MERCEDES C User Manual

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Page 1

Fault Code Manual

for

Mercedes-Benz

Analog Systems 1988-1997

Digital Systems 1993-2000

©Baum Tools Unlimited Inc. February 1, 2001

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Table of Contents

The Diagnostic Process

Information Gathering .................................................................... 4

Diagnostic Codes & Adaptation

Diagnostic Code Readout ................................................................. 6

About Stored, Registered and Current Faults ................................................... 6

Fault Code Types ....................................................................... 7

Check Engine Light (MIL) Diagnosis ......................................................... 7

Mixture Adaptation ....................................................................... 8

Resetting and Reactivating BOSCH Engine Control Module Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Using the Data Stream.................................................................... 9

Equipment Connections

Connection Table....................................................................... 10

Connector Layout of Vehicle Diagnostic Connector ............................................. 11

8-pole Diagnostic Connector ......................................................... 11

16-pole Diagnostic Connector......................................................... 11

38-pin Diagnostic Connector ......................................................... 12

9-pole Diagnostic Connector (1980-94) ................................................. 13

Mercedes Model Identifier ............................................................... 100

Fault Codes

Engine Control

Electronic Diesel Idle Speed Control (ELR) .................................................... 14

Electronic Diesel System (EDS) ............................................................. 14

Continuous Fuel Injection System (CFI) ....................................................... 15

Continuous Fuel Injection System (MAS Controller) .............................................. 16

LH Sequential Multiport Fuel Injection System - Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

LH Sequential Multiport Fuel Injection System - Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

HFM Sequential Multiport Fuel Injection System - Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

HFM Sequential Multiport Fuel Injection System - Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

PMS (PEC) Fuel Injection System .......................................................... 25

ME Sequential Multiport Fuel Injection System ................................................. 26

Diagnostic Module (DM) - Analog ........................................................... 41

Diagnostic Module (DM) - Digital LH (104, 119, 120) ............................................. 43

Diagnostic Module (DM) - Digital HFM (104, 111) ............................................... 45

Base Module (BM) - LH-SFI ............................................................... 47

Distributor Ignition (DI) - LH-SFI ............................................................ 48

Cruise Control/idle Speed Control (CC/ISC) w/o ASR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Electronic Accelerator / Cruise Control / Idle Speed Control (EA/CC/ISC) w/ASR . . . . . . . . . . . . . . . . . . . . . . . 50

Chassis Control

Electronic Automatic Transmission Control (ETC) CFI (722.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Electronic Automatic Transmission Control (ETC) 1990-95 (722.5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Automatic-engaged Four-wheel Drive (4MATIC) ................................................ 52

Electronic Automatic Transmission Control (ETC) 1996-2000 (722.6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Adaptive Damping System (ADS) ........................................................... 54

Automatic Locking Differential (ASD) ......................................................... 55

Anti-lock Brake System (ABS) .............................................................. 55

Anti-lock Brake system (ABS w/ASR) ........................................................ 56

Electronic Traction Systems (ASR, ETS) ...................................................... 57

Speed Sensitive Power Steering (SPS) ....................................................... 58

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Electronic Traction Systems (ABS, ASR, ETS, SPS) Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Body Control

Cabriolet Soft Top (CST) ................................................................. 61

Roll Bar (RB) for CST .................................................................... 61

Roadster Soft Top (RST) ................................................................62, 63

Roll Bar (RB) for RST .................................................................... 63

Infrared Remote Control For Central Locking (IRCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64, 65

Pneumatic Systems Equipment (PSE) ........................................................ 65

Anti-theft Alarm System( ATA) .............................................................. 66

Cellular Telephone (CT)................................................................... 66

Convenience Features (CF)................................................................ 67

Supplemental Restraint System (SRS) ....................................................... 68

Supplemental Restraint System (SRS) BAE, ZAE System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Supplemental Restraint System (SRS) with Side Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Body Control Systems (SRS, IRCL, PSE, ATA. RST, MSC, CF) Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Climate Control

Tempmatic A/C ......................................................................... 73

Automatic A/C .......................................................................... 74

A/C SELF DIAGNOSTIC SYSTEMS

TAU 2.1........................................................................... 75

129 Chassis 1990-95................................................................. 77

129 Chassis 1996-99................................................................. 79

140 Chassis 1992-95................................................................. 81

140 Chassis 1996-99................................................................. 86

202 Chassis 1995 ................................................................... 89

202 Chassis 1996-99................................................................. 93

210 Chassis 1996-99................................................................. 94

Mercedes Technical Acronyms ........................................................... 97

Mercedes Model Identifier ............................................................... 100

Mercedes Diagnostic Manuals .......................................................... 106

Technical Support Contact Information ................................................. 107

DISCLAIMER: All information contained in this document is correct to the best of our knowledge. Errors may occur

therefore Baum Tools Unlimited Inc. makes no warrantee, guarantee or assurance that damage may not occur from the use of this information. The user takes all responsibility for its use.

Mercedes Benz is a registered trademark of Daimler Chrysler AG.

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This book is designed to help you in the basic diagnostic procedures for Mercedes Benz. It is intended to be a starting point in the diagnostic process and is not intended to be a complete resource.

THE DIAGNOSTIC PROCESS

The diagnostic process divides itself into several levels; Information Gathering, Analysis of Codes, Testing and then Repair. We will cover Information Gathering and Analysis of codes in this book.

For those experienced in diagnostics jump to page

INFORMATION GATHERING

The information gathering stage always starts with the Customer.

Step 1 The Customer Interview

This is truly an art. It consists of getting the Customer to tell you what the complaint is and under what conditions it occurs. The customer of course is, as always, the “MOST HELPFUL” source of information. Their concise insight into the problem is a valuable step in getting the problem solved and the car back on the road. Also it’s the most fun part of the diagnostic process. Watching the customer use body gestures, make funny faces and funny sounds in an attempt to imitate vehicle noises can really brighten your day. Actually the process of getting the information out of the customer can be relatively painless if you ask the correct questions.

Here are some suggestions:

1) What is the problem/symptom(s)?

2) When did it start?

3) Under what conditions did the problem/symptom occur (if intermittent)? Wet, dry, hot, cold or changing weather, rough road,...etc.

4) Has there been any work done on the car recently? New radio, shocks, tires...etc?

5) Any jump starts or hard starts with long crank times.

6) Did you run out of gas recently?

7) Are you sure this hasn’t happened before, even for a short time?

Next the exact nature of the complaint must be addressed.

Step 2 The Test Drive

Go on a test drive with the Customer so you can/cannot experience the problem/symptom. This ensures that the malfunction you try to diagnose and fix is the one with that the customer is concerned about and that it is a real malfunction and not just a lack of understanding of normal vehicle operation.

Few things are more frustrating for you and the customer than repairing a suspension noise in the front of the car (even if it did need new shocks, thrust bushings, brakes and a set of tires) when it was an engine noise that the customer wanted fixed.

It is also a good idea to let the customer drive on the outbound leg so you can watch the customers driving technique. The customer is more likely to be able to make the car “do it” then you will.

Sometimes a customer can mistake normal vehicle operation for a problem. An example of this is a customer whose vehicle has an Anti-Lock Brake System (ABS), and is concerned because of a pulsating brake pedal when braking hard. Since many people are unaware of this characteristic of normal ABS operation, they mistake this for a malfunction.

Also if you start diagnosing a vehicle for a problem when the vehicle is operating normally, you can be in for a long frustrating day.

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Step 3 Visually Inspect the Vehicle

Don’t leave out this step. You can save lots of time with this.

Engine - Look under the hood. Check for missing covers, oil and water splash, burn marks, nesting

materials, mis-routed wiring and anything else that looks out of place.

ABS/ASC/DSC/ASR - Lift hood and inspect the fluid level. Raise the car and inspect the brakes/wheels for excess dust and corrosion. Check that all static charge grounding straps are in place.

Transmission - Look for beverage spillage on the center console area. Look for problems in the operation of the instrument cluster and on-board computer. These systems share data with the engine, transmission and traction systems. Inspect the transmission housing and connection cables.

SRS/Airbag - Has the car been in a collision, jumped a curb, been to the body shop (welded) or jump started.

Any or all of these can be signs of something amiss.

Remember you’re gathering information at this point so don;’t ignore anything at this step.

Step 4 Check the Battery

Visually inspect the battery for corroded cables and terminals. Also old batteries are pure trouble in a late model car.

If you see any problem clean it up and grab your DMM (Fluke 88, Vantage, or whatever volt meter you use) and ...

Check voltage Key Off Engine Off, KOEO and KOER.

Key Off Engine Off >11.4Volts KOEO >11.4Volts KOER >13.2 but not higher than 14.2volts

Step 5 Recall Fault Codes

Even without a “Check this or that Light” illuminated, pull the codes from all systems, not just the suspect system.

Late model cars have highly integrated controls and faults can cascade from one system to another. Simple things like and wrong size tire can turn on the Transmission Failure message, yet not turn on the ABS or ASR light. Both systems, though, may register codes.

Record and then Clear the codes. Write them down. Write them down. W rite them down.

There is nothing more fun then the call to tech support that starts. Technician: “I got this code. Something about the O2 sensor. I replaced it but the code came back the next day.

Why?” Tech Support: “What is the type and year of the car and what was the fault code number?” Technician: “It was a ‘94 C220, but I don’t remember the code number. It came in last week.” Tech Support: (Knocking back another bottle of Mallox) “Could it have been a Lambda Control code?” Technician: “Ya! I think that was it. Why’d the new plugs make it go away and not the new O2 sensor?”

Test drive the car then pull the codes again. For some codes you will need to perform 2 test drives to get a code.

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Diagnostic Codes & Adaptation

Diagnostic Trouble Code (DTC) Readout:

The engine control module (N3/4) for the LH-SFI, HFM-SFI and ME-S FI sys tems are equipped with diagnostic trouble code (DTC) memory. Malfunctions are recognized and stored as trouble codes and are distinguished as follows:

u Malfunctions which are constantly present, u Malfunctions which occur longer than a pre determined number of seconds, u Intermittent contact malfunctions which have occurred 5x during a trip.

The DTC memory remains active even if the vehicle's battery is disconnected.

Malfunctions which are no longer present, are automatically erased again after a maximum of 19 trips.

Under HFM-SFI a TRIP has occurred if:

u Engine running more than 5 minutes u Vehicle speed >4 km/h (2.5 mph), u Engine speed >700 rpm, u Engine shut off for 30 seconds.

Under ME-SFI a TRIP is

u Engine running for more than 20 minutes, u Engine temperature is greater than -7 degrees C, u Engine speed is greater than 500 RPM,

The stored diagnostic trouble codes (DTCs) can be read at the 16 (124 E-class) or 38 pin data link connector (X11/4) with the ignition switched "ON" or with the "engine running".

Diagnosis via an on-off ratio readout has been eliminated in all models.

About Stored, Registered and Current Faults

Stored or Permanent Faults - These faults generally turn on the MIL (malfunction indicator lamp previously known as

the Check Engine Light) and are recorded in the permanent memory of the cars system controller. Clearing these codes most often will extinguish the MIL. (See Registered Faults below.)

Registered or Pending Faults - These faults can keep the MIL on. These faults are recorded in the temporary memory of the of the cars system controller. This temporary memory records the number of times a component fails. When a certain number of failures has occurred the fault is moved to permanent storage and the Check Engine Light (MIL) will be illuminated. On cars equipped with Fault Registers the Check Engine Light may stay on after the Stored or Permanent Fault has been erased if another occurrence of the fault has happened since the original Permanent Fault was stored. To ensure the MIL is extinguished, erase the Stored and Registered faults.

Current or Actual Faults - These faults are detected while the car is running at idle or speed. They represent components currently failing or, in the case of HFM and LH systems, components not present. These codes cannot be erased, and are only meaningful with the ignition on and the engine running. Codes found in this system with the KOEO have no meaning. Components not present on the vehicle may be flagged as failing by the cars internal diagnostics due to the generic nature of the cars software. This is particularly true in C-Class (202) cars.

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Fault Code Types

There are basically 2 code types. Component failure codes and System Malfunction or Logic codes.

Component Failure Codes are just that. The ECU specifically targets a “component” as failing. These codes make it easy to spot the problem.

Some of these components are:

Oxygen Sensor MAP MAF TPS Vehicle Speed Sensor Coolant Temperature Sensor Intake Air Temperature Sensor Camshaft Position Sensor Crankshaft Position Sensor Exhaust Temperature Sensor Injectors Ignition (coils) Idle Air Valve Pressure Regulator (optional) EGR Valve EVAP Purge Valve Secondary Air Valve Secondary Air Pump...etc.

System Failure or Logic Codes indicate that, when the “system” operated it did not produce the desire result. Examples of these codes are;

Fuel Trim, O2 Control at Limit (Lambda control)

Possible cause: Fuel tank ran empty, Incorrect Fuel Pressure, Injector valve defective or coked, Engine Temperature Sensor defective, EGR valve leak, Secondary air leak, EVAP control system defective, Air Mass Meter defective, O2 sensor aging (slow response) or inactive, Combustion disturbed by mechanical failure (Spark plugs, compression, intake/exhaust valves, ...etc.)

Ignition Feedback Fault

Possible cause: Coils, Sparkplug Wires, Sparkplugs, ECU, Low or high battery voltage.

ASR CAN Signal to Another Controller Lost.

Possible cause: ABS/ASR Control Unit Fault, ABS/ASR Component Fault, CAN Bus Communications Fault, Faulty Electronic Accelerator (EA) controller, Faulty EA Actuator, Low or high battery voltage.

Electronic Accelerator Fuel Cutoff Signal to Engine Control

Possible cause: Faulty EA Actuator System, Faulty EA Actuator, Low or high battery voltage

ECU Faults

Internal Control M odule, internal communication fault Internal Control Module, Keep Alive Memory (CMOS) Internal Control Module, Memory check sum (ROM/RAM) Internal Control Module, RAM Internal Control Module, EEPROM.

Load Calculation Cross Check, Range/Perf....etc.

These types of codes are more difficult to diagnose, but generally there will be other conditions that can give you a clue. Other fault codes will be present, physical engine condition (wear and tear), nature of the complaint itself, and information from the datastream can help refine your analysis.

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Check Engine Light (MIL) Diagnosis

Mercedes S(140), SL(129), E(124, 210) and C(202) class have multiple systems which can turn on an Check Engine Light. All related systems must be tested for codes and repaired before the light will extinguish.

Injection System Diagnostic Socket Pin and CS1000 System to Use

129 LH

(1992-95)

140 LH

(1992-95)

124 HFM

(1993-95)

140 HFM

(1993-96)

202 HFM

(1995-96)

210 HFM

(1996-97)

LH (pin 4 & 5), EA/CC/ISC (pin 7), BM (pin 8), DI (pin 17 & 18) and DM (pin 19 check stored and registered codes only)

LH (pin 4), EA/CC/ISC (pin 7), BM (pin 8), DI (pin 17) and DM (pin 19 check stored and registered codes only)

HFM (pin 8), EA/CC/ISC (pin 14), and DM (pin 3 check stored and registered codes only)

HFM (pin 4), EA/CC/ISC (pin 7) and DM (pin 19 check stored and registered codes only)

HFM (pin 4), EA/CC/ISC (pin 7) (except C220) and DM (pin 19 check stored and registered codes only)

HFM (pin 4), EA/CC/ISC (pin 7) and DM (pin 19 check stored and registered codes only)

Note: ME-SFI injected vehicles integrate Injection, Ignition, Electronic Accelerator, Diagnostic Module and Base module into the ME controller module.

Mixture Adaptation:

The Lambda control system precisely determines fuel injection duration so that the fuel/air ratio is consistently kept at Lambda equal 1 (Lambda=1 is 14.7 kg air per 1 kg fuel) under all operating conditions.

Should a malfunction occur in the form of:

u Intake air leaks u Injector defects or carbon build-up, u Air Flow Sensor defects u Pressure regulator defects, such as a blown diaphragm. u Fuel tank purge control valve defects or EVAP system leaks.] u EGR defects u Vacuum leaks of any kind. u Mechanical engine wear, such as, chipped valves or leaking rings.

The engine control module automatically performs a mixture adjustment. The degree of correction is calculated constantly and stored in KAM (Keep Alive Memory) RAM. The self-adaptation is performed at idle and under partial load. Maximum correction towards rich or lean is 25%. After repair work is performed, the engine control module will automatically adapt itself again after approx. 10 trips. After eliminating a malfunction or after trial installation of an engine control module from another vehicle, the self-adaptation feature must be reset to its mean value.

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"Resetting and Reactivating for BOSCH Engine Control Module Memory"

For LH & HFM systems only.

To reset and reactivate the module :

1. Read and clear all fault codes

2. After display of 1 (No faults present) short the diagnostic plug (pin 8 for 16 pin diagnostic socket, pin 4 for 38 pin diagnostic socket) to ground for 6 to 8 seconds

3. Switch ignition off and wait at least 5 seconds

4. Turn ignition on, wait minimum of 10 seconds then restart engine.

Long Term Adaptation (Additive) - Engine at idle. Short Term Adaptation (Multiplicative) - Engine at partial load

The correction towards rich or lean is + - 1.0 msec (Injection Duration) at idle and the factor of 0.68-1.32 at partial load. After repair work is performed the engine control will automatically adapt itself again (ME injection) over the course of 10

TRIPS.

Codes Present in the Absent of Trouble Light

Not all control systems will trigger codes or turn on malfunction lights when codes are stored.

INJECTION/IGNITION system problems will trigger trouble codes, but may not turn on the MIL unless the fault results in a change in the exhaust gases or can damage the engine in the short term. Also some mechanical problems in earlier cars (pre 1988-96) can cause poor drivability without ever tripping a code or turning on the light. On later models that is much less likely.

BRAKING/TRACTION systems will only turn on their check light when the system has become inactive. It does not mean there isn’t a problem and codes haven’t been stored.

TRANSMISSION systems will turn on the “Check Engine” light if any shared system is detected as failing test.

AIRBAG and RESTRAINT SYSTEMS will turn on the light and record codes if incorrectly coded for the car. A good

example is the 1995 C280 and the 1995 S320. The same controller is used in both vehicles, however the S-class has more features in the Airbag system such as side bags and baby seat detection. The coding of the controller for the C280 masks the features not present so the controller doesn’t register a code. The controllers generally come off the parts dept. shelf coded for maximum features.

In All Systems low or high battery voltages can trigger invalid or multiple codes without real failures of the indicated components. Always check the battery condition before starting analysis.

Using the Data Stream to Diagnose/Confirm Faults

The Serial Data Information Stream of the ECU is a “window” into the operation of the system under test. By looking at the values of the suspect components in operation and the computed values of the ECU, we can build a picture of the operation of the system and what is causing the fault. The interpretation of the Data Stream is beyond the scope of this book. Please refer to the Diagnostic Manuals from Mercedes Benz for complete discussion of the topic.

The nominal values for all Mercedes vehicles 1990-2000 can be found in the Mercedes Engine Diagnostic Manual Volume 1 Section A.

A listing of these manuals can be found at the end of this document.

Multiple system and component faults can almost always be traced to faulty wiring harnesses or water damage.

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Connection Table

Test Lead of Cable Connection source

Red Power -To power supply socket or vehicle battery

Black Ground - To socket 1

Yellow To diagnostic test socket

Power supply (B+) socket on the vehicle Diagnostic Connectors

8-pole connector Use with the battery extension cable to the vehicle battery

16-pole connector Socket 16 (circuit 15 - ignition ON)*

Not present in some models. Use battery +.

38-pole connector Socket 3 (circuit 30 - Battery+)

*Must be performed with the ignition ON to power up the scanner

Ground (-) socket on the vehicle Diagnostic Connectors

8-pole connector socket 1 16-pole connector socket 1 38-pole connector socket 1

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Connector Layout of Vehicle Diagnostic Connector

8-pole Diagnostic Connector

Models 201, 124, 126

1 Ground 2 Not used 3 CIS-E Continuous fuel injection system (CFI) 4 ELR

EDS

5 ASD

4MATIC 6 SRS Supplemental Restraint System 7 A/C Air Conditioning 8 Not used

Diesel injection system - Electronic idle speed control system Electronic diesel system

Automatic locking differential Automatic-engaged four wheel drive (124 only)

16-pole Diagnostic Connector

Models 124, 129

1 Ground 2 OBD Push-button for On Board Diagnostic (California only) 3 CIS-E

DM 4 EDS Electronic diesel system 5 ASD

4MATIC 6 SRS / AB Supplemental Restraint System / Air Bag 7 A/C

RB 8DI

HFM-SFI

PEC 9 ADS

10 RST Roadster Soft Top (Model 129)

11 ATA Anti Theft Alarm system 12 IRCL Infrared Remote Central Locking 13 ETC Electronic automatic Transmission Control 14 EA

CC / ISC

ESCM

Continuous Fuel injection system (CFI) Diagnostic Module - LED (California only)

Automatic locking differential Automatic-engaged four wheel drive

Air Conditioning (Model 124) Roll Bar (Model 129) Distributor ignition HFM Sequential multi-port Fuel Injection/Ignition system Pressurized engine control Adaptive Damping System Roll Bar (Model 124)

TN-signal (Gasoline)

Electronic Accelerator (Model 124) Cruise Control / Idle Speed Control (Model 124) Engine System Control Module (MAS), (Model 129)

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15 Not used 16 Voltage, Ignition ON (Circuit 15) (Not equipped on all models.)

38-Pin Diagnostic Connector

Models 124.034/036, 129.058/063/067/076, 140, 170, 202, 208, 210, 215, 220

The Mercedes Diagnostic “Mushroom” #140-1463 available from Baum Tools Unltd. is recommended to allow easy access to the

diagnostic connector. Call 800-848-6657 or 941-927-1414 for more information.

Pin System Description

1 Ground (Terminal 31) W12 (Chassis Ground), W15 (Electronics Ground) 2 Voltage, terminal 87 Ignition Switch 12volts + 3 Voltage, terminal 30 Battery 12volts + 4 EDS Electronic Diesel System

IFI In-line Fuel Injection DFI Electronic Distributor-type Fuel Injection (Diesel) HFM-SFI Hot-Film Engine Management Sequential Multiport Fuel Injection/ignition LH-SFI LH Sequential Multiport Fuel Injection System

Engines 104, 119 Engine 120 Right Bank

ME-SFI Motor Electronics with Sequential Multiport Fuel Injection/ignition System

Engine 119 Engine 120, Right Bank

5 LH-SFI LH Sequential Multiport Fuel Injection, Engine 120 Left Bank

ME-SFI Motor Electronics with Sequential Multiport Fuel Injection/ignition System

Engine 120 Left Bank

6 ABS Anti-lock Brake System

ETS Electronic Traction System ASR Acceleration Slip Regulation ESP Electronic Stability Program

7 EA Electronic Accelerator+

ISC Idle Speed Control CC Cruise Control/idle Speed Control

8 BM Base Module

BAS Brake Assist

9 ASD Automatic Locking Differential, Models 124, 129, 140

10 EATC Electronic Automatic Transmission Control (5-speed AT) (722.6)

ETC Electronic Transmission Control (722.6) 11 ADS Adaptive Damping System 12 SPS Speed-sensitive Power Steering 13 TD Speed Signal (Time Division) (Di) (Diesel) Models 202, 210

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TNA Signal (Gasoline) on LH-SFI

TN Speed Signal (DI/KSS) (Gasoline) on HFM-SFI, ME-SFI 14 Lambda on/off ratio LH-SFI Engine 119,

LH-SFI Engine 120 LH-SFI, Right Bank

15 Lambda on/off ratio LH-SFI Engine 120 Left Bank

IC Instrument Cluster

16 HEAT Automatic Heater

TA/C Air Conditioning (Tempmatic)

AA/C Air Conditioning (Automatic) 17 DI Distributor Ignition, Engines 104, 119, Engine 120, Right

TD Speed Signal (Time Division) (Di) (Diesel) Model 140

TN Speed Signal (DI/KSS) (Gasoline) on LH-SFI / model 202 HFM-SFI 18 DI Distributor Ignition, Engine 120, Left 19 DM Diagnostic Module 20 PSE Pneumatic System Equipment, Model 140

MFCM Multi-function Control Module, Model 210 21 CF Convenience Feature, Model 140

RST Roadster Soft Top, Model 129 22 RB Roll Bar, Model 129 23 ATA Anti-theft Alarm

24-25 -

26 ASD Automatic Locking Differential, Model 202 27 28 PTS Parktronic System, Model 140 29 30 AB Airbag/emergency Tensioning Retractor 31 RCL Remote Central Locking

32-33 -

34 CNS Communication and Navigation System 35 36 STH Stationary Heater 36 ZUH Heater Booster

37-38 -

The following connector is not for use with the CS1000 or CS2000 scanners

9-Pole Diagnostic Connector (1980-94)

The 9-pole Diagnostic Connector is used on earlier model vehicles. It can display on-off ratio fault codes (1986-1992), RPM and Lambda sensor values. Various on-off ratio Meters are available that provide access to this type of diagnostic connector. Call Baum Tools at 800-848-6657 or 941-927-1414 for more information on these meters.

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ELECTRONIC IDLE SPEED CONTROL (ELR)

Model Model Year

201.126 1989

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Speed sensor signal 3 Coolant temperature sensor signal 4 ELR control unit or Idle speed control (ISC) system

ELECTRONIC DIESEL SYSTEM (EDS)

Model Model Year

124.128 1990-93

126.134 126.135 1990-91

140.134 1992-93

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Fuel rack position sensor (L7) 3 Air flow sensor signal (B2/1) 4 Electronic diesel system (EDS) control unit (N39) or atmospheric pressure sensor 5 Exhaust gas recirculation (EGR) valve vacuum transducer (Y31/1) or fault in exhaust gas recirculation

(EGR) control circuit

6 Electronic diesel system (EDS) control unit (N39), internal voltage supply 7 Starter ring gear speed sensor (L3) 8 Engine coolant temperature sensor (B11/4)

9 Intake air temperature sensor (B2/1a) 10 Voltage supply insufficient 11 Electronic idle speed control actuator (Y22) or exhaust gas recirculation (EGR) valve vacuum transducer

(Y31/1) or Boost pressure cut-out switchover valve 12 Not used 13 Electronic diesel system control unit (N39), faulty (internal fault memory) 14 Electronic diesel system pressure sensor (B5/1), defective 15 Boost pressure control/ pressure control flap vacuum transducer (Y31/5) , or defect in Boost pressure

control circuit.

Intake manifold air pressure control valve vacuum transducer (Y31/2), wastage vacuum transducer

(Y31/3), or malfunction Intake manifold air pressure circuit

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CONTINUOUS FUEL INJECTION SYSTEM (CFI)

Models Model Years

107.048 1988-91 (California version only)

124.026 124.030 124.050 124.090 1988-89 (California version only)

126.024 126.025 1988-89 (California version only)

126.035 126.039 126.045 1988-91 (California version only)

201.028 (1988-93) 201.029 1988-89 (California version only)

124.026 124.030 124.051 124.090 124.230 124.290 1990-93

126.024 126.025 1990-93

129.061 129.066 1990-92

201.029 1990-93

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Throttle position switch - wide open throttle (WOT), signal faulty 3 Engine coolant temperature sensor faulty 4 Air flow sensor position potentiometer voltage illogical 5 Oxygen sensor signal illogical 6 Not used 7 TNA/TD signal (RPM) read by CFI control module 8 Altitude pressure signal from ignition control module illogical

9 Electronic hydraulic actuator (EHA) current faulty. 10 Throttle position switch - closed throttle position fault (idle) 11 Air injection system, open or short circuit 12 Absolute pressure values from EZL ignition control module are illogical

or Exhaust gas recirculation temperature sensor

13 Intake air temperature reading is illogical 14 Vehicle speed signal read by CFI control module is illogical

15 Not used 16 Exhaust gas recirculation switchover valve, open or short circuit 17 Oxygen sensor is shorted to positive or ground 18 Current to idle control valve is illogical 19 Not used 20 Not used 21 Not used 22 Oxygen sensor heater voltage illogical 23 Short circuit to positive in purge switchover valve circuit 24 Not used 25 Short circuit to positive in start valve circuit 26 Short circuit to positive in upshift delay solenoid valve circuit 27 Data exchange between CFI control module and ignition control module interrupted 28 Intermittent contact in engine coolant temperature sensor circuit

29 CFI and ignition control module reading different engine coolant temperatures - Faulty sensor or wires 30 Not used 31 Intermittent contact in engine coolant temperature sensor circuit 32 Not used 33 Not used 34 Engine coolant temperature read from ignition control module illogical

Page 16

Continuous Fuel Injection System (MAS Controller)

Models Model Years

124.026 124.030 124.090 124.230 124.290 129.066 201.029 1990-92

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Fuel pump relay (circuit 87) not functioning 3 TN/TD signal (RPM) interrupted 4 Output for oxygen sensor heater control defective 5 Output for air injection pump control defective 6 Output for kickdown switch control defective 7 Not used 8 Engine coolant temperature sensor signal out of range

9 Circuit 50 failure 10 Output failure of the start valve 11 A/C compressor engagement signal missing (87Z) 12 Output for A/C compressor control defective 13 Excessive A/C compressor clutch slippage 14 Vehicle speed signal illogical 15 Short circuit detected in fuel primp circuit

Page 17

LH Sequential Multiport Fuel Injection - Analog

Models Model Years

140.032 140.057 140.076 1992-93

124.034 124.036 1992-93

129.067 1992-93

140.042 140.043 140.051 1992-93

See digital LH injection page 18 for models 3/93 and later.

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found

2 Engine coolant temperature sensor circuit 1, open or short circuit.

3 Engine coolant temperature sensor circuit 2, open or short circuit.

4 Voltage at mass air sensor (MAF) with hot wire circuit insufficient or too high. Open or short circuit in

ground wire. 5 Not used 6 Not used 7 TNA-signal (rpm signal ) incorrect or open or short circuit. 8 Camshaft position sensor signal. Open or short circuit. 9 Starter signal (circuit 50) missing, open or short circuit.

10 Closed throttle position recognition from electronic accelerator control unit, short circuit. 11 Secondary air injection system, open or short circuit. 12 Burn-off control for mass air sensor with hot-wire, open or short circuit. 13 Intake air temperature sensor, open or short circuit. 14 Not used 15 Not used 16 Exhaust gas recirculation (EGR) switchover valve, open or short circuit. 17 CAN data: Electronic accelerator control module - no data transmission 18 CAN data: Ignition control module - no data transmission from DI module 19 Left LH-SFI control module no data transmission to right LH-SFI control module 20 LH-SFI control module - no data transmission 21 Oxygen sensor open circuit. 22 Oxygen sensor heater, open or short circuit. 23 Purge switchover valve, open or short circuit. 24 Left adjustable camshaft timing solenoid (Y49/1), open or short circuit 25 Adjustable camshaft timing solenoid, open or short circuit. 27 Injectors, open or short circuit. 29 I GR Start relay module (K29/1), open or short circuit

Page 18

LH Sequential Multiport Fuel Injection - Digital

Engines Model Years

104 119 120 1992-1995

Also check for codes in the Diagnostic Module (DM page 43), Electronic Accelerator/Cruise Control (EA/CC/ISC pages 50 and 49), Distributor Ignition (DI page 48) and the Base Module (BM page 47). (These fault codes numbers are only for the CS1000 Code Scanner. They are different from those found in the Mercedes Benz original Diagnostic Manual fault code tables.)

LH-SFI “Stored” Fault Codes

DTC Readout Possible Cause of Failure

002 Engine coolant temperature sensor circuit 1, short or open circuit 003 Engine coolant temperature sensor circuit 2, short or open circuit 004 Voltage of Hot Wire MAF sensor too low or too high or ground wire has open circuit. 005 Not used. 006 Japan only Exhaust temperature sensor, circuit short or open 007 TNA-signal (rpm signal ) incorrect or open or short circuit. 008 Camshaft position sensor signal. Open or short circuit. 009 Starter signal (circuit 50) missing, open or short circuit. 010 Closed throttle position recognition from electronic accelerator control unit, short circuit. 011 Secondary air injection system, open or short circuit. 012 Burn-off control for mass air sensor with hot-wire, open or short circuit. 013 Intake air temperature sensor, open or short circuit. 014 Not used. 015 Not used. 016 EGR switchover valve, circuit open or short 017 CAN data: Electronic accelerator control module - no data transmission 018 CAN data: Ignition control module - no data transmission from DI module 019 Left LH-SFI control module no data transmission to right LH-SFI control module 020 LH-SFI control module - no data transmission (Left or Right) 021 Oxygen sensor open circuit. 022 Oxygen sensor heater, open or short circuit. 023 Purge switchover valve, open or short circuit. 024 Left adjustable camshaft timing solenoid (Y49/1), open or short circuit (119 only) 025 Adjustable camshaft timing solenoid, open or short circuit. 026 Upshift Delay Switchover Valve, open or short circuit 027 Injectors, open or short circuit. 028 LH Control Module incorrectly coded or open circuit. 029 1GR Start relay module (K29/1), open or short circuit

These codes require special scanners to access.

LH-SFI “Current” Fault Codes

DTC Readout Possible Cause of Failure

001 Injector, cylinder 1 circuit short to positive 002 Injector, cylinder 5 circuit short to positive 003 Injector, cylinder 4 circuit short to positive 004 Injector, cylinder 8 circuit short to positive 005 Injector, cylinder 6 circuit short to positive 006 Injector, cylinder 3 circuit short to positive 007 Injector, cylinder 7 circuit short to positive 008 Injector, cylinder 2 circuit short to positive 009 Injector, cylinder 1 open circuit or short to ground 010 Injector, cylinder 5 open circuit or short to ground 011 Injector, cylinder 4 open circuit or short to ground

Page 19

DTC Readout Possible Cause of Failure

012 Injector, cylinder 8 open circuit or short to ground 013 Injector, cylinder 6 open circuit or short to ground 014 Injector, cylinder 3 open circuit or short to ground 015 Injector, cylinder 7 open circuit or short to ground 016 Injector, cylinder 2 open circuit or short to ground 017 HFM sensor Voltage too high or too low, may open circuit 018 Engine coolant temperature sensor short or open circuit 019 Engine coolant temperature sensor short or open circuit 020 Engine coolant temperature sensor signal questionable 021 Intake air temperature sensor short or open circuit 022 Exhaust temperature sensor short or open circuit (Japan version only) 023 CO potentiometer open circuit (non KAT) 024 LH-SFI control unit coding plug open circuit (not USA version) 025 Starter signal missing (circuit 50), may short or open circuit 026 Idle speed recognition from Cruise control/Electronic accelerator (CC/EA), circuit short to ground 027 Not used 028 O2S 1 signal, short or open circuit

029-030 Not used

031 O2S 2 signal, short or open circuit 032 Not used 033 CAN communication problem, No communication from LH control unit 034 CAN communication problem, No communication from ASR control unit 035 CAN communication problem, No communication from LH control unit 036 CAN communication problem, No communication from LH control unit 037 CAN communication problem, No communication from EZL/AKR ignition control unit 038 CAN communication problem, No communication from EZL/AKR ignition control unit 038 CAN communication problem, No communication from Cruise control/Electronic accelerator 040 Not used 041 Air injection system short or open circuit 042 Fuel purge switchover valve open or short circuit 043 Transmission switchover valve, circuit open or short 044 EGR switchover valve, circuit open or short 045 Camshaft timing adjust solenoid, circuit open or short 046 Camshaft timing adjust solenoid, circuit open or short 047 First gear start relay, circuit open or short 048 Not used 049 Air injection system circuit short or open 050 Fuel purge switchover valve circuit short or open 051 Transmission switchover valve relay or solenoid, circuit short or open 052 EGR switchover valve circuit short or open 053 camshaft timing Adjust solenoid circuit short or open 054 camshaft timing Adjust solenoid circuit short or open 055 First gear start relay circuit short or open 056 Not used

Page 20

HFM Sequential Multiport Fuel Injection - Analog

Engines Model Year

104 111 1993

See digital HFM injection section page 22 for models 3/93 and later.

Also check for codes in the Diagnostic Module (DM page 41 and 43) and the Electronic Accelerator/Cruise Control (EA/CC/ISC pages 50 and 49).

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Engine Coolant temperature sensor 3 Intake air temperature sensor 4 Hot film mass air flow sensor 5 CTP switch

6-7 Not used

8 Idle speed control (ISC) system at upper or lower control stop or CC or EA indicates "limp home" mode.

9 O2S 1 (before TWC) - voltage too high, circuit open or voltage implausible 10 O2S 2 (after TWC)voltage too high, circuit open or voltage implausible 11 O2S 1 heater (before TWC) - Current too high/low or short circuit. 12 O2S 2 heater (after TWC) - Current too high/low or short circuit. 13 O2S (Lambda) control system operating at rich or lean limit 14 Injector, cylinder 1 15 Injector, cylinder 2 16 Injector, cylinder 3 17 Injector, cylinder 4 18 Injector, cylinder 5 19 Injector, cylinder 6 20 Self-adaptation at idle speed or upper/lower partial load at rich or lean limit 21 Ignition output 3 or ignition coil for cylinder 1 and 6 22 Ignition output 1 or ignition coil for cylinder 2 and 5 (Engine 111, cylinder 1 and 4) 23 Ignition output 2 or ignition coil for cylinder 3 and 4 (Engine 111, cylinder 2 and 3) 24 CKP sensor or magnet for position sensor not recognized 25 CMP sensor not recognized or implausible 26 Not used 27 TN-signal (rpm signal ) - open or short to ground 28 VSS - open circuit 29 Not used 30 Fuel pump relay module - open or short circuit 31 Not used 32 Knock sensors 1 and /or 2 33 Maximum retard setting on at least one cylinder has been reached or the ignition angle deviation between the

individual cylinders is greater than 6 degrees crankshaft angle

34 Knock control-output switch in engine control module faulty Momentary fault in self-adaptation closed throttle

speed/partial load

35 Model 124,129 and 140 AIR pump switchover valve and/or electromagnetic AIR pump clutch.

Model 202 AIR pump switchover valve and/or AIR relay module 36 Purge control valve - open/short to ground or B+ 37 Transmission Upshift delay switchover valve (Y3/3) without function (Logic Chain) - Check vacuum and

adjust Bowden cable. 38 Adjustable camshaft timing solenoid - open/short to ground or B+ 39 Exhaust gas recirculation switchover valve - open/short to ground or B+ 40 Transmission overload protection switch - open/short to ground or B+ or open or closed or implausible 41 CAN communication from engine control module faulty

Page 21

DTC Readout Possible Cause of Failure

42 CAN communication from ASR, EA/CC/ISC module or diagnostic module (OBD II) faulty 43 Starter signal (circuit 50) not present 44 Not used 45 Fuel safety shut-off of electronic accelerator or cruise control active 46 Resonance intake manifold switchover valve - open/short to ground or B+ 48 O2S 2 (after TWC) heating circuit relay module - open/short to ground or B+ 49 Voltage supply at engine control module implausible/low volts. 50 Engine control module faulty or not coded.

Page 22

HFM Sequential Multiport Fuel Injection - Digital

Engines Model Years

111 (4 cylinder, 2.2/2.3L engine) 1994-97 104 (6 cylinder, 2.8/3.2L engine) 1994-97

Also check for codes in the Diagnostic Module (DM page 43) and the Electronic Accelerator/Cruise Control (EA/CC/ISC pages 50 and 49).

HFM-SFI Stored Fault Codes

Only Stored Fault Codes illuminate the Check Engine Light. (Code Scanner will display the fault code numbers listed under OB15, Mercedes factory numbers are listed under MB for referral to factory literature.)

OB15 MB Description

0 No Fault Found 1 (002) Engine Coolant Temperature Sensor - Short Circuit 2 (003) Engine Coolant Temperature Sensor - Open Circuit 3 (004) Engine Coolant Temperature Sensor - Signal Incorrect

(005) Engine Coolant Temperature Sensor - Intermittent Contact 4 (006) Intake Air Temperature Sensor, Short Circuit 5 (007) Intake Air Temperature Sensor, Open Circuit

(008) Intake Air Temperature Sensor - Intermittent Contact 6 (009) Hot Film Air Mass Sensor - Signal Too High 7 (010) Hot Film Air Mass Sensor - Open Circuit 8 (011) Engine idle speed contact Throttle valve position too large 9 Not used

10 (012) Engine idle speed contact air mass too large 11 (113) HFM-SFI control unit not coded 12 (014) Throttle valve potentiometer actual value too high. 13 (015) Throttle valve potentiometer actual value too low. 14 (017) Throttle valve potentiometer drive value implausibly high. 15 (018) Throttle valve potentiometer drive value implausibly low. 16 (020) ISC (Idle speed control) at lower control stop area, malfunction. 17 (021) ISC (Idle speed control) at upper control stop area, malfunction. 18 (022) CC,EFP actuator signals in limp home mode (emergency mode). 19 (023) O2 sensor (before/upstream of Cat. Conv.), voltage too large. 20 (024) O2 sensor (before/upstream of Cat. Conv.), open circuit 21 (025) O2 sensor (before/upstream of Cat. Conv.), signal incorrect 22 (026) O2 sensor (after/downstream of Cat. Conv.), voltage too large 23 (027) O2 sensor (after/downstream of Cat. Conv.), open circuit 24 (028) O2 sensor (after/downstream of Cat. Conv.), signal incorrect 25 (029) O2 sensor heater (before/upstream of Cat. Conv.), heater current (amp) too small 26 (030) O2 sensor heater (before/upstream of Cat. Conv.), heater current (amp) too large 27 (031) O2 sensor heater (before/upstream of Cat. Conv.), heater current, short circuit 28 (032) O2 sensor heater (after/downstream of Cat. Conv.), heating current (amp) too small 29 (033) O2 sensor heater (after/downstream of Cat. Conv.), heating current (amp) too large 30 (034) O2 sensor heater (after/downstream of Cat. Conv.), heating current, short circuit 31 (035) Fuel adaptation (lambda) control, mixture too lean (rich stop)

(Intake air leak, fuel injectors, diaphragm pressure regulator)

32 (036) Fuel adaptation (lambda) control, mixture too rich (lean stop)

(Intake air leak, fuel injectors, diaphragm pressure regulator) 33 (037) Injection valve cylinder 1, short to positive 34 (038) Injection valve cylinder 1, open circuit or short to ground 35 (039) Injection valve cylinder 2, short to positive 36 (040) Injection valve cylinder 2, open circuit or short to ground 37 (041) Injection valve cylinder 3, short to positive 38 (042) Injection valve cylinder 3, open circuit or short to ground

Page 23

OB15 MB Description

39 (043) Injection valve cylinder 4, short to positive 40 (044) Injection valve cylinder 4, open circuit or short to ground 41 (045) Injection valve cylinder 5, short to positive 42 (046) Injection valve cylinder 5, open circuit or short to ground 43 (047) Injection valve cylinder 6, short to positive 44 (048) Injection valve cylinder 6, open circuit or short to ground 45 (049) Self-adjustment too rich at Idle

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 46 (050) Self-adjustment too lean at Idle

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 47 (051) Self-adjustment too rich at Lower part load

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 48 (052) Self-adjustment too lean at Lower part load

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 49 (053) Self-adjustment too rich at Upper part load

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 50 (054) Self-adjustment too lean at Upper part load

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 51 (061) Ignition system output stage 3, Cylinder 1 misfires 52 (062) Ignition system output stage 3, Cylinder 6 misfires 53 (063) Ignition system output stage 3, Current value not reached 54 (055) Ignition system output stage 1, Cylinder 2 misfires 55 (056) Ignition system output stage 1, Cylinder 5 misfires 56 (057) Ignition system output stage 1, Current value not reached 57 (058) Ignition system output stage 2, Cylinder 3 misfires 58 (059) Ignition system output stage 2, Cylinder 4 misfires 59 (060) Ignition system output stage 2, Current value not reached 60 (064) Crankshaft signal incorrect 61 (065) Crankshaft signal Magnet missing or Number of teeth incorrect 62 (066) Crankshaft signal Speed incorrect, too high 63 (067) Camshaft signal incorrect/not recognized 64 (068) HFM circuit/trimming plug short to ground 65 (069) HFM circuit/trimming plug open circuit or short to positive 66 (070) TN speed signal (rpm) Output short to ground 67 (071) TN speed signal (rpm) Output short to positive 68 (072) Vehicle speed signal not recognized, short circuit 69 (073) Vehicle speed signal implausibly high, short circuit 70 (074) PSV relay K3/1 circuit short to positive 71 Not used 72 (076) Fuel pump relay open circuit or short circuit 73 Not used 74 (077) CO potentiometer Input short to positive 75 (079) Knock sensor 1 signal open circuit 76 (080) Knock sensor 2 signal open circuit 77 (081) Ignition timing max retardation reached at least one cylinder 78 (082) Ignition angle deviation between the individual cylinders too high 79 (083) Knock control analysis, HFM control unit defective 80 (084) Short-term self-adjustment Idle/Part-load fault 81 (085) Air pump relay-module/switch-valve output, open circuit or short circuit

82-83 Not used

84 (086) Fuel purge switch-valve, open circuit/short circuit 85 (087) Fuel purge switch-valve, short to positive 86 (088) Transmission Upshift delay switchover valve (Y3/3) without function (Logic Chain)

87-88 Not used

89 (089) Camshaft timing adjust actuator circuit short to positive 90 (090) Camshaft timing adjust actuator open circuit or short to ground

Page 24

OB15 MB Description

91 (091) EGR switch-valve short to positive 92 (092) EGR switch-valve open circuit or short to ground 93 (093) Transmission overload protection switch short to ground 94 (094) Transmission overload protection switch, circuit short or open 95 (095) Transmission overload protection switch, circuit short or open 96 (096) Transmission overload protection switch signal implausible 97 (097) CAN problem Transmission communication from HFM control system faulty 98 (098) CAN problem No data reception from ASR 99 (116) CAN problem No data reception from IRCL. ( if equip with IRCL) Voltage supply at Circuit 87M, low

voltage or implausible (Starting 06/93)

100 Not used 101 (099) CAN problem No data reception from EFP,TPM 102 (100) CAN problem No data reception from Diagnosis Module 103 Not used 104 (117) Attempt to start with IRCL locked 105 (101) No starter signal (Terminal 50), open or short circuit 106 (102) Thermocouple CAT B16/6 Temperature too high 107 (103) Thermocouple CAT B16/6 Temperature too low 108 (104) Fuel safety cut-off settled 109 Not used 110 (105) Resonance intake manifold switchover valve, short to positive 111 (106) Resonance intake manifold switchover valve, open circuit/short to ground 112 (107) Ignition dwell angle control output stage, short to ground 113 (114) HFM control unit identification illogical 114 (108) Oxygen sensor heater (after/downstream of Cat. Conv.), short to positive 115 (109) Oxygen sensor heater (after/downstream of Cat. Conv.), open circuit or short to ground 116 (115) HFM-SFI control unit N3/4 coding bytes illogical 117 Not used 118 (110) Voltage supply to HFM-SFI control unit, incorrect 119 (111) Voltage supply at HFM-SFI control unit, voltage too low 120 (112) HFM control unit faulty 121 (005) Coolant temperature sensor, Loose contact 122 (008) Intake air temperature sensor, Loose contact 123 (013) Idle speed contact, Loose contact 124 (016) Potentiometer throttle valve, Loose contact 125 (019) Potentiometer throttle valve drive, Loose contact 126 (078) CO potentiometer R33 Loose contact

127-128 Not used

Page 25

PMS (PEC) Fuel Injection - Digital

Engines Model Years

111 (4 cylinders, 1.8/2.0L engine) 1994-97

PMS Stored Fault Codes

Only Stored Fault Codes illuminate the Check Engine Light.(Code Scanner will display the fault code numbers listed under OB15, Mercedes factory numbers are listed under MB.)

OB15 MB Description

001 (002) Coolant temperature sensor, short circuit 002 (003) Coolant temperature sensor, open circuit 003 (004) Coolant temperature sensor, incorrect 004 (006) Intake air temperature sensor, short circuit 005 (007) Intake air temperature sensor, open circuit 006 (009) PMS Control unit, Intake manifold pressure implausible 007 (010) PMS Control unit, No Intake manifold pressure 008 (011) Idle speed contact closed signal incorrect 009 (068) Idle speed contact open circuit

010-011 Not used

012 (013) Potentiometer throttle valve, value too high 013 (014) Potentiometer throttle valve, value too low 014 (016) Potentiometer throttle valve drive value too high/incorrect 015 (017) Potentiometer throttle valve drive value too low/incorrect 016 (019) Idle speed control at lower control stop area, malfunction 017 (020) Idle speed control at upper control stop area, malfunction 018 (021) Idle speed control in limp home-mode (emergency operation) 019 (022) O2 sensor voltage too large 020 (023) O2 sensor, open circuit 021 (024) O2 sensor signal illogical 022 (069) Exhaust flap short to positive 023 (070) Exhaust flap open circuit or short to ground 024 Not used 025 (025) O2 sensor heater current (amps) too small 026 (026) O2 sensor heater current (amps) too large 027 (027) O2 sensor heater, short circuit

028-030 Not used

031 (028) Fuel adaptation (lambda) control mixture too lean (Intake air leak, fuel injectors, diaphragm

pressure regulator)

032 (029) Fuel adaptation (lambda) control mixture too rich (Intake air leak, fuel injectors, diaphragm

pressure regulator) 033 (030) Injection valve cylinder 1/4 short to positive 034 (031) Injection valve cylinder 1/4 open circuit or short to ground 035 (032) Injection valve cylinder 2/3 short to positive 036 (033) Injection valve cylinder 2/3 open circuit or short to ground 037 (064) Input signal from IFZ, open circuit or short to positive 038 (065) Input signal from IFZ, short to ground 039 (066) IFZ system unresponsive 040 (067) Input signal from IFZ incorrect

041-044 Not used

045 (034) Self-adjustment too rich at Idle

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 046 (035) Self-adjustment too lean at Idle

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine) 047 (036) Self-adjustment too rich at Part load (Intake air leak, fuel injectors, diaphragm pressure

regulator, wear engine)

Page 26

OB15 MB Description

048 (037) Self-adjustment too lean at Part load

(Intake air leak, fuel injectors, diaphragm pressure regulator, wear engine)

049-050 Not used

051 (038) Ignition system output stage 1, short to positive 052 (039) Ignition system output stage 1, Cylinder 1/4 misfires 053 (040) Ignition system output stage 1, Amperage not achieved 054 (041) Ignition system output stage 2, short to positive 055 (042) Ignition system output stage 2, Cylinder 2/3 misfires 056 (043) Ignition system output stage 2, Amperage not achieved

057-059 Not used

060 (044) Crankshaft signal incorrect 061 (045) Crankshaft signal Magnet missing or Numbers of teeth incorrect 062 (046) Crankshaft signal Speed incorrect, too high 063 Not used 064 (047) PMS circuit/trimming plug short to ground 065 (048) PMS circuit/trimming plug open circuit or short to positive 066 (049) TN speed signal (rpm) Output short to ground 067 (050) TN speed signal (rpm) Output short to positive 068 (051) Vehicle speed signal not recognized, short circuit 069 (052) Vehicle speed signal too high, short circuit 070 (053) PSV relay open circuit or short to positive 071 (054) PSV relay short to ground 072 (055) Fuel pump relay open circuit or short to positive 073 (056) Fuel pump relay short to ground 074 (057) CO potentiometer Input circuit short to positive

075 ~079 Not used

080 (061) Short-term self-adjustment faulty at idle speed or part load 081 (071) Rear axle ratio was changed 082 (072) Rear axle ratio signal incorrect 083 Not used 084 (059) Fuel purge switch-valve open circuit or short to positive 085 (060) Fuel purge switch-valve short to ground 086 (062) Transmission shifting delay/smooth switch-valve, open circuit or short circuit

087 ~092 Not used

093 (073) Transmission protection short to ground or active too long

094-095 Not used

096 (074) Transmission protection open circuit or short to positive

097 ~ 118 Not used

119 (063) PMS control unit voltage supply too low 120 Not used 121 (005) Coolant temperature sensor, Loose contact 122 (008) Intake air temperature sensor, Loose contact 123 (012) Idle speed contact, Loose contact 124 (015) Potentiometer throttle valve, Loose contact 125 (018) potentiometer throttle valve drive value, Loose contact 126 (058) CO potentiometer circuit, Loose contact

127-128 Not used

Page 27

ME Sequential Multiport Fuel Injection (ME-SFI)

Engines Model Years

104 (6 cylinders, 2.8/3.2L engine) 8/96111 (4 cylinder 2.0, 2.2, 2.3L) 8/96112 (V6 engine, 2.4/2.8/3.2L) 8/97113 (V8 engine, 4.3, 5.0L) 8/98119 (V8 engine 4.2/5.0L) 8/95-1998 120 (12 cylinder engine) 8/95-2000

ME-SFI ME Injection incorporates EA/CC/ISC, DM, DI and BM codes.

MB ME Code Description

P00XX Fuel and Air Metering and Auxiliary Emission Controls

P0010 A Camshaft Position Actuator Circuit (Bank 1) P0011 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) P0012 A Camshaft Position - Timing Over-Retarded (Bank 1) P0013 B Camshaft Position - Actuator Circuit (Bank 1) P0014 B Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) P0015 B Camshaft Position - Timing Over-Retarded (Bank 1) P0020 A Camshaft Position Actuator Circuit (Bank 2) P0021 A Camshaft Position - Timing Over-Advanced or System Performance (Bank 2) P0022 A Camshaft Position - Timing Over-Retarded (Bank 2) P0023 B Camshaft Position - Actuator Circuit (Bank 2) P0024 B Camshaft Position - Timing Over-Advanced or System Performance (Bank 2) P0025 B Camshaft Position - Timing Over-Retarded (Bank 2) P0030 H02S Heater Control Circuit (Bank 1) Sensor 1) P0031 H02S Heater Control Circuit Low (Bank 1 Sensor 1) P0032 H02S Heater Control Circuit High (Bank 1 Sensor 1) P0033 Turbo Charger Bypass Valve Control Circuit P0034 Turbo Charger Bypass Valve Control Circuit Low P0035 Turbo Charger Bypass Valve Control Circuit High P0036 H02S Heater Control Circuit (Bank 1 Sensor 2) P0037 H02S Heater Control Circuit Low (Bank 1 Sensor 2) P0038 H02S Heater Control Circuit High (Bank 1 Sensor 2) P0042 H02S Heater Control Circuit (Bank 1 Sensor 3) P0043 H02S Heater Control Circuit Low (Bank 1 Sensor 3) P0044 H02S Heater Control Circuit High (Bank 1 Sensor 3) P0050 H02S Heater Control Circuit (Bank 2 Sensor 1) P0051 H02S Heater Control Circuit Low (Bank 2 Sensor 1) P0052 H02S Heater Control Circuit High (Bank 2 Sensor 1) P0056 H02S Heater Control Circuit (Bank 2 Sensor 2) P0057 H02S Heater Control Circuit Low (Bank 2 Sensor 2) P0058 H02S Heater Control Circuit High (Bank 2 Sensor 2) P0062 H02S Heater Control Circuit (Bank 2 Sensor 3) P0063 H02S Heater Control Circuit Low (Bank 2 Sensor 3) P0064 H02S Heater Control Circuit High (Bank 2 Sensor 3) P0065 Air Assisted Injector Control Range/Performance P0066 Air Assisted Injector Control Circuit or Circuit Low P0067 Air Assisted Injector Control Circuit High P0070 Ambient Air Temperature Sensor Circuit P0071 Ambient Air Temperature Sensor Range/Performance P0072 Ambient Air Temperature Sensor Circuit Low Input P0073 Ambient Air Temperature Sensor Circuit High Input P0074 Ambient Air Temperature Sensor Circuit Intermittent P0075 Intake Valve Control Solenoid Circuit (Bank 1)

Page 28

MB ME Code Description

P0076 Intake Valve Control Solenoid Circuit Low (Bank 1) P0077 Intake Valve Control Solenoid Circuit High (Bank 1) P0078 Exhaust Valve Control Solenoid Circuit (Bank 1) P0079 Exhaust Valve Control Solenoid Circuit Low (Bank 1) P0080 Exhaust Valve Control Solenoid Circuit High (Bank 1) P0081 Intake valve Control Solenoid Circuit (Bank 2) P0082 Intake Valve Control Solenoid Circuit Low (Bank 2) P0083 Intake Valve Control Solenoid Circuit High (Bank 2) P0084 Exhaust Valve Control Solenoid Circuit (Bank 2) P0085 Exhaust Valve Control Solenoid Circuit Low (Bank 2) P0086 Exhaust Valve Control Solenoid Circuit High (Bank 2)

P01XX Fuel and Air Metering

P0100 Mass or Volume Air Flow Circuit P0101 Mass or Volume Air Flow Circuit Range/Performance Problem P0102 Mass or Volume Air Flow Circuit Low Input P0103 Mass or Volume Air Flow Circuit High Input P0104 Mass or Volume Air Flow Circuit Intermittent P0105 Manifold Absolute Pressure/Barometric Pressure Circuit P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent P0110 Intake Air Temperature Circuit P0111 Intake Air Temperature Circuit Range/Performance Problem P0112 Intake Air Temperature Circuit Low Input P0113 Intake Air Temperature Circuit High Input P0114 Intake Air Temperature Circuit Intermittent P0115 Engine Coolant Temperature Circuit P0116 Engine Coolant Temperature Circuit Range/Performance Problem P0117 Engine Coolant Temperature Circuit Low Input P0118 Engine Coolant Temperature Circuit High Input P0119 Engine Coolant Temperature Circuit Intermittent P0120 Throttle/Pedal Position Sensor/Switch A Circuit, EA/CC/ISC Actuator P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input P0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input P0124 Throttle/Pedal Position Sensor/Switch A Circuit Intermittent P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control P0126 Insufficient Coolant Temperature for Stable Operation P0127 Intake Air Temperature Too High P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) P0130 02 Sensor Circuit (Bank 1 Sensor 1) P0131 02 Sensor Circuit Low Voltage (Bank 1 Sensor 1) P0132 02 Sensor Circuit High Voltage (Bank 1 Sensor 1) P0133 02 Sensor Circuit Slow Response (Bank 1 Sensor 1) P0134 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) P0135 02 Sensor Heater Circuit (Bank 1 Sensor 1) P0136 02 Sensor Circuit Malfunction (Bank 1 Sensor 2) P0137 02 Sensor Circuit Low Voltage (Bank 1 Sensor 2) P0138 02 Sensor Circuit High Voltage (Bank 1 Sensor 2) P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2) P0140 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) P0141 02 Sensor Heater Circuit (Bank 1 Sensor 2) P0142 02 Sensor Circuit Malfunction (Bank 1 Sensor 3) P0143 02 Sensor Circuit Low Voltage (Bank 1 Sensor 3)

Page 29

MB ME Code Description

P0144 02 Sensor Circuit High Voltage (Bank 1 Sensor 3) P0145 02 Sensor Circuit Slow Response (Bank 1 Sensor 3) P0146 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 3) P0147 02 Sensor Heater Circuit (Bank 1 Sensor 3) P0148 Fuel Delivery Error P0149 Fuel Timing Error P0150 02 Sensor Circuit (Bank 2 Sensor 1) P0151 02 Sensor Circuit Low Voltage (Bank 2 Sensor 1) P0152 02 Sensor Circuit High Voltage (Bank 2 Sensor 1) P0153 02 Sensor Circuit Slow Response (Bank 2 Sensor 1) P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) P0155 02 Sensor Heater Circuit (Bank 2 Sensor 1) P0156 02 Sensor Circuit Malfunction (Bank 2 Sensor 2) P0157 02 Sensor Circuit Low Voltage (Bank 2 Sensor 2) P0158 02 Sensor Circuit High Voltage (Bank 2 Sensor 2) P0159 02 Sensor Circuit Slow Response (Bank 2 Sensor 2) P0160 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 2) P0161 02 Sensor Heater Circuit (Bank 2 Sensor 2) P0162 02 Sensor Circuit Malfunction (Bank 2 Sensor 3) P0163 02 Sensor Circuit Low Voltage (Bank 2 Sensor 3) P0164 02 Sensor Circuit High Voltage (Bank 2 Sensor 3) P0165 02 Sensor Circuit Slow Response (Bank 2 Sensor 3) P0166 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 3) P0167 02 Sensor Heater Circuit (Bank 2 Sensor 3) P0168 Fuel Temperature Too High P0169 Incorrect Fuel Composition P0170 Fuel Trim (Bank 1) P0171 System too Lean (Bank 1) P0172 System too Rich (Bank 1) P0173 Fuel Trim Malfunction (Bank 2) P0174 System too Lean (Bank 2) P0175 System too Rich (Bank 2) P0176 Fuel Composition Sensor Circuit P0177 Fuel Composition Sensor Circuit Range/Performance P0178 Fuel Composition Sensor Circuit Low Input P0179 Fuel Composition Sensor Circuit High Input P0180 Fuel Temperature Sensor A Circuit P0181 Fuel Temperature Sensor A Circuit Range/Performance P0182 Fuel Temperature Sensor A Circuit Low Input P0183 Fuel Temperature Sensor A Circuit High Input P0184 Fuel Temperature Sensor A Circuit Intermittent P0185 Fuel Temperature Sensor B Circuit P0186 Fuel Temperature Sensor B Circuit Range/Performance P0187 Fuel Temperature Sensor B Circuit Low Input P0188 Fuel Temperature Sensor B Circuit High Input P0189 Fuel Temperature Sensor B Circuit Intermittent P0190 Fuel Rail Pressure Sensor Circuit P0191 Fuel Rail Pressure Sensor Circuit Range/Performance P0192 Fuel Rail Pressure Sensor Circuit Low Input P0193 Fuel Rail Pressure Sensor Circuit High Input P0194 Fuel Rail Pressure Sensor Circuit Intermittent P0195 Engine Oil Temperature Sensor P0196 Engine Oil Temperature Sensor Range/Performance P0197 Engine Oil Temperature Sensor Low P0198 Engine Oil Temperature Sensor High

Page 30

MB ME Code Description

P0199 Engine Oil Temperature Sensor Intermittent

P02XX Fuel and Air Metering

P0200 Injector Circuit P0201 Injector Circuit - Cylinder 1 P0202 Injector Circuit - Cylinder 2 P0203 Injector Circuit - Cylinder 3 P0204 Injector Circuit - Cylinder 4 P0205 Injector Circuit - Cylinder 5 P0206 Injector Circuit - Cylinder 6 P0207 Injector Circuit - Cylinder 7 P0208 Injector Circuit - Cylinder 8 P0209 Injector Circuit - Cylinder 9 P0210 Injector Circuit - Cylinder 10 P0211 Injector Circuit - Cylinder 11 P0212 Injector Circuit - Cylinder 12 P0213 Cold Start Injector 1 P0214 Cold Start Injector 2 P0215 Engine Shutoff Solenoid P0216 Injector/Injection Timing Control Circuit P0217 Engine Coolant Over Temperature Condition P0218 Transmission Fluid Over Temperature Condition P0219 Engine Overspeed Condition P0220 Throttle/Pedal Position Sensor/Switch "B" Circuit P0221 Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance Problem P0222 Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input P0223 Throttle/Pedal Position Sensor/Switch "B" Circuit High Input P0224 Throttle/Pedal Position Sensor/Switch "B" Circuit Intermittent P0225 Throttle/Pedal Position Sensor/Switch "C" Circuit P0226 Throttle/Pedal Position Sensor/Switch "C" Circuit Range/Performance Problem P0227 Throttle/Pedal Position Sensor/Switch "C" Circuit Low Input P0228 Throttle/Pedal Position Sensor/Switch "C" Circuit High Input P0229 Throttle/Pedal Position Sensor/Switch "C" Circuit Intermittent P0230 Fuel Pump Primary Circuit P0231 Fuel Pump Secondary Circuit Low P0232 Fuel Pump Secondary Circuit High P0233 Fuel Pump Secondary Circuit Intermittent P0234 Turbo/Super Charger Overboost Condition P0235 Turbo/Super Charger Boost Sensor "A" Circuit P0236 Turbo/Super Charger Boost Sensor "A" Circuit Range/Performance P0237 Turbo/Super Charger Boost Sensor "A" Circuit Low P0238 Turbo/Super Charger Boost Sensor "A" Circuit High P0239 Turbo/Super Charger Boost Sensor "B" Circuit P0240 Turbo/Super Charger Boost Sensor "B" Circuit Range/Performance P0241 Turbo/Super Charger Boost Sensor "B" Circuit Low P0242 Turbo/Super Charger Boost Sensor "B" Circuit High P0243 Turbo/Super Charger Wastegate Solenoid "A" P0244 Turbo/Super Charger Wastegate Solenoid "A" Range/Performance P0245 Turbo/Super Charger Wastegate Solenoid "A" Low P0246 Turbo/Super Charger Wastegate Solenoid "A" High P0247 Turbo/Super Charger Wastegate Solenoid "B" P0248 Turbo/Super Charger Wastegate Solenoid "B" Range/Performance P0249 Turbo/Super Charger Wastegate Solenoid "B" Low P0250 Turbo/Super Charger Wastegate Solenoid "B" High P0251 Injection Pump Fuel Metering Control "A" (Cam/Rotor/injector) P0252 Injection Pump Fuel Metering Control "A" Range/Performance (Cam/Rotor/Injector)

Page 31

MB ME Code Description

P0253 Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector) P0254 Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector) P0255 Injection Pump Fuel Metering Control "A" Intermittent (Cam/Rotor/Injector) P0256 Injection Pump Fuel Metering Control "B" (Cam/Rotor/Injector) P0257 Injection Pump Fuel Metering Control "B" Range/Performance (Cam/Rotor/Injector) P0258 Injection Pump Fuel Metering Control "B" Low (Cam/Rotor/Injector) P0259 Injection Pump Fuel Metering Control "B" High (Cam/Rotor/Injector) P0260 Injection Pump Fuel Metering Control "B" Intermittent (Cam/Rotor/Injector) P0261 Cylinder 1 Injector Circuit Low P0262 Cylinder 1 Injector Circuit High P0263 Cylinder 1 Contribution/Balance P0264 Cylinder 2 Injector Circuit Low P0265 Cylinder 2 Injector Circuit High P0266 Cylinder 2 Contribution/Balance P0267 Cylinder 3 Injector Circuit Low P0268 Cylinder 3 Injector Circuit High P0269 Cylinder 3 Contribution/Balance P0270 Cylinder 4 Injector Circuit Low P0271 Cylinder 4 Injector Circuit High P0272 Cylinder 4 Contribution/Balance P0273 Cylinder 5 Injector Circuit Low P0274 Cylinder 5 Injector Circuit High P0275 Cylinder 5 Contribution/Balance P0276 Cylinder 6 Injector Circuit Low P0277 Cylinder 6 Injector Circuit High P0278 Cylinder 6 Contribution/Balance P0279 Cylinder 7 Injector Circuit Low P0280 Cylinder 7 Injector Circuit High P0281 Cylinder 7 Contribution/Balance P0282 Cylinder 8 Injector Circuit Low P0283 Cylinder 8 Injector Circuit High P0284 Cylinder 8 Contribution/Balance P0285 Cylinder 9 Injector Circuit Low P0286 Cylinder 9 Injector Circuit High P0287 Cylinder 9 Contribution/Balance P0288 Cylinder 10 Injector Circuit Low P0289 Cylinder 10 Injector Circuit High P0290 Cylinder 10 Contribution/Balance P0291 Cylinder 11 Injector Circuit Low P0292 Cylinder 11 Injector Circuit High P0293 Cylinder 11 Contribution/Balance P0294 Cylinder 12 Injector Circuit Low P0295 Cylinder 12 Injector Circuit High P0296 Cylinder 12 Contribution/Balance P0298 Engine Oil Over Temperature

P03XX Ignition System or Misfire

P0300 Random/Multiple Cylinder Misfire Detected - Mechanical, Ignition or Injection Malfunction P0301 Cylinder 1 Misfire Detected P0302 Cylinder 2 Misfire Detected P0303 Cylinder 3 Misfire Detected P0304 Cylinder 4 Misfire Detected P0305 Cylinder 5 Misfire Detected P0306 Cylinder 6 Misfire Detected P0307 Cylinder 7 Misfire Detected P0308 Cylinder 8 Misfire Detected

Page 32

MB ME Code Description

P0309 Cylinder 9 Misfire Detected P0310 Cylinder 10 Misfire Detected P0311 Cylinder 11 Misfire Detected P0312 Cylinder 12 Misfire Detected P0313 Misfire Detected with Low Fuel P0314 Single Cylinder Misfire (Cylinder not Specified) P0320 Ignition/Distributor Engine Speed Input Circuit P0321 Ignition/Distributor Engine Speed Input Circuit Range/Performance P0322 Ignition/Distributor Engine Speed Input Circuit No Signal P0323 Ignition/Distributor Engine Speed Input Circuit Intermittent P0324 Knock Control System Error P0325 Knock Sensor 1 Circuit (Bank 1 or Single Sensor P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor P0327 Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor P0328 Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor P0329 Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor P0330 Knock Sensor 2 Circuit (Bank 2) P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2) P0332 Knock Sensor 2 Circuit Low Input (Bank 2) P0333 Knock Sensor 2 Circuit High Input (Bank 2) P0334 Knock Sensor 2 Circuit Input Intermittent (Bank 2) P0335 Crankshaft Position Sensor A Circuit P0336 Crankshaft Position Sensor A Circuit Range/Performance P0337 Crankshaft Position Sensor A Circuit Low Input P0338 Crankshaft Position Sensor A Circuit High Input P0339 Crankshaft Position Sensor A Circuit Intermittent P0340 Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) P0341 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 or Single Sensor P0342 Camshaft Position Sensor "A" Circuit Low Input (Bank 1 or Single Sensor P0343 Camshaft Position Sensor "A" Circuit High Input (Bank 1 or Single Sensor) P0344 Camshaft Position Sensor "A" Circuit Intermittent (Bank 1 or Single Sensor P0345 Camshaft Position Sensor "A" Circuit (Bank 2) P0346 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2) P0347 Camshaft Position Sensor "A" Circuit Low Input (Bank 2) P0348 Camshaft Position Sensor "A" Circuit High Input (Bank 2) P0349 Camshaft Position Sensor "A" Circuit Intermittent (Bank 2) P0350 Ignition Coil Primary/Secondary Circuit P0351 Ignition Coil "A" Primary/Secondary Circuit P0352 Ignition Coil "B" Primary/Secondary Circuit P0353 Ignition Coil "C" Primary/Secondary Circuit P0354 Ignition Coil "D" Primary/Secondary Circuit P0355 Ignition Coil "E" Primary/Secondary Circuit P0356 Ignition Coil “F" Primary/Secondary Circuit P0357 Ignition Coil "G" Primary/Secondary Circuit P0358 Ignition Coil "H" Primary/Secondary Circuit P0359 Ignition Coil "I" Primary/Secondary Circuit P0360 Ignition Coil "J" Primary/Secondary Circuit P0361 Ignition Coil "K" Primary/Secondary Circuit P0362 Ignition Coil "L" Primary/Secondary Circuit P0365 Camshaft Position Sensor "B" Circuit (Bank 1) P0366 Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1) P0367 Camshaft Position Sensor "B" Circuit Low Input (Bank 1) P0368 Camshaft Position Sensor "B" Circuit High Input (Bank 1) P0369 Camshaft Position Sensor "B" Circuit Intermittent (Bank 1) P0370 Timing Reference High Resolution Signal "A" (Camshaft to Crankshaft Angle)

Page 33

MB ME Code Description

P0371 Timing Reference High Resolution Signal "A" Too Many Pulses P0372 Timing Reference High Resolution Signal "A" Too Few Pulses P0373 Timing Reference High Resolution Signal "A" Intermittent/Erratic Pulses P0374 Timing Reference High Resolution Signal "A" No Pulse P0375 Timing Reference High Resolution Signal "B" P0376 Timing Reference High Resolution Signal "B" Too Many Pulses P0377 Timing Reference High Resolution Signal "B" Too Few Pulses P0378 Timing Reference High Resolution Signal "B" Intermittent/Erratic Pulses P0379 Timing Reference High Resolution Signal "B" No Pulses P0380 Glow Plug/Heater Circuit "A" P0381 Glow Plug/Heater Indicator Circuit P0382 Glow Plug/Heater Circuit "B" P0385 Crankshaft Position Sensor "B" Circuit P0386 Crankshaft Position Sensor "B" Circuit Range/Performance P0387 Crankshaft Position Sensor "B" Circuit Low Input P0388 Crankshaft Position Sensor "B" Circuit High Input P0389 Crankshaft Position Sensor "B" Circuit Intermittent P0390 Camshaft Position Sensor "B" Circuit (Bank 2) P0391 Camshaft Position Sensor "B" Circuit Range/Performance (Bank 2) P0392 Camshaft Position Sensor "B" Circuit Low Input (Bank 2) P0393 Camshaft Position Sensor "B" Circuit High Input (Bank 2) P0394 Camshaft Position Sensor "B" Circuit Intermittent (Bank 2)

P04XX Auxiliary Emission Controls

P0400 Exhaust Gas Recirculation Flow P0401 Exhaust Gas Recirculation Flow Insufficient Detected P0402 Exhaust Gas Recirculation Flow Excessive Detected P0403 Exhaust Gas Recirculation Control Circuit P0404 Exhaust Gas Recirculation Control Circuit Range/Performance P0405 Exhaust Gas Recirculation Sensor "A" Circuit Low P0406 Exhaust Gas Recirculation Sensor "A" Circuit High P0407 Exhaust Gas Recirculation Sensor "B" Circuit Low P0408 Exhaust Gas Recirculation Sensor "B" Circuit High P0409 Exhaust Gas Recirculation Sensor "A" Circuit P0410 Secondary Air Injection System P0411 Secondary Air Injection System Incorrect Flow Detected P0412 Secondary Air Injection System Switching Valve "A" Circuit P0413 Secondary Air Injection System Switching Valve "A" Circuit Open P0414 Secondary Air Injection System Switching Valve "A" Circuit Shorted P0415 Secondary Air Injection System Switching Valve "B" Circuit P0416 Secondary Air Injection System Switching Valve "B" Circuit Open P0417 Secondary Air Injection System Switching Valve "B" Circuit Shorted P0418 Secondary Air Injection System Relay "A" Circuit P0419 Secondary Air Injection System Relay "B" Circuit P0420 Catalyst System Efficiency Below Threshold (Bank 1) P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1) P0422 Main Catalyst Efficiency Below Threshold (Bank 1) P0423 Heated Catalyst Efficiency Below Threshold (Bank 1) P0424 Heated Catalyst Temperature Below Threshold (Bank 1) P0425 Catalyst Temperature Sensor (Bank 1) P0426 Catalyst Temperature Sensor Range/Performance (Bank 1) P0427 Catalyst Temperature Sensor Low Input (Bank 1) P0428 Catalyst Temperature Sensor High Input (Bank 1) P0429 Catalyst Heater Control Circuit (Bank 1) P0430 Catalyst System Efficiency Below Threshold (Bank 2) P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)

Page 34

MB ME Code Description

P0432 Main Catalyst Efficiency Below Threshold (Bank 2) P0433 Heated Catalyst Efficiency Below Threshold (Bank 2) P0434 Heated Catalyst Temperature Below Threshold (Bank 2) P0435 Catalyst Temperature Sensor (Bank 2) P0436 Catalyst Temperature Sensor Range/Performance (Bank 2) P0437 Catalyst Temperature Sensor Low Input (Bank 2) P0438 Catalyst Temperature Sensor High Input (Bank 2) P0439 Catalyst Heater Control Circuit (Bank 2) P0440 Evaporative Emission Control System P0441 Evaporative Emission Control System Incorrect Purge Flow P0442 Evaporative Emission Control System Leak Detected (small leak) P0443 Evaporative Emission Control System Purge Control Valve Circuit P0444 Evaporative Emission Control System Purge Control Valve Circuit Open P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted P0446 Evaporative Emission Control System Vent Control Circuit P0447 Evaporative Emission Control System Vent Control Circuit Open P0448 Evaporative Emission Control System Vent Control Circuit Shorted P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit P0450 Evaporative Emission Control System Pressure Sensor P0451 Evaporative Emission Control System Pressure Sensor Range/Performance P0452 Evaporative Emission Control System Pressure Sensor Low Input P0453 Evaporative Emission Control System Pressure Sensor High Input P0454 Evaporative Emission Control System Pressure Sensor Intermittent P0455 Evaporative Emission Control System Leak Detected (gross leak) P0456 Evaporative Emission Control System Leak Detected (very small leak) P0457 Evaporative Emission Control System Leak Detected (fuel cap loose/off) P0460 Fuel Level Sensor Circuit P0461 Fuel Level Sensor Circuit Range/Performance P0462 Fuel Level Sensor Circuit Low Input P0463 Fuel Level Sensor Circuit High Input P0464 Fuel Level Sensor Circuit Intermittent P0465 EVAP Purge Flow Sensor Circuit P0466 EVAP Purge Flow Sensor Circuit Range/Performance P0467 EVAP Purge Flow Sensor Circuit Low Input P0468 EVAP Purge Flow Sensor Circuit High Input P0469 EVAP Purge Flow Sensor Circuit Intermittent P0470 Exhaust Pressure Sensor P0471 Exhaust Pressure Sensor Range/Performance P0472 Exhaust Pressure Sensor Low P0473 Exhaust Pressure Sensor High P0474 Exhaust Pressure Sensor Intermittent P0475 Exhaust Pressure Control Valve P0476 Exhaust Pressure Control Valve Range/Performance P0477 Exhaust Pressure Control Valve Low P0478 Exhaust Pressure Control Valve High P0479 Exhaust Pressure Control Valve Intermittent P0480 Cooling Fan 1 Control Circuit P0481 Cooling Fan 2 Control Circuit P0482 Cooling Fan 3 Control Circuit P0483 Cooling Fan Rationality Check P0484 Cooling Fan Circuit Over Current P0485 Cooling Fan Power/Ground Circuit P0486 Exhaust Gas Recirculation Sensor "B" Circuit P0487 Exhaust Gas Recirculation Throttle Position Control Circuit P0488 Exhaust Gas Recirculation Throttle Position Control Range/Performance

Page 35

MB ME Code Description

P0491 Secondary Air Injection System (Bank 1) P0492 Secondary Air Injection System (Bank 2)

P05XX Vehicle Speed, Idle Control, and Auxiliary Inputs

P0500 Vehicle Speed Sensor P0501 Vehicle Speed Sensor Range/Performance P0502 Vehicle Speed Sensor Circuit Low Input P0503 Vehicle Speed Sensor Intermittent/Erratic/High P0505 Idle Control System P0506 Idle Control System RPM Lower Than Expected P0507 Idle Control System RPM Higher Than Expected P0508 Idle Control System Circuit Low P0509 Idle Control System Circuit High P0510 Closed Throttle Position Switch P0512 Starter Request Circuit P0513 Incorrect Immobilizer Key ("Immobilizer" pending SAE J1930 approval) See P1570 P0515 Battery Temperature Sensor Circuit P0516 Battery Temperature Sensor Circuit Low P0517 Battery Temperature Sensor Circuit High P0520 Engine Oil Pressure Sensor/Switch Circuit P0521 Engine Oil Pressure Sensor/Switch Range/Performance P0522 Engine Oil Pressure Sensor/Switch Low Voltage P0523 Engine Oil Pressure Sensor/Switch High Voltage P0524 Engine Oil Pressure Too Low P0530 A/C Refrigerant Pressure Sensor Circuit P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance P0532 A/C Refrigerant Pressure Sensor Circuit Low Input P0533 A/C Refrigerant Pressure Sensor Circuit High Input P0534 Air Conditioner Refrigerant Charge Loss P0540 Intake Air Heater Circuit P0541 Intake Air Heater Circuit Low P0542 Intake Air Heater Circuit High P0544 Exhaust Gas Temperature Sensor Circuit (Bank 1) P0545 Exhaust Gas Temperature Sensor Circuit Low (Bank 1) P0546 Exhaust Gas Temperature Sensor Circuit High (Bank 1) P0547 Exhaust Gas Temperature Sensor Circuit (Bank 2) P0548 Exhaust Gas Temperature Sensor Circuit Low (Bank 2) P0549 Exhaust Gas Temperature Sensor Circuit High (Bank 2) P0550 Power Steering Pressure Sensor Circuit P0551 Power Steering Pressure Sensor Circuit Range/Performance P0552 Power Steering Pressure Sensor Circuit Low Input P0553 Power Steering Pressure Sensor Circuit High Input P0554 Power Steering Pressure Sensor Circuit Intermittent P0560 System Voltage P0561 System Voltage Unstable P0562 System Voltage Low P0563 System Voltage High P0564 Cruise Control Multi-Function Input Signal P0565 Cruise Control On Signal P0566 Cruise Control Off Signal P0567 Cruise Control Resume Signal P0568 Cruise Control Set Signal P0569 Cruise Control Coast Signal P0570 Cruise Control Acceleration Signal P0571 Cruise Control/Brake Switch A Circuit P0572 Cruise Control/Brake Switch A Circuit Low

Page 36

MB ME Code Description

P0573 Cruise Control/Brake Switch A Circuit High P0574 Cruise Control System - Vehicle Speed Too High P0575 Cruise Control Input Circuit P0576 Cruise Control Input Circuit Low P0577 Cruise Control Input Circuit High

P0578 through P0580 Reserved for Future Cruise Control Codes

P06XX Computer and Auxiliary Outputs

P0600 Serial Communication Link - General P0601 Internal Control Module Memory Check Sum Error P0602 Control Module Programming Error P0603 Internal Control Module Keep Alive Memory (KAM) Error P0604 Internal Control Module Random Access Memory (RAM) Error P0605 Internal Control Module Read Only Memory (ROM) Error P0606 ECM/PCM Processor P0607 Control Module Performance P0608 Control Module VSS Output "A" P0609 Control Module VSS Output "B" P0610 Control Module Vehicle Options Error P0615 Starter Relay Circuit P0616 Starter Relay Circuit Low P0617 Starter Relay Circuit High P0618 Alternative Fuel Control Module KAM Error P0619 Alternative Fuel Control Module RAM/ROM Error P0620 Generator Control Circuit P0621 Generator Lamp "L" Terminal Control Circuit P0622 Generator Field "F" Terminal Control Circuit P0623 Generator Lamp Control Circuit P0624 Fuel Cap Lamp Control Circuit P0630 VIN Not Programmed or Mismatch - ECM/PCM P0631 VIN Not Programmed or Mismatch - TCM P0635 Power Steering Control Circuit P0636 Power Steering Control Circuit Low P0637 Power Steering Control Circuit High P0638 Throttle Actuator Control Range/Performance (Bank 1) P0639 Throttle Actuator Control Range/Performance (Bank 2) P0640 Intake Air Heater Control Circuit P0645 A/C Clutch Relay Control Circuit P0646 A/C Clutch Relay Control Circuit Low P0647 A/C Clutch Relay Control Circuit High P0648 Immobilizer Lamp Control Circuit ("Immobilizer" pending SAE J1930 approval) P0649 Speed Control Lamp Control Circuit P0650 Malfunction Indicator Lamp (MIL) Control Circuit P0654 Engine RPM Output Circuit P0655 Engine Hot Lamp Output Control Circuit P0656 Fuel Level Output Circuit P0660 Intake Manifold Tuning Valve Control Circuit (Bank 1) P0661 Intake Manifold Tuning Valve Control Circuit Low (Bank 1) P0662 Intake Manifold Tuning Valve Control Circuit High (Bank 1) P0663 Intake Manifold Tuning Valve Control Circuit (Bank 2) P0664 Intake Manifold Tuning Valve Control Circuit Low (Bank 2) P0665 Intake Manifold Tuning Valve Control Circuit High (Bank 2)

P07XX Transmission

P0700 Transmission Control System (MIL Request) P0701 Transmission Control System Range/Performance P0702 Transmission Control System Electrical

Page 37

MB ME Code Description

P0703 Torque Converter/Brake Switch B Circuit P0704 Clutch Switch Input Circuit Malfunction P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input) P0706 Transmission Range Sensor Circuit Range/Performance P0707 Transmission Range Sensor Circuit Low Input P0708 Transmission Range Sensor Circuit High Input P0709 Transmission Range Sensor Circuit Intermittent P0710 Transmission Fluid Temperature Sensor Circuit P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance P0712 Transmission Fluid Temperature Sensor Circuit Low Input P0713 Transmission Fluid Temperature Sensor Circuit High Input P0714 Transmission Fluid Temperature Sensor Circuit Intermittent P0715 Input/Turbine Speed Sensor Circuit P0716 Input/Turbine Speed Sensor Circuit Range/Performance P0717 Input/Turbine Speed Sensor Circuit No Signal P0718 Input/Turbine Speed Sensor Circuit Intermittent P0719 Torque Converter/Brake Switch B Circuit Low P0720 Output Speed Sensor Circuit P0721 Output Speed Sensor Circuit Range/Performance P0722 Output Speed Sensor Circuit No Signal P0723 Output Speed Sensor Circuit Intermittent P0724 Torque Converter/Brake Switch B Circuit High P0725 Engine Speed Input Circuit P0726 Engine Speed Input Circuit Range/Performance P0727 Engine Speed Input Circuit No Signal P0728 Engine Speed Input Circuit Intermittent P0730 Incorrect Gear Ratio P0731 Gear 1 Incorrect Ratio P0732 Gear 2 Incorrect Ratio P0733 Gear 3 Incorrect Ratio P0734 Gear 4 Incorrect Ratio P0735 Gear 5 Incorrect Ratio P0736 Reverse Incorrect Ratio P0737 TCM Engine Speed Output Circuit P0739 TCM Engine Speed Output Circuit Low P0739 TCM Engine Speed Output Circuit High P0740 Torque Converter Clutch Circuit P0741 Torque Converter Clutch Circuit Performance or Stuck Off P0742 Torque Converter Clutch Circuit Stuck On P0743 Torque Converter Clutch Circuit Electrical P0744 Torque Converter Clutch Circuit Intermittent P0745 Pressure Control Solenoid "A" P0746 Pressure Control Solenoid "A" Performance or Stuck Off P0747 Pressure Control Solenoid "A" Stuck On P0748 Pressure Control Solenoid "A" Electrical P0749 Pressure Control Solenoid "A" Intermittent P0750 Shift Solenoid "A" P0751 Shift Solenoid "A" Performance or Stuck Off P0752 Shift Solenoid "A" Stuck On P0753 Shift Solenoid "A" Electrical P0754 Shift Solenoid "A" Intermittent P0755 Shift Solenoid "B" P0756 Shift Solenoid "B" Performance or Stuck Off P0757 Shift Solenoid "B" Stuck On P0758 Shift Solenoid "B" Electrical

Page 38

MB ME Code Description

P0759 Shift Solenoid "B" Intermittent P0760 Shift Solenoid "C" P0761 Shift Solenoid "C" Performance or Stuck Off P0762 Shift Solenoid "C" Stuck On P0763 Shift Solenoid "C" Electrical P0764 Shift Solenoid "C" Intermittent P0765 Shift Solenoid "D" P0766 Shift Solenoid "D" Performance or Stuck Off P0767 Shift Solenoid "D" Stuck On P0768 Shift Solenoid "D" Electrical P0769 Shift Solenoid "D" Intermittent P0770 Shift Solenoid "E" P0771 Shift Solenoid "E" Performance or Stuck Off P0772 Shift Solenoid "E" Stuck On P0773 Shift Solenoid "E" Electrical P0774 Shift Solenoid "E" Intermittent P0775 Pressure Control Solenoid "B" P0776 Pressure Control Solenoid "B" Performance or Stuck off P0777 Pressure Control Solenoid "B" Stuck On P0778 Pressure Control Solenoid "B" Electrical P0779 Pressure Control Solenoid "B" Intermittent P0780 Shift P0781 1-2 Shift P0782 2-3 Shift P0783 3-4 Shift P0784 4-5 Shift P0785 Shift/Timing Solenoid P0786 Shift/Timing Solenoid Range/Performance P0787 Shift/Timing Solenoid Low P0788 Shift/Timing Solenoid High P0789 Shift/Timing Solenoid Intermittent P0790 Normal/Performance Switch Circuit P0791 Intermediate Shaft Speed Sensor Circuit P0792 Intermediate Shaft Speed Sensor Circuit Range/Performance P0793 Intermediate Shaft Speed Sensor Circuit No Signal P0794 Intermediate Shaft Speed Sensor Circuit Intermittent P0795 Pressure Control Solenoid "C" P0796 Pressure Control Solenoid "C" Performance or Stuck off P0797 Pressure Control Solenoid "C" Stuck On P0798 Pressure Control Solenoid "C" Electrical P0799 Pressure Control Solenoid "C" Intermittent

P08XX Transmission

P0801

P0802 Resonance Intake Manifold Switchover Valve Circuit

P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit P0805 Clutch Position Sensor Circuit

P0805 Air-flap recirculation signal output stage incorrect

P0806 Clutch Position Sensor Circuit Range/Performance

P0806 A/C compressor output stage, magnetic combination

P0807 Clutch Position Sensor Circuit Low P0808 Clutch Position Sensor Circuit High P0809

P0809 Variation in angle of camshaft to crankshaft incorrect

Reverse Inhibit Control Circuit/Electric-Suction type fan (engine AAC) connector M4/3.

Clutch Position Sensor Circuit Intermittent/Angular deviation between cam and crankshaft

Page 39

MB ME Code Description

P0810 Clutch Position Control Error P0811 Excessive Clutch Slippage

P0811 CAN problem - No reception from EZS (Ignition Lock)

P0812 Reverse Input Circuit P0813 Reverse Output Circuit P0814 Transmission Range Display Circuit P0815 Upshift Switch Circuit P0816 Downshift Switch Circuit

P0816 Oil pressure sensor open circuit or short circuit, malfunction

P0817 Starter Disable Circuit P0818 Driveline Disconnect Switch Input Circuit P0820 Gear Lever X-Y Position Sensor Circuit P0821 Gear Lever X Position Circuit P0822 Gear Lever Y Position Circuit P0823 Gear Lever X Position Circuit Intermittent P0824 Gear Lever Y Position Circuit Intermittent P0825 Gear Lever Push-Pull Switch (Shift Anticipate) P0830 Clutch Pedal Switch "A" Circuit P0831 Clutch Pedal Switch "A" Circuit Low P0832 Clutch Pedal Switch "A" Circuit High P0833 Clutch Pedal Switch "B" Circuit P0834 Clutch Pedal Switch "B" Circuit Low P0835 Clutch Pedal Switch "B" Circuit High P0836 Four Wheel Drive (4WD) Switch Circuit P0837 Four Wheel Drive (4WD) Switch Circuit Range/Performance P0838 Four Wheel Drive (4WD) Switch Circuit Low P0839 Four Wheel Drive (4WD) Switch Circuit High P0840 Transmission Fluid Pressure Sensor/Switch "A" Circuit P0841 Transmission Fluid Pressure Sensor/Switch "A" Circuit Range/Performance P0842 Transmission Fluid Pressure Sensor/Switch "A" Circuit Low P0843 Transmission Fluid Pressure Sensor/Switch "A" Circuit High P0844 Transmission Fluid Pressure Sensor/Switch "A" Circuit Intermittent P0845 Transmission Fluid Pressure Sensor/Switch "B" Circuit P0846 Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance P0847 Transmission Fluid Pressure Sensor/Switch "B" Circuit Low P0848 Transmission Fluid Pressure Sensor/Switch "B" Circuit High P0849 Transmission Fluid Pressure Sensor/Switch "B" Circuit Intermittent

P09XX Transmission

None defined at this time.

P1XXX Mercedes Benz Manufacturer Specific Codes P10XX Fuel and Air Metering and Auxiliary Emission Controls

P1031 O2 sensor (G3/3 and G3/4) connections reversed

P11XX Fuel and Air Metering

P1146 Mass air flow circuit malfunction - Bank 2 (left) P1147 ECT circuit malfunction - Bank 2 (left) P1148 IAT circuit malfunction - Bank 2 (left) P1149 MAP circuit malfunction - Bank 2 (left) P1162 Throttle position sensor circuit failure - Bank 2 (left) P1163 Oil level switch. P1176 Oil pressure sensor open circuit or short circuit, malfunction. P1177 Oil sensor, temperature incorrect. P1178 Oil sensor, engine oil level incorrect. P1179 Oil sensor, engine oil quality incorrect.

Page 40

MB ME Code Description

P1180 Oil sensor, engine oil temperature too high P1181 Engine electric-fan /Air conditioning malfunction P1182 Starting system relay in fuse and relay module box P1183 Right cylinders bank cut-off output stage malfunction P1184 Left cylinders bank cut-off output stage malfunction P1185 Water in engine oil, Oil sensor P1186 Fuel safety shut-off recognized.

P12XX Fuel and Air Metering

P1225 Resonance intake manifold switchover valve circuit P1233 Throttle Valve Actuator - Mechanically jammed P1235 Air-flap recirculated signal output stage faulty P1236 A/C compressor output stage, magnetic combination incorrect

P13XX Ignition System or Misfire

P1300 CKP sensor circuit failure - Bank 2 (left) P1384 Knock sensor circuit malfunction - Left front. P1385 Knock sensor circuit malfunction - Left rear. P1386 Knock sensor control from electronic control module - at limit P1397 CMP sensor circuit range/performance - Bank 2 (left)

P14XX Auxiliary Emission Controls

P1400 EGR (exhaust gas recirculation) output stage faulty P1420 Air-pump switchover valve circuit P1443 EVAP system malfunction - Bank 2 (left) P1453 Air-pump relay, relay module, fuse or circuit P1463 Left AIR system malfunction P1490 EVAP system purge control valve circuit malfunction - Bank 2 (left) P1491 A/C system refrigerant pressure too high P1492 Exhaust-flap faulty

P15XX Vehicle Speed, Idle Control, and Auxiliary Inputs

P1519 Right or sole adjustable camshaft timing solenoid mechanically faulty. P1522 Left adjustable camshaft timing solenoid mechanically faulty. P1525 Right or sole adjustable camshaft timing solenoid electrically faulty P1533 Left adjustable camshaft timing solenoid electrically faulty P1542 Pedal position sensor signal P1570 CAN bus signal from DAS to the ME-SFI control unit - DAS locked, signal interrupted, mismatched ECMs. P1580 Right or sole EA/CC/ISC Actuator circuit faulty P1581 Left EA/CC/ISC Actuator circuit faulty P1584 Stop lamp switch/Brake switch signal P1587 Left engine control module voltage supply faulty. P1588 CAN bus signal from the RCL controller to the Left engine controller faulty. P1589 Knock sensor control from the left engine controller at limit.

P16XX Computer and Auxiliary Outputs

P1603 CAN bus problem. No data reception from EIS P1605 CAN fault. ABS speed sensor error vs. VSS (RPM) P1632 Left engine control module faulty. P1641 Right of left CTP signal to the engine control module faulty or CAN bus communication by the left engine control

has been interrupted. P1642 Engine control module incorrect coding (MT coded has AT) P1643 Engine control module incorrect coding or CAN signal from Transmission system faulty. P1644 Transmission control module, voltage too low. Transmission control system version cannot be checked.

P17XX Transmission

P1747 CAN signal from ETC. CAN signal failure from ETC or instrument cluster faulty.

Page 41

Diagnostic Module (DM) - Analog

Models Model Years

124.034 124.036 1992-1993

124.028 124.032 124.052 124.092 1994-95

119.067 1992-1994

140.032 140.042 140.043 140.051 1992-1994

140.057 140.076 1992-1995

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Oxygen sensor faulty - Bank 1 Sensor 1 3 Lambda control out of range - Bank 1 - Air, fuel metering or ignition problem. 4 Air injection faulty - Bank 1 5 Exhaust gas recirculation (EGR) of control module faulty - Bank 1 6 Idle speed control faulty 7 Ignition system faulty - Bank 1 8 Engine coolant temperature sensor, circuit open or circuit short - Bank 1

9 Intake air temperature sensor, circuit open or circuit short - Bank 1 10 Voltage at mass air sensor too high/low - Bank 1 11 Tn-signal (rpm signal ) at control module faulty - Bank 1 12 Oxygen sensor heater, circuit open or circuit short - Bank 1 13 Camshaft position sensor signal ignition control module faulty - Bank 1 14 Intake manifold pressure at startup too low or too high - Bank 1 15 Wide open throttle (WOT) position information faulty 16 Closed throttle position (CTP) information faulty 17 Data exchange (CAN) fault between engine control module, ignition control module or electronic

accelerator/cruise control module. Bank 1 18 Adjustable camshaft timing solenoid circuit open or circuit short - Bank 1 19 Injector circuit open or circuit short or emission control system adaptation at limit - Bank 1 20 Vehicle speed signal missing 21 Purge switchover valve, circuit open or circuit short - Bank 1 22 Camshaft position sensor signal faulty - Bank 1 23 Intake manifold pressure with engine running, too low/high - Bank 1 24 Starter ring gear segments faulty or crankshaft position sensor faulty - Bank 1 25 Knock sensors or ignition control module faulty - Bank 1 26 Upshift delay switchover valve, circuit open or circuit short 27 Engine coolant temperature sensor deviation between circuit 1, and sensor circuit 2 - Bank 1 28 Engine coolant temperature sensor (engine coolant temperature change monitor) - Bank 1 34 Oxygen sensor faulty - Bank 2 Sensor 1 35 Lambda control out of range - Bank 2 - Air, fuel metering or ignition problem. 36 Air injection faulty - Bank 2 37 Exhaust gas recirculation (EGR) of control module faulty - Bank 2 38 Not used 39 Ignition system faulty - Bank 2 40 Engine coolant temperature sensor, circuit open or circuit short - Bank 2 41 Intake air temperature sensor, circuit open or circuit short - Bank 2 42 Voltage at mass air sensor too high/low - Bank 2 43 Tn-signal (rpm signal ) at control module faulty - Bank 2 44 Oxygen sensor heater, circuit open or circuit short - Bank 2 45 Camshaft position sensor signal ignition control module faulty - Bank 2 or Fuel safety shut-off electronic

accelerator or cruise control active (HFM only) 46 Intake manifold pressure at startup too low or too high - Bank 2 or Resonance intake manifold switchover

valve (HFM only)

Page 42

DTC Readout Possible Cause of Failure

47-48 Not used

49 Data exchange (CAN) fault between engine control module, ignition control module or electronic

accelerator/cruise control module. - Bank 2 or Voltage supply at engine control module <8V (HFM only) 50 Adjustable camshaft timing solenoid circuit open or circuit short - Bank 2 or Engine control module (HFM

only) 51 Injector circuit open or circuit short or emission control system adaptation at limit - Bank 2 52 Not used 53 Purge switchover valve, circuit open or circuit short - Bank 2 54 Camshaft position sensor signal faulty - Bank 2 55 Intake manifold pressure with engine running, too low/high - Bank 2 56 Starter ring gear segments faulty or crankshaft position sensor faulty - Bank 2 57 Knock sensors or ignition control module faulty - Bnak 2 58 Not used 59 Engine coolant temperature sensor deviation between circuit 1, and sensor circuit 2 - Bank 2 60 Engine coolant temperature sensor (engine coolant temperature change monitor) - Bank 2

Page 43

Diagnostic Module (DM) - Digital LH

SEE ME-SFI INJECTION FOR ALL DIAGNOSTIC CODES FROM 8/96 PRODUCTION AND LATER FOR ALL MODELS.

Engines Model Years

104 (LH-SFI) 1992 104 (124 only) 1992-95 119 120 1991-96

Stored Codes turn on the Check Engine Light (MIL) Registered or Pending Codes will keep the light on.

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

0 No fault found 2 Oxygen sensor. No signal (right bank in 120) 3 Fuel adaptation (lambda control), inoperative. Engine control module (right bank in 120) 4 Air injection defective, fault from Fuel control system (right bank in 120) 5 EGR exhaust gas recirculation incorrect, fault. Engine control module (right bank in 120) 6 Idle speed control incorrect, fault from EA/CC/ISC 7 Ignition system defective, fault from Fuel/Ignition control system (right bank in 120) 8 Coolant temperature sensor signal. Open or short circuit (right bank in 120)

9 Intake air temperature sensor signal. Open or short circuit (right bank in 120) 10 Air mass sensor voltage signal too high /low. (right bank in 120) 11 Engine speed signal TN (RPM) or Engine control module (right bank in 120) defective 12 Oxygen sensor heater circuit. Open or short circuit (right bank in 120) 13 Camshaft position sensor (CMP) signal, fault from Fuel/Ignition control system (right bank in 120) 14 Intake manifold pressure value at start too high/low, fault from Fuel/Ignition control system (right bank in 120) 15 Wide open throttle (WOT) signal incorrect/implausible. 16 Closed throttle position (CTP) sensor signal incorrect/implausible. 17 CAN communication faulty in between control units (right bank in 120). 18 Camshaft timing adjust solenoid, open or short circuit (right bank in 120) 19 Fuel injector circuit, open or short circuit or self adaptation at limit. (right bank in 120) 20 Speed signal missing 21 Fuel purge control valve, open or short circuit (right bank in 120) 22 Camshaft position sensor (CMP) signal defective (right bank in 120) 23 Intake manifold pressure sensor signal incorrect, too high/low. (right bank in 120) 24 Crankshaft position sensor (CKP) signal incorrect or starter ring gear segment damaged. 25 Knock sensors circuit or Ignition control module defective (right bank in 120) 26 Transmission Upshift delay switchover valve (Y3/3) without function (Logic Chain) 27 Engine coolant temperature (ECT) sensors circuit 1 and 2 have difference values. (right bank in 120) 28 Engine coolant sensor/Operating temperature error. (right bank in 120) 34 Oxygen sensor. No signal (left bank in 120) 35 Fuel adaptation (lambda control), inoperative. Engine control module (left bank in 120) 36 Air injection defective, fault from Fuel control system (left bank in 120) 37 EGR exhaust gas recirculation incorrect, fault. Engine control module (left bank in 120) 38 Not used 39 Ignition system defective, fault from Fuel/Ignition control system (left bank in 120) 40 Coolant temperature sensor signal. Open or short circuit (left bank in 120) 41 Intake air temperature sensor signal. Open or short circuit (left bank in 120) 42 Air mass sensor voltage signal too high /low. (left bank in 120) 43 Engine speed signal TN (RPM) or Engine control module (left bank in 120) defective 44 Oxygen sensor heater circuit. Open or short circuit (left bank in 120) 45 Camshaft position sensor (CMP) signal, fault from Fuel/Ignition control system (left bank in 120) 46 Intake manifold pressure value at start too high/low, fault from Fuel/Ignition control system (left bank in 120)

47-48 Not used.

49 CAN communication faulty in between control units (left bank in 120).

Page 44

DTC Readout Possible Cause of Failure

50 Camshaft timing adjust solenoid, open or short circuit (left bank in 120) 51 Fuel injector circuit, open or short circuit or self adaptation at limit. (left bank in 120) 52 Not used. 53 Fuel purge control valve, open or short circuit (left bank in 120) 54 Camshaft position sensor (CMP) signal defective (left bank in 120) 55 Intake manifold pressure sensor signal incorrect, too high/low. (left bank in 120) 56 Crankshaft position sensor (CKP) signal incorrect or starter ring gear segment damaged. 57 Knock sensors circuit or Ignition control module defective (left bank in 120) 58 Not used. 59 Engine coolant temperature (ECT) sensors circuit 1 and 2 have difference values. (left bank in 120) 60 Engine coolant sensor/Operating temperature error. (left bank in 120) 63 Anomalous Code (Battery Jump most likely Caused) 65 EVAP Purge Valve

Be sure to reset adaptation once the codes have been cleared from the

Diagnostic Module (see page 8).

Page 45

Diagnostic Module (DM) - Digital HFM

SEE ME-SFI INJECTION FOR ALL DIAGNOSTIC CODES FROM 8/96 PRODUCTION AND LATER FOR ALL MODELS.

Engines Model Years

104, 111 (HFM) 1994-96

Stored Codes turn on the Check Engine Light (MIL). Registered or Pending Codes will keep the light on.

Fault Code Table

OB15 MB/SAE ME Code Description

002 P0132 Oxygen sensor (G3/2) circuit high voltage 003 P0134 Oxygen sensor (G3/2) circuit no activity detected 004 P0131 Oxygen sensor (G3/2) circuit low voltage 005 P1131 Oxygen sensor (G3/2) circuit short circuit 006 P0133 Oxygen sensor (G3/2) circuit slow response 007 P0135 Oxygen sensor (G3/2) heater circuit malfunction 008 P1132 Oxygen sensor (G3/2) circuit "rich" stop 009 P0138 Oxygen sensor (G3/1) circuit high voltage 010 P0412 Secondary air injection (AIR) system switching valve/circuit malfunction

Model 202: AIR pump switchover valve (Y32) and AIR relay module (K17) Models 129, 140: AIR pump switchover valve (Y32) and electromagnetic AIR

pump clutch (Y33) 011 P0141 Oxygen sensor (G3/1) heater circuit malfunction 012 P1137 Oxygen sensor (G3/1) circuit short circuit 013 P1138 Oxygen sensor (G3/1) operating condition 015 P0411 Secondary air injection system incorrect flow detected 016 P1400 Electrical activation of the EGR switchover valve (Y27) 017 P0400 Exhaust gas recirculation flow malfunction 018 P0507 Idle control system RPM higher than expected 019 P0505 Idle control system malfunction 020 P030X Cylinder X misfire detected 021 P1342 Electrical activation of adjustable camshaft timing solenoid (Y49) 021 P0300 Random misfire detected 022 P030X Cylinder X misfire detected 023 P0300 Random misfire detected 024 P030X Cylinder X misfire detected 025 P0300 Random misfire detected 026 P0420 Catalyst system efficiency below threshold 028 P1341 Adjustable camshaft timing solenoid (Y49) without function (Logic chain) 029 P0200 Injector circuit malfunction 030 P1170 Short term fuel trim (self-adaptation of fuel mixture) 031 P0170 Fuel trim malfunction 032 P0443 Evaporative emission control system (EVAP) purge control valve circuit

malfunction (Purge switchover valve [Y58/1 ]) 032 P1701 Electrical activation of upshift delay switchover valve (Y3/3) 034 P1700 Transmission upshift delay switchover valve (Y3/3) without function (Logic chain) 035 P030X Cylinder X misfire detected 036 P0300 Random misfire detected 037 P030X Cylinder X misfire detected 038 P0300 Random misfire detected 039 P030X Cylinder X misfire detected 040 P0300 Random misfire detected 042 P1340 Camshaft position sensor monitoring signal from engine control module (N3/4) 043 P1335 Engine speed signal TNA to diagnostic module (OBD II) not received 044 P1711 Engine 104 only: Electrical activation of resonance intake manifold switchover valve (Y22/6)

Page 46

OB15 MB/SAE ME Code Description

045 P0116 Engine coolant temperature circuit range/performance problem

(Engine coolant temperature sensor [B11/3]) 046 P0125 Insufficient coolant temperature for closed loop fuel control 047 P0111 Intake air temperature circuit range/performance problem

(Intake air temperature sensor [B17]) 048 P0101 Mass or volume air flow circuit range/performance problem

(Hot film mass air flow sensor [B2/5]) 049 P0335 Crankshaft position sensor circuit malfunction 050 P1336 Crankshaft sensor signal: Magnet coding on segment 051 P0501 Vehicle speed sensor range/performance 051 P1337 Engine speed signal TNA transmitted from engine control module 052 P1740 Full load information: Load implausible 053 P1741 Full load information: Throttle valve position implausible 054 P0510 Closed throttle position switch malfunction 055 P0600 Serial communication link malfunction (CAN) 056 P0500 Vehicle speed sensor malfunction 058 P0341 Camshaft position sensor circuit range/performance

(Camshaft position sensor [L5/1]) 059 P0105 Manifold absolute pressure/barometric pressure circuit malfunction 060 P0327 Knock sensor 1 circuit low input 061 P0326 Knock sensor 1 circuit range/performance 062 P0325 Knock sensor 1 circuit malfunction 063 P1750 Battery voltage too low 064 P1443 Electrical activation of purge flow switchover valve (Y27/6) 065 P0441 EVAP incorrect purge flow 066 P1444 Pressure switchover without function (Logic chain)

Be sure to reset adaptation once the codes have been cleared from the

Diagnostic Module (see page 8).

Page 47

Base Module (BM)

Models Model Years

124.034 124.036 1992-93

129.067 1992-95

140.032 140.042 140.043 140.051 140.057 140.076 1992-95

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found

2, 3, 4 Not used

5 Maximum permissible temperature in module box exceeded 6 Electromagnetic a/c compressor clutch blocked 7 Poly v-belt slipping 8 Voltage supply for LH-SFI control module interrupted 9 Voltage supply for LH-SFI control module interrupted

10 Voltage supply for LH-SFI control module interrupted

Voltage supply for fuel injectors interrupted 11 Voltage supply for accessory equipment control module interrupted 12 Voltage supply for ABS control module, ABS/ASR control module or ASD control module interrupted

13, 14 Not used

15 Voltage supply for kickdown valve interrupted 16 Voltage supply for electromagnetic a/c compressor clutch interrupted 17 Voltage supply for module box blower motor interrupted

Page 48

Distributor Ignition (DI)

Model Model Years

124.051 1990-1995

124.034 124.036 1992-1995

129.061 129.066 1990-1995

129.067 129.076 1992-1995

140.032 1992-1993

140.042 140.043 140.051 140.057 140.070 140.076 1992-1995

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Maximum retard setting on at least one cylinder has been reached 3 Engine coolant temperature sensor faulty 4 Load sensor in EAL/AKR control module faulty 5 Knock sensors 1 and/or 2 faulty 6 Camshaft position sensor faulty 7 Knock output switch in EAL/AKR ignition control module faulty 8 Transmission overload switch does not close

9 Transmission overload switch does not open 10 Data exchange from EAL/AKR engine control module to CFI control module faulty. 11 Preference resistor faulty 12 Tn-signal is outside the tolerance range 13 Full load contact does not open. 14 Idle speed contact does not open. 15 Ignition coil 1 output from EAL/AKR ignition control module faulty 16 Ignition coil 2 output from EAL/AKR ignition control module faulty 17 Crankshaft position sensor faulty 18 Magnets for crankshaft position sensor (CKP) not recognized. 19 Ground, coding from left EZL/AKR ignition control module not present. 20 Ignition control module DTC memory faulty. 21 Load sensor in control module faulty. (Recognized with engine running)

22 -25 Not used

26 Ignition control module data exchange fault 27 LH-SFI control module data exchange fault 28 Electronic accelerator control module/idle speed control data exchange fault 34 Ignition misfire detected at cylinder 1 (104) / cylinder 1 (119) 35 Ignition misfire detected at cylinder 5 (104) / cylinder 5 (119) 36 Ignition misfire detected at cylinder 3 (104) / cylinder 4 (119) 37 Ignition misfire detected at cylinder 6 (104) / cylinder 8 (119) 38 Ignition misfire detected at cylinder 2 (104) / cylinder 6 (119) 39 Ignition misfire detected at cylinder 4 (104) / cylinder 3 (119) 40 Ignition misfire detected at cylinder 7 (119) 41 Ignition misfire detected at cylinder 2 (119)

Page 49

Cruise Control/Idle Speed Control (CC/ISC) w/o ASR

Models Model Years

124 129 140 202 1992-97

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Cruise control/idle speed control module 3 Cruise control/idle speed control actuator 4 Cruise control switch 5 Stop lamp switch 6 Starter lock-out/backup lamp switch 7 Data bus (CAN) 8 Left front axle vehicle speed sensor 9 Left rear axle vehicle speed sensor or Hall-effect speed sensor

Rear axle vehicle speed sensor from ABS control module Rear axle vehicle speed sensor from ETS/SPS control module

Incorrect CC/ISC control module installed ETS signal 10 Engine speed (RPM) signal (TNA) 11 Fuel safety shut-off to LH-SFI control module 12 Cruise control/idle speed control voltage supply

Page 50

Electronic Accelerator / Cruise Control / Idle Speed Control

(EA/CC/ISC) w/ASR

Models Model Year

124 129 140 202 1992-96

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 EA/CC/ISC control module (N4/1) or

Safety contact switch (M16/1s1) or

Stop lamp switch or

Cruise control switch or

Actual value potentiometer or

Starter lock-out/back-up lamp switch or

Engine speed signal or

Vehicle speed signal or

Closed throttle position switch or

Safety relay in EA/CC/ISC control module

3 Right EA/CC/ISC actuator (left cylinder bank) (M16/1) 4 Cruise control switch (S40) 5 Stop lamp switch (S9/1) 6 Starter lock-out/backup lamp switch 7 CAN data bus signal from EA/CC/ISC, ABS/ASR, HFM-SFI or LH-SFI (right or left) control module

faulty.

8 Left front axle vehicle speed sensor from ABS/ASR control module 9 Left rear axle vehicle speed sensor from ABS/ASR control module or in 124 chassis Hall-effect speed

sensor. 10 Engine speed signal (TN) from base module (LH-SFI) or engine control module (HFM-SFI) 11 Closed throttle recognition signal to engine control module (HFM-SFI or Left LH-SFI)

Fuel safety shut-off to engine control module (HFM-SFI or left or right LH-SFI) 12 EA/CC/ISC control module voltage supply 13 Left EA/CC/ISC actuator (right cylinder bank) or actual value potentiometer (M16/4r1 or M16/4r2) or

actuator motor (M16/4m1)or magnetic clutch (M16/4k1). 14 Closed throttle position contact switch 15 CAN data exchange with ABS/ASR control module illogical

Page 51

Electronic Automatic Transmission Control (ETC) with CFI (722.5)

Models Model Years

129 1990-1993

See 4matic and digital transmission control diagnosis beginning on page ?.

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Not used 3 Engine load signal interrupted 4 Throttle valve switch (potentiometer) interrupted 5 Engine speed (RPM) signal interrupted 6 Vehicle speed signal interrupted 7 Output fault in 5-speed automatic transmission control module or fault in control valve. 8 5-speed automatic transmission control module 9 Control valve

10 Control valve short circuit

Electronic Transmission Control 5-speed (722.5)

Models Model Years

129, 140 1990-1996

Fault Code Table

DTC Readout Possible Cause of Failure

1 No fault found 2 Engine control module (N3/4) does not match TCM 3 Transmission overload protection switch 4th/5th gear defective 4 CAN data line from EA/CC/ISC control module (N4/1) signal distorted 5 CAN data line from DI control module (N1/3) or HFM control module signal distorted 6 CAN data line signal distorted, Short or open circuit 7 Control valve block (Y3/1y2), open circuit or TCM (N15/1) defective 8 Automatic Transmission Control Module (TCM) (N15/1) defective 9 Control valve block (Y3/1y2)

10 Control valve block (Y3/1y2), short circuit

Page 52

Automatic-Engaged Four-wheel Drive (4MATIC)

Models Model Years

124.230 124.290 1990-1993

NOTE: Engine must be at idle to read and clear 4MATIC fault codes.

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 4MATIC control module

3 Brake light switch 4 Left front axle vehicle speed sensor 5 Right front axle vehicle speed sensor 6 Rear speed sensor signal 7 All 3 vehicle speed sensors 8 Over volts protection relay, front axle train valve

9 Over volts protection relay, central differential lock valve 10 Over volts protection relay, stop lamp switch, Rear axle differential lock valve 11 Steering angle sensor signal

The following faults cannot be detected by the 4MATIC controller:

< 4MATIC function indicator lamp defective. < 4MATIC MIL defective. < Oil Pressure Switch defective.

Page 53

Electronic Transmission Control (ETC) for ME-SFI

5-speed (722.6)

Models Engines Model Years

129 140 163 170 202 208 210 104 111 112 113 119 120 606 1995-99

Fault Code Table

DTC Readout Possible cause of Failure

1 No fault stored 2 1-2/4-5 shift solenoid valve circuit fault (Y3/6y3) 3 2-3 shift solenoid valve circuit fault (Y3/6y5) 4 3-4 shift solenoid valve circuit fault (Y3/6y4) 5 PWM solenoid valve (torque converter lock-up) circuit fault (Y3/6y6) 6 Pressure regulating solenoid valve circuit fault (Y3/6y1) 7 Shift pressure regulating solenoid valve circuit fault (Y3/6y2) 8 R/P lock solenoid, function defective (Y66/1)

9 Cable to starter lock-out relay module, function defective (K38/3) 10 Voltage supply to solenoid valves 11 Voltage supply to RPM sensors 12 RPM sensor 2 (Y3/6n2), signal defective 13 RPM sensor 3 (Y3/6n3), signal defective 16 Transmission output sensor (B49) defective 17 Transmission selector lever coding invalid 18 Selector lever signal incorrect (This code can be ignored.) or between ranges 19 Transmission fluid temperature sensor (Y3/6b1) signal defective 20 Starter lock-out contact (Y3/6s1) not functioning 20 Transmission oil temperature sensor defective/Starter lock-out contact not functioning 21 Supply voltage (terminal 87) too low or overvoltage. 22 CAN data: Right rear wheel speed (VSS) from traction system incorrect/implausible 23 CAN data: Left rear wheel speed (VSS) from traction system incorrect/implausible 24 CAN data: Pedal value from ME-SFI controller incorrect/implausible 24 CAN data: Right front wheel speed (VSS) from traction system incorrect/implausible 25 CAN data: Engine RPM from ME-SFI controller system incorrect/implausible 25 CAN data: Left front wheel speed (VSS) from traction system incorrect/implausible 26 CAN data: Right engine torque from ME-SFI controller system incorrect/implausible 26 CAN data: Pedal value from ME-SFI controller incorrect/implausible 27 CAN data: Altitude adjustment factor from the ME-SFI controller incorrect/implausible (This fault code can

be ignored if no relative faults stored in the ME-SFI 27 CAN data: Adjusted engine torque incorrect/implausible 28 CAN data: Left engine torque from ME-SFI controller system incorrect/implausible 28 CAN data: Engine RPM from ME-SFI controller system incorrect/implausible 29 CAN data: Right engine torque from ME-SFI controller system incorrect/implausible 30 CAN data: Communication with traction system faulty 30 CAN data: Altitude adjustment factor from the ME-SFI controller incorrect/implausible (This fault code can

be ignored if no relative faults stored in the ME-SFI 31 CAN data: Communication to the ME-SFI controller is faulty 31 CAN data: Maximum induced engine torque from ME-SFI controller incorrect/implausible 32 CAN data: Communication to/from the ME-SFI controller is faulty 32 CAN data: Left engine torque from ME-SFI controller system incorrect/implausible 33 CAN data: Communication to/from the ME-SFI controller is faulty 33 CAN data: Throttle valve actuator actual value from ME-SFI incorrect/implausible 34 CAN data: Communication to/from the ME-SFI controller is faulty 35 CAN data: Communication to/from the ME-SFI controller is faulty 36 CAN data: Communication to/from the ME-SFI controller is faulty or the engine temperature is implausible.

Page 54

DTC Readout Possible cause of Failure

37 CAN data: All communications are faulty 38 CAN data: Communication to/from the Traction system controller is faulty 39 CAN data: Communication to/from the ME-SFI controller is faulty 40 CAN data: Communication to/from the Instrument Cluster is faulty 50 Speed sensor n3 or clutch K1 are faulty 51 Gear implausible or transmission slips. 52 Command valve (6, 14, or 25) sticking under pressure. 52 Unauthorized locking of Torque Converter lock-up clutch. Replace Torque Converter. 53 Torque converter lock-up clutch, not functioning. Replace Torque Converter. 53 Torque converter lock-up clutch, input (RPM) too high. Replace Torque Converter. 54 No feedback signal from transmission overload protection. 55 Gear comparison incorrect or target gear selection not achieved.

56-65 Transmission control unit (N15/3) faulty .

98-155 These codes are intermittent. To establish their meaning, subtract 96 from the code number given

and look in the table above for the definition of the intermittent fault.

Adaptive Damping System (ADS)

Models Model Years

129.061 129.066 129.067 129.076 1991-1995

140.032 140.042 140.051 140.057 140.070 140.076 140.134 1991-1994

FAULT CODE TABLE

DTC Readout Possible Cause of Faults

1 No fault found 2 Adaptive damping system control module 3 Body acceleration sensor 4 Wheel acceleration sensor 5 Steering angle sensor 6 Front axle solenoid valves 1 7 Front axle solenoid valves 2 8 Rear axle solenoid valves 1 9 Rear axle solenoid valves 2

12 Right front axle vehicle speed signal

ABS Signal 13 Oil level switch (ADS) 14 Steering angle sensor not activated/initialized 15 Comfort or sport switch (ADS) short circuit 17 Vehicle load sensor 18 Adaptive damping system warning lamp 19 Volts supply too low 20 Steering angle sensor 21 Volts supply too high 22 Comfort or sport switch (ADS)

Page 55

Automatic Locking Differential (ASD)

Models Model Years

124.128 1991-1995

126.134 126.135 1991

129.061 1991-1995

140.134 1991-1995

201.028 1991-1993

FAULT CODE TABLE

DTC Readout Possible cause of faults

1 No fault found 2 Adaptive damping system control module 3 Stop lamp switch 4 Left front axle vehicle speed sensor signal 5 Right front axle vehicle speed sensor signal 6 Rear speed sensor signal 7 No speed signal from any sensor, missing ground 8 Adaptive damping system valve or stop lamp switch

Anti-lock Brake System (ABS)

Models Model Years

140.032 140.042 140.043 140.134 1992-1993 202 1994-1995 210 1995

FAULT CODE TABLE

DTC Readout Possible Cause of Faults

1 No faults found 2 Left front axle vehicle speed sensor, open circuit 3 Right front axle vehicle speed sensor, open circuit

4 Rear axle speed sensor signal 6 Solenoid valve, Left front axle 7 Solenoid valve, Right front axle

8 Solenoid valve, Rear axle

10 Return/pressure pump motor or return/pressure pump relay 11 Solenoid valves relay 12 Master cylinder switchover valve 13 Stop lamp switch 14 ABS Lateral acceleration sensor 15 ABS control module 16 Vehicle speed sensors incorrect, dirty or damaged toothed rotor 17 Low voltage at solenoid valves relay 25 Left front vehicle speed sensors signal Illogical 26 Right front vehicle speed sensors signal Illogical 27 Rear axle vehicle speed sensors signal Illogical

Page 56

Anti-lock Brake System (ABS & ABS w/ASR)

Models Model Years

124.034 124.036 1992-1995 129 1994-95 140 1994-95

FAULT CODE TABLE

DTC Readout Possible Cause of Faults

1 No fault found

2 Left front axle vehicle speed sensor, open circuit

3 Right front axle vehicle speed sensor, open circuit

4 Left rear axle vehicle speed sensor signal or Rear axle speed sensor, open circuit

5 Right rear axle vehicle speed sensor signal

6 Left front axle solenoid valve

7 Right front axle solenoid valve

8 Left rear axle solenoid valve or rear axle solenoid valve

9 Right rear axle solenoid valve

10 Return/pressure pump motor or return/pressure pump relay 11 Solenoid valves relay 12 Master cylinder switchover valve - Models 140.04/05 13 Brake lamp switch (ASD/ASR) 14 Lateral acceleration sensor - Models 140.04/05 15 ABS/ASR control module 16 Vehicle speed sensors incorrect, dirty or damaged toothed rotor 17 Low volts at solenoid valves relay 20 Switchover or solenoid valve 21 Pressure switch charge 22 Pressure switch charge 23 Pressure switch hydraulic system 24 ASR charging pump 25 Left front vehicle speed sensors signal, Illogical 26 Right front vehicle speed sensors signal, Illogical 27 Rear axle vehicle speed sensors signal, Illogical 29 Lateral acceleration sensor signal, Illogical - Models140.04/05 30 CAN data line to electronic accelerator/cruise control/idle speed control module 31 CAN data line to LH-SFI control module left LH-SFI control module Right LH-SFI control module 32 CAN data line to left ignition control module right ignition control module Ignition control module, LH-SFI 33 CAN data line, short or open circuit

Page 57

Electronic Traction Systems (ASR, ETS)

Models Model Years

129 140 202 1995 210 1995-96

FAULT CODE TABLE

DTC Readout Possible Cause of Faults

1 No fault found

2 ASR/SPS or ETS/SPS control module

3 Left front axle VSS sensor, open circuit

4 Right front axle VSS sensor, open circuit

5 Left rear axle VSS sensor, open circuit

6 Right rear axle VSS sensor, open circuit

7 Left front axle VSS valves, illogical

8 Right front axle VSS valves illogical

9 Left rear axle VSS valve illogical

10 Right rear axle VSS valve illogical 11 VSS signal illogical 12 ASR/ETS hydraulic unit, solenoid valves relay 13 ASR/ETS hydraulic unit, Left front axle solenoid valves(hold) 14 ASR/ETS hydraulic unit, Left front axle solenoid valve(hold) 15 ASR/ETS hydraulic unit, right front axle solenoid valve (release) 16 ASR/ETS hydraulic unit, right front axle solenoid valve (release) 17 ASR/ETS hydraulic unit, left rear axle solenoid valve(hold) 18 ASR/ETS hydraulic unit, left rear axle solenoid valve (release) 19 ASR/ETS hydraulic unit, right rear axle solenoid valve(hold) 20 ASR/ETS hydraulic unit, right rear axle solenoid valve (release) 21 ASR/ETS hydraulic unit, switchover/solenoid valve 22 ASR/ETS hydraulic unit, inlet solenoid valve 23 ASR only: ASR system pressure too low 24 ASR/ETS hydraulic unit, high-pressure/return pump relay 27 Stop lamp switch 28 Battery voltage too low, circuit 87 29 ETS only Circuit 30, volts supply 30 ASR only CAN date bus to EA/CC/ISC control module, interrupted 31 ASR only CAN communication with LH-SFI control module Left LH-SFI control module right LH-SFI

control module faulty CAN communication with engine control module faulty 32 ASR only CAN communication with DI or left and right DI control module, faulty 33 ASR only CAN communication faulty in general 34 ETS only Brakes overheated 35 Model 129.076,140.04/05/07 Master brake cylinder switchover valve 36 Model 129.076,140.04/05/07 ASR lateral acceleration sensor, open circuit 37 Model 129.076,140.04/05/07 ASR lateral acceleration sensor, illogical 38 ETS only EST/SPS control module not identify the software (not coded) 39 Model 140/210 ETS/SPS or ASR/SPS control module 40 Model 140 SPS P-valve 41 Model 140/210 ASR/SPS or ETS/SPS control module

Page 58

Speed Sensitive Power Steering (SPS)

Models Model Years

140.032 140.042 140.051 140.057 140.070 140.076 140.134 1992-5/93

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Speed sensitive power steering control module 3 Left/center rear axle speed sensor signal 4 Right rear axle vehicle speed sensor signal 5 Diffident vehicle speed signals from right and left rear axle sensor 6 No vehicle speed sensor signal 7 Inductive speed sensor, transmission faulty 8 Short circuit between positive connection of speed sensitive power steering valve and ground (-)

9 Short circuit at speed sensitive power steering valve 10 Open circuit at speed sensitive power steering valve 11 Volts supply at speed sensitive power steering control module

Speed Sensitive Power Steering (SPS)

Model Model Years

140 6/93-8/95

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found

2 Speed sensitive power steering control module

3 Comparison of axle vehicle speed signal attars/left front axle vehicle speed signal faulty

4 Axle vehicle speed signal status missing

5 Speed-sensitive power steering control module

6 Speed-sensitive power steering P-valve; short circuit

7 Speed-sensitive power steering P-valve; open circuit

8 Short circuit between speed sensitive power steering P-valve (+) and ground (-)

Page 59

Electronic Traction Systems (ABS, ASR, ETS, SPS)

Model Model Years

129, 140, 202 9/95-2000 210 6/96-2000

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

C1000 ESP/SPS/Traction control module (N47-5) C1010 Battery voltage too low, circuit 87 C1011 ASR/ETS/ESP hydraulic unit solenoid valve voltage supply, open/short circuit, Voltage supply C1012 Battery voltage too high, circuit 87 C1020 CAN communication faulty, general. C1021 CAN communication with EA/CC/ISC control module, interrupted. C1022 CAN communication with engine control module (right)(ME-SFI, N3/12), interrupted. C1023 CAN communication with engine control module (left)(ME-SFI, N3/11), interrupted. C1024 CAN communication with transmission control module (N15/3), interrupted C1100 Left front axle VSS sensor (L6/1), open circuit, loose contact or signal out of range C1101 Right front axle VSS sensor (L6/2), open circuit, loose contact or signal out of range C1102 Left rear axle VSS sensor (ETS/EPS/SPS/ASR L6/3, ABS L6), open circuit, loose contact or signal out of

range

C1103 Right rear axle VSS sensor (L6/4), open circuit, loose contact or signal out of range C1104 Left front axle VSS sensor (L6/1), signal out of range. C1105 Right front axle VSS sensor (L6/2), signal out of range. C1106 Left rear or rear axle VSS sensor (ETS/ASR L6/3, ABS L6), signal out of range. C1107 Right rear axle VSS sensor (L6/4), signal out of range. C1120 ESP yaw sensor (N64) signal wire or reference wire, open/short circuit C1140 Steering angle sensor (N49), open/short circuit or initialization not performed. C1141 ESP brake pressure sensor (B34) C1142 ABS lateral acceleration sensor (B24/2), open/short circuit C1143 ABS lateral acceleration sensor (B24/2), signal out of range. C1200 Stop lamp switch (S9/1), open/short circuit or Stop lamp switch (S9/1), signal out of range. C1300 ASR/ETS/ESP hydraulic unit, left front axle solenoid valve (hold) (A7/3y6), short/open sircuit. C1301 ASR/ETS/ESP hydraulic unit, left front axle solenoid valve (release) (A7/3y7), short/open sircuit. C1302 ASR/ETS/ESP hydraulic unit, right front axle solenoid valve (hold) (A7/3y8), short/open sircuit. C1303 ASR/ETS/ESP hydraulic unit, right front axle solenoid valve (release) (A7/3y9), short/open sircuit. C1304 ASR/ETS/ESP hydraulic unit, left rear axle solenoid valve (hold) (A7/3y10), short/open sircuit. C1305 ASR/ETS/ESP hydraulic unit, left rear axle solenoid valve (release) (A7/3y11), short/open sircuit. C1306 ASR/ETS/ESP hydraulic unit, right rear axle solenoid valve (hold) (A7/3y12), short/open sircuit. C1307 ASR/ETS/ESP hydraulic unit, right rear axle solenoid valve (release) (A7/3y13), short/open sircuit. C1308 ASR/ETS/ESP hydraulic unit, front axle precharge solenoid valve (A7/3y16), short/open sircuit.

C1309 ASR/ETS/ESP hydraulic unit, rear axle precharge solenoid valve (A7/3y17), short/open sircuit. C1310 ASR/ETS/ESP hydraulic unit, front axle switchover valve (A7/3y18), short/open sircuit. C1311 ASR/ETS/ESP hydraulic unit, rear axle switchover valve (A7/3y19) or ASR/ETS Switchover solenoid (A7/3y5),

short/open sircuit.

C1312 Master brake cylinder switchover valve (Y61). C1313 ASR/ETS/ESP hydraulic unit, solenoid valve relay (A7/3k1). C1314 ASR/ETS hydraulic unit, solenoid valve relay (A7/3k1), voltage supply. C1315 ASR/ETS hydraulic unit, inlet solenoid valve (A7/3y15), voltage supply. C1400 ASR/ESP charging pump (M15), open/short circuit.

Page 60

DTC Readout Possible Cause of Failure

C1401 ASR/ETS/ESP hydraulic unit, high-pressure/return pump (A7/3m1), open/short circuit or does not turn off. C1500 Vehicle Speed Sensor (VSS) (L6/1, L6/2, L6/3, L6/4) signal out of range.

C1501 SPS P-valve (Y10) C1503 Pressure transfer piston unit. - Check condition of rear brake pads and Pressure transfer piston unit. C1504 System turned off, Steering angle sensor (N49) not initialized or Low voltage to ESP yaw rate sensor (N64)

C1511 ETS/SPS control module (N47-2), not version coded C1512 Brakes overheated - Brakes were momentarily overloaded, erase DTC. C1513 ASR/SPS (N47-1) or ME-SFI (N3/10) engine control module, version coding incorrect. C1514 SPS P-valve (Y10) adjustment data C1515 Version coding SPS C1600 Temperature after engine turned off, too high.

Page 61

Cabriolet Soft Top (CST)

Model Model Years

124.066 1993-95

Connect wires of Scanner as follows

Scanner Data Link Connector

Yellow Power Soft top test connection (4 pole) at Socket 2. The connection is located at the right front passenger

footwell. To avoid the need for an extension cable, connect the black lead of code scanner to any good ground and red lead to a battery + source inside vehicle.

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found

2 Volts low

3 Normal operating time exceeded

4 Limit switch signals Illogical

5 Soft top compartment cover "locked", limit switch,

6 Soft top compartment cover "closed", limit switch,

7 Soft top compartment cover "open", limit switch

8 Soft top fabric bow "locked", limit switch

9 Soft top fabric bow "down", limit switch 10 Soft top fabric bow "raised", limit switch 11 Left front soft top "locked", limit switch 12 Right front soft top "locked", limit switch 13 Soft top "open" switch (soft top in storage compartment), limit switch , 14 Soft top "overhead", limit switch 15 Soft top "retracted", limit switch 16 Roll bar "extended", limit switch, 17 Automatic deployment of roll bar has occurred 18 Power soft top switch 19 Vehicle speed signal 20 Circuit in power soft top control module, solenoid valve, roll bar retracted 21 Circuit hydraulic unit, circuit solenoid valve, roll bar retracted 22 Circuit in power soft top control module, solenoid valve, roll bar extended 23 Circuit solenoid valve, roll bar extended 24 Circuit in power soft top control module, Power windows

Roll Bar (RB) for CST

Model Model Year

124.066 1993-95

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No faults found

2 Roll bar control module

3 Roll bar control module volts supply

6 Roll bar deployment solenoid, open circuit, short circuit to Battery + or ground (-).

7 Rear axle switch, short circuit to Battery + or ground (-).

8 Roll bar indicator lamp faulty

Page 62

Roadster Soft Top (RST)

Models Model Years

129.061 129.066 129.067 129.076 1990-12/93

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No faults stored

2 Limit switch, left locked, soft top storage compartment cover

3 Limit switch, right locked, soft top storage compartment cover

4 Limit switch, left closed, soft top storage compartment cover

5 Limit switch, right closed, soft top storage compartment cover

6 Limit switch, left locked, soft top fabric bow

7 Limit switch, right locked, soft top fabric bow

8 Limit switch, left closed, soft top fabric bow

9 Limit switch, right closed, soft top fabric bow 10 Limit switch, left front locked, soft top 11 Limit switch, right front locked, soft top 12 Limit switch soft top storage compartment cover open 13 Limit switch soft top fabric bow raised 14 Limit switch soft top down (in storage compartment) 15 Limit switch soft top up (secondary closing speed ) 16 Limit switch roll bar retracted 17 Limit switch left side window down Circuit in power soft top control module, solenoid valve, roll bar

retracted 18 Limit switch right side window down Circuit hydraulic unit, circuit solenoid valve, roll bar retracted 19 Axle vehicle speed signal illogical Circuit in power soft top control module, solenoid valve, roll bar

extended 20 Hardtop installed recognition Circuit solenoid valve, roll bar extended 21 Power soft top switch Circuit in power soft top control module, Power windows 22 Roll bar switch 23 Roll bar control module 24 Roll bar crash deployment 25 Limit switch signals illogical 26 Operation time exceeded 27 Insufficient volts 28 No speedometer signal 29 No axle vehicle wheel speed sensor signal 30 Soft top operation blocked

Page 63

Roadster Soft Top (RST)

Model Model Years

129 1/94-6/96

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No faults stored 2 Low voltage 3 RST/RB hydraulic unit locked up. 4 Vehicle speed sensor fault 5 RST/RB hydraulic unit 6 Right or left power window activation 7 Right or left front soft top “locked” switch fault, Soft top open/closed switch, Fabric bow locked switch, 8 Power soft top control module defective

9 Roll bar crash deployment has occurred 10 Power soft top switch or Roll bar switch. 11 Power soft top switch indicator lamp or Roll bar switch indicator lamp or Warning buzzer.

Roll Bar (RB) for RST

Models Model Years

129.061 129.066 129.067 129.076 1990-12/93

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No faults found

2 Roll bar control module

3 Volts supply

4 Driver seat belt lock relay open circuit or short circuit to Battery + or ground (-).

5 Passenger seat belt lock relay open circuit or short circuit to Battery + or ground (-).

6 Roll bar deployment solenoid, open circuit or short circuit to Battery + or ground (-).

7 Left and/or right axle switch, roll bar, short circuit to 30 or 31

8 Roll bar warning lamp

9 SRS warning lamp and/or code scanner button held to erase faulty 10 SRS control unit

Page 64

Infrared Remote Control for Central Locking (IRCL)

Models Model Years

129.061 129.066 129.067 129.076 1990-1993

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found

2 Infrared remote control module

3 Supply pump, central locking system short to ground

4 Infrared remote control receiver, Left front door/Right front door/Trunk lid Red indicator lamps, short to

ground

5 Infrared remote control receiver, Left front door/Right front door/Trunk lid Green indicator lamps, short

to ground 6 Supply pump, central locking system, short to circuit 30 7 Infrared remote control receiver, Left front door/Right front door/Trunk lid Red indicator lamps, short to

circuit 30 or open circuit 8 Infrared remote control receiver, Left front door/Right front door/Trunk lid Green indicator lamps, in

receiver have short to short to circuit 30 or open circuit 9 Driver door switch group wiring, short to circuit 30 ATA/convenience microswitch wiring short to circuit

30 ATA/convenience microswitch wiring short to circuit 30

10 Ignition/starter switch-position recognition switch, open circuit 11 Ignition/starter switch-position recognition switch, open circuit 31 12 Left front door actuator, open circuit 13 Right door actuator, open circuit 14 Trunk lid lock actuator, open circuit

Infrared Remote Control for Central Locking (IRCL)

Model Model Years

140 1992-96

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Left front door actuator, open circuit

3 Warning buzzer -open circuit

4 Warning buzzer -open circuit to ground 5 Red indicator lamps, short to ground 6 Green indicator lamps, short to ground 7 Short to positive, lock circuit 1 8 Short to positive, lock circuit 2 9 Red indicator lamps, short to positive

10 Green indicator lamps, short to positive 11 Infrared remote control module faulty 12 Immobilization output, short to circuit 30 (Battery +)

Page 65

Infrared Remote Control for Central Locking (IRCL)

Model Model Years

129 1993-96

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 IRCL control module

3 Supply pump, central locking system short to ground

4 Infrared remote control receiver, Left front door/Right front door/Trunk lid Red indicator lamps, short to

ground 5 Infrared remote control receiver, Left front door/Right front door/Trunk lid Green indicator lamps, short

to ground 6 Supply pump, central locking system, short to B (+) 7 Infrared remote control receiver, Left front door/Right front door/Trunk lid Red indicator lamps , short to

B (+) or open circuit 8 Infrared remote control receiver, Left front door/Right front door/Trunk lid Green indicator lamps, short

to B (+) or open circuit 9 Driver door switch group wiring, short to B (+) ATA/CF microswitch wiring short to B (+) ATA/CF

microswitch wiring short to B (+)

Pneumatic Systems Equipment (PSE)

Models Model Years

129 140 1992-94

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Central locking system, air demand too high, leakage 3 Retractable trunk lid grip, air demand too high, leakage 4 Backup assist, air demand too high, leakage 5 Orthopedic backrest pressure, air demand too high, leakage 6 Manifold vacuum assist, air demand too high, leakage 7 Short to positive, lock circuit 1 8 Short to positive, lock circuit 2 9 Signal fault, Rear head restraint retraction

10 Signal fault, Central locking interior control switch 11 Signal fault, Front door 12 Signal from lock circuit 1 is present for longer than 2 minutes 13 Signal from lock circuit 2 is present for longer than 2 minutes, 14 Central locking interior control switch signal is present for longer than 2 minutes 15 Rear head restraint retraction signal is present for longer than 2 minutes 16 Not used

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17 Pneumatic control module faulty

Anti-theft Alarm System(ATA)

Models Model Years

129.061 129.066 129.067 129.076 1990-93

140.032 140.042 140.051 140.057 140.070 140.076 140.134 1990-93 129 140 202 1994-96

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 Alarm activated, trunk sensor circuit 3 Alarm activated, engine hood circuit 4 Alarm triggered, glove compartment 5 Alarm activated, rear door circuit Console compartment circuit 6 Alarm activated, front door circuit

10 Alarm activated, radio circuit 12 Alarm activated, ignition circuit 14 Alarm activated, brake circuit 19 AT Control module faulty 20 Left front door actuator, No ground connection 21 ATA disarmed, Starter lock-out relay module. short to circuit 30 23 ATA armed, Open to circuit 30

Cellular Telephone (CT)

Models Model Years

129.061 129.066 129.067 129.076 1992-95

140.032 140.042 140.051 140.057 140.070 140.076 140.134 1992-95

If a fault code is set, the code is shown on the in-car telephones display and the phone goes off-line.

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 TR memory defect (ROM) 2 TR memory defect (RAM) 3 NAM defect 4 ESN defect 5 TR memory defect (EE PROM) 6 TR output power defect 7 IDCM defect 8 TR output power control defect

Page 67

Convenience Features (CF)

Model Model Year

140 1992-96

FAULT CODE TABLE

DTC Possible Cause of Failure

1 No fault found 2 Control module, Close circuit for left front power window motor 3 Control module, Open circuit for left front power window motor 4 Control module, Close circuit for right front power window motor 5 Control module, Open circuit for right front power window motor 6 Control module, Close circuit for left rear power window motor 7 Control module, Open circuit for left rear front power window motor 8 Control module, Close circuit for right rear power window motor

9 Control module, Open circuit for right rear power window motor 10 Switch for left front power window Closing time exceeded 11 Switch for left front power window Opening time exceeded 12 Switch for right front power window Closing time exceeded 13 Switch for right front power window Opening time exceeded 14 Left rear power window circuit and left rear power window switch front console closing time exceeded 15 Left rear power window circuit and left rear power window switch front console opening time exceeded 16 Right rear power window circuit and right rear power window switch front console closing time exceeded 17 Right rear power window circuit and right rear power window switch front console opening time exceeded 18 Circuit for left front lock switch, right front, trunk lid lock switch closing time exceeded, lock switch circuit 2 19 Circuit for left front lock switch, right front, trunk lid lock switch opening time exceeded, lock switch circuit 1 20 Left front power window switch short to ground or wires reversed 21 Right front power window switch short to ground or wires reversed 22 Left rear window circuit and left rear power window switch front console short to ground or wires reversed 23 Right rear power window circuit and right rear power window switch front console short to ground or wires reversed 24 Left front power window motor , wiring or speed sensor 25 Right front power window motor, wiring or speed sensor 26 Left rear power window motor, wiring or speed sensor 27 Right rear power window motor, wiring or speed sensor 28 Left front power window motor, sensor wiring reversed 29 Right front power window motor, sensor wiring reversed 30 Left rear power window motor, sensor wiring reversed 31 Right rear power window motor, sensor wiring reversed 32 Left front power window motor, Speed sensor signal faulty 33 Right front power window motor, Speed sensor signal faulty 34 Left rear power window motor, Speed sensor signal faulty 35 Right rear power window motor, Speed sensor signal faulty 36 Convenience control module faulty 37 Volts too low(9V), circuit 30E fuse F4-11 38 Sliding/pop-up roof switch circuit short, check wiring harness 39 Volts supply circuit 30 A, control module 40 Volts supply circuit 30 B, control module

Page 68

Supplemental Restraint System (SRS) - Analog-

Models Model Years

107 124 126 129 201 140 1988-1993

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 SRS Control unit self test failure 3 Driver Airbag squib (Firing charge circuit) 4 Front passenger Airbag squib 5 Driver seat beat buckle switch (ETR,) 6 Front passenger seat belt buckle switch (ETR) 7 Front passenger Airbag resistor 8 Voltage supply interrupted (Circuit 15R) 9 SRS Warning Lamp (with flashing SRS warning lamp Impulse counter scan tool button held too little

time to read out the DTC memory or too long to erase DTC codes. Reread codes.)

10 SRS Control unit activated - Replace (1990 and later switch to next circuit if used 3 times replace)

Supplemental Restraint System (SRS) BAE, ZAE - Digital

Models Model Years

129 140 124 1994-95 202 210 From beginning of manufacture -1995

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 SRS Control unit 2 SRS Driver air bag squib 3 Left front ETR squib 4 Right front ETR squib

5 Model 140R12/8Front passenger airbag squib 1 17 Low volts, Voltage supply circuit 15R 19 SRS indicator lamp. failure 20 Front passenger seat occupation signal (currently not used) 24 Driver seat belt buckle switch (Airbag/ETR) 25 Front passenger seat belt buckle switch (ETR) 73 Squib short circuit

Page 69

Supplemental Restraint System (SRS) w/Side Airbags - Digital

Models Model Years

129 (R) 140 (S) 202 (C) 210 (E) 1996-99

FAULT CODE TABLE

000

DTC 1

1 1 SRS control module failed self test (N2/2) 2.0 2 4 Driver Airbag ignitor (R12/3) 3.0, 4.0 3 5 Left front seat belt ignitor (ETR) (R12/1) 5.0, 6.0 4 6 Right front seat belt ignitor (ETR) (12/2) 7.0, 8.0 5 7 Front passenger Airbag ignitor (R12/8) 9. 0, 10. 0 8 8 Left side door Airbag ignitor (R12/9) 15.0, 16.0 9 9 Right side door Airbag ignitor (R12/10) 17.0, 18.0

10 4-9, 16, 17,

17 3 Voltage supply (low voltage) Circuit 15R 1.0 19 2 SRS indicator lamp circuit failure (A1e15) 11.0 20 25 Front passenger seat occupied recognition sensor (B41/1) or

10 26 Programming does not comply with vehicle version 31.0, verify vehicle version, repeat

24 (USA) 16 Left front seat belt buckle micro-switch 12.0 25 (USA) 17 Right front seat belt buckle micro-switch 13.0

73 Ignitors are short circuited to each other. 14.0

001

DTC 2

26, 29, 34

18 Left side Airbag harness fault. (A53) 16.0 19 Left side Airbag sensor defective. (A53) Replace sensor 20 Left side Airbag sensor defective. (A53) Replace sensor 21 Right side Airbag harness fault. (A54) 18.0 22 Right side Airbag sensor defective. (A54) Replace sensor 23 Right side Airbag sensor defective. (A54) Replace sensor 27 Front passenger seat occupied recognition with automatic

28 Front passenger seat occupied recognition with automatic

31 Front passenger seat occupied recognition with automatic

32 Left side Airbag communication interference (A53) Electromagnetic interference, check

33 Right side Airbag communication interference (A54) Electromagnetic interference, check

34 Digital crash output, harness fault (ARTHUR - Model 170) 35 Analog crash output, harness fault (Model 170 Kompressor)

Possible cause Test step/Remedy

(See Diag Man. B&A V5.1)

Programming does not comply with vehicle version 31.0, verify vehicle version, repeat

programming.

19.0

(B48)

programming.

20.0

child seat recognition (ACSR), communication. (B48)

Position child seat properly or replace, child seat recognition (ACSR) Improperly positioned child seat or faulty. Connection between passenger seat and child seat faulty. Metallic objects on passenger seat or child seat. Short term electromagnetic interference in immediate area such as electronic transmitters, telephones etc. (B48).

child seat recognition (ACSR) (B48)

Replace B48

harness routing if accessories installed.

Page 70

BODY CONTROL SYSTEMS (SRS, IRCL, PSE, ATA. RST, MSC, CF)

Models Model Years

129 140 124 1996-2000 202 210 1997-2000

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

B1000 Control module faulty, fails self test. B1001 Left/right front ESA control module (N32/1, N32/2) (with memory) B1001 Switch illumination, circuit 58d, wiring (short circuit) B1010 Low supply voltage, less than 9/10 Volts B1011 High supply voltage, greater than 15.5 Volts B1013 Circuit 15R voltage supply missing at circuit 15. B1014 Circuit 49 travel direction, has no voltage at circuit 15. B1015 Circuit 30C, fuse F4-7 B1017 Circuit 31B B1021 CAN data line, communication with PSE control module (A37) interrupted. B1022 Driver's seat does not communicate via CAN data line. B1023 Passenger's seat does not communicate via CAN data line. B1024 CAN data line LOW or Combination Control Module (N10-1 or N10-3), open circuit or short to B+ or ground.

B1025 CAN data line HIGH or Combination Control Module (N10-1 or N10-3), open circuit or short to B+ or ground. B1054 CAN LOW (CAN-L) communications fault with front door module.

B1055 CAN HIGH (CAN-H) communications fault with front door module. B1100 Lock Switch circuit SN1/SN2 from RCL control module (N54) to CCVM (N10-1 or N10-3), open circuit or short

to B+ or ground.

B1100 Control line deactivation, (PSE/CL, CF, ATA), short to B+ or Ground B1101 Control line for Lock nut 2/Panic alarm from RCL control module (N54) to CCM (N10) B1101 Control line activation, (PSE/CL, CF, ATA), short to B+ or Ground B1102 Left Front Door IR receiver or Drive Authorization System (DAS) control line, short to B+ or Ground B1103 Right Front door IR receiver or Red indicator lamp, short to B+ or Ground B1104 Green indicator lamp, short to B+ or Ground B1111 Backrest switch harness or Short to ground. B1112 Front head restraint adjustment and height adjustment harness or Short to ground. B1113 Rear fore/aft adjustment and height adjustment harness or Short to ground. B1114 Steering column up/down switch (S91/2s11) or Steering column in/out switch (S91/2s12) stuck/binding, or

wiring fl (short circuit)

B1115 Rear window defroster switch > 25 s, f l + B1116 RHR unlock switch (S6/1s3), signal greater than 25 sec. B1117 Interior switch (CL) (S6/1s2), signal greater than 25 sec. B1119 Outside rearview mirror vertical/horizontal/left/right adjustment (S21 s6/s7/s8) > 25 seconds. B1124 Remote trunk release switch (S15), signal > 25 sec., short to ground. B1132 Alarm triggered via glove box. B1148 Circuit 50 output, open circuit or short to B+ or ground. B1156 Left front seatback release microswitch (S91/3) or Left front hibernation microswitch (S91/1s2), circuit short

B1157 ESC Control Module (N26/5), open circuit or short to B+ or ground. B1200 Hall-sensor for fore/aft motor (M27m1) B1201 Hall-sensor for front raise/lower motor (M27m3) B1202 Hall-sensor for rear raise/lower motor (M27m2) B1203 Left front ESA motor group (with memory), head restraint raise/lower motor (M27m4) (Hall sensor defective) or

open circuit.

B1204 Left front ESA motor group (with memory), backrest fore/aft motor (M27m5) (Hall sensor defective) or open

Page 71

circuit. B1213 Electrically adjustable and heated driver-side outside rearview mirror (with memory) (M21/4) >25 seconds B1214 Electrically adjustable and heated driver-side outside rearview mirror (with memory) (M21/4) >2 seconds. B1217 Non-USA vehicles only, continue to next test step.

B1220 Not applicable for U.S. A. vehicles. B1221 Not applicable for U.S. A. vehicles. B1276 Not applicable for U.S. A. vehicles. B1277 Not applicable for U.S. A. vehicles. B1278 Not applicable for U.S. A. vehicles. B1279 Not applicable for U.S. A. vehicles. B1310 Left side airbag sensor (A53/1) B1311 Right side airbag sensor (A54/1) B1315 Front passenger seat occupied recognition with automatic child seat recognition (ACSR (B48)) B1321 Left front seat belt buckle switch (AB/ETR) (S68/3) B1322 Right front seat belt buckle switch (AB/ETR) (S68/4) B1406 Dome lamp control wire short to B+ from combination control module. (N10-1 or N10-3). B1407 Entrance/exit lamp wiring short to B+ or combination control module (N10-1) I B1407 Faulty signal from mirror postion memory (M21/7n1) (up/down) to right outside rearview mirror (M21/7) B1407 Faulty signal from mirror postion memory (M21/7n1) (right/left) to right outside rearview mirror (M21/7) B1408 Verticle adjustment motor (M21/5m1) (up/down) or Horizontal adjustment motor (M21/5m2) (in/out). B1409 Verticle adjustment motor (M21/4m1) (up/down) or Horizontal adjustment motor (M21/4m2) (in/out). B1410 Combination control module (N10-1) does not switch B1411 Combination control module (N10-1) does not switch B1435 Short circuit to ATA tow sensor. B1436 Central locking - Pneumatic demand too high or CL pneumatic system leak. Door or Fuel Door. B1437 Retractable head restraint - Pneumatic demand too high. B1438 Multi-contour seat, air pressure or safety time - Pneumatic demand too high. B1439 Manifold vacuum assist, Time > maximum - Pneumatic demand too high. B1440 Remote trunk lid release (RTR), Time > maximum - Pneumatic demand too high. B1470 B1471 B1476 SRS MIL (Lamp) (A1e15) B1497 Not applicable for U.S. A. vehicles. B1507 CAN - Communication fault with Roof Control Module (N70) B1508 CAN - Communication fault with Signal pick-up and activation module (SAM) (N10/1). B1510 Left front ESA control module (N32/1) B1521 Mirror-Horizontal adjustment motor (M21/7m2) (short circuit wiring or motor) B1521 Mirror-Vertical adjustment motor (M21/7m1) (short circuit wiring or motor) B1521 Mirror-adjustment motor (M21/7m1, M21/7m2) (short circuit wiring or motor) B1521 Mirror heater (M21/7r1) (short circuit) or Front passenger-side door control module (N69/2) B1701 Incorrect authorization code, right cylinder bank, (4 or 6 cylinder) (CAN) B1702 Incorrect authorization code, left cylinder bank, (8 or 12 cylinder) (CAN) B1703 Attempt was made to start vehicle locked via RCL or invalid transponder code. B1704 Coil for transponder (coil will not saturate), faulty coil. B1705 Activation of locking confirmation relay module (K54), turn signal system, short to B+ or Ground. B1706 Activation of locking confirmation relay module (K54) or combination relay module or turn signal system, short

to B+ or Ground. B1707 Not applicable for U.S. A. vehicles.

B1708 Not applicable for U.S. A. vehicles. B1709 Alarm siren with auxilliary battery (H3/1) not installed, not version coded or defective.

Page 72

B1710 Alarm (ATA) triggered via trunk lamp switch (S17/8) B1711 Alarm (ATA) triggered via engine hood switch (S62) B1712 Alarm (ATA) triggered via left front door switch (S17/3) B1713 Alarm (ATA) triggered via right front door switch (S17/4) B1714 Alarm (ATA) triggered via left rear door switch (S17/5) I B1715 Alarm (ATA) triggered via right rear door switch (S17/6) B1716 Reserve Alarm Input. B1718 Alarm (ATA) triggered via radio (running change during M. Y. 1996) B1719 Alarm (ATA) triggered via telephone B1720 Alarm (ATA) triggered via FAX equipment B1721 Alarm (ATA) triggered via ignition system B1722 Alarm (ATA) triggered via stop lamp switch (S9/1) B1723 Not applicable for U.S. A. vehicles. B1724 Not applicable for U.S. A. vehicles. B1725 Alarm (ATA) triggered via anti-tow protection. B1726 Circuit 30 interupted while in armed state B1727 Not applicable for U.S. A. vehicles.

B1728 Not applicable for U.S. A. vehicles. B1729 PSE Control Module combined functions, (A37) B1748 B1755 Serial interface from K2 control module interupted. B1850 Left front ESA control module (N32/1) does not communicate with front driverside door control module (N69/1)

B1851 Left front ESA control module (N32/1) does not communicate with front driverside door control module (N69/1) B1852 Left front ESA control module (N32/1) does not communicate with electronic ignition lock control module (N73) B1853 Left front ESA control module (N32/1) does not communicate with PSE control module (A37)

B1854 Left front ESA control module (N32/1) does not communicate with electronic ignition lock control module (N73) B1859 Driver airbag squib (R12/3)

B1861 Front passenger AB squib (R12/8) B1863 Driver ETR squib (R12/1) B1864 Front passenger ETR squib (R12/2) B1865 LR ETR squib (R12/6) B1866 RR ETR squib (R12/7) B1867 Left front side airbag squib (R12/20) B1868 Left rear windowbag squib (R12/22) B1869 RR side airbag squib (R12/12) B1871 Right front side airbag squib (R12/21) B1872 Right rear side airbag squib (R12/23) B1873 RR side airbag squib (R12/12) B1875 Digital crash output B1876 Analoge crash output B1878 Automatic child seat recognition warning lamp (N72e1) (AIRBAG OFF)

Page 73

Tempmatic A/C

Models Model Year

201.028 201.029 201.034 201.126 201.128 1988-93

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found 2 In car temperature sensor, short circuit 3 In car temperature sensor, open circuit 4 Outside temperature sensor, short circuit 5 Outside temperature sensor, open circuit 6 Evaporator temperature sensor, short circuit

7 Evaporator temperature sensor, open circuit 12 Coolant temperature gauge sensor, short circuit 13 Coolant temperature gauge sensor, open circuit 14 Feedback potentiometer, short circuit 15 Feedback potentiometer, open circuit 30 Coolant pump, short circuit 33 A/C compressor control module, short circuit 34 Auxiliary fan relay short circuit 50 Switchover valve unit (5 connections) between pins 5 and 4 faulty 51 Switchover valve unit (5 connections) between pins 5 and 6 faulty 52 Switchover valve unit (5 connections) between pins 5 and 2 faulty 54 Switchover valve unit (5 connections) between pins 5 and 3 faulty 55 Switchover valve unit (4 connections) between pins 5 and 1 faulty 56 Switchover valve unit (4 connections) between pins 5 and 2 faulty 57 Switchover valve unit (4 connections) between pins 5 and 1 faulty 58 Switchover valve blend air flaps (warm) short circuit 59 Switchover valve blend air flaps (cold) short circuit 60 Switchover valve blend air flaps (closes) short circuit 61 Blower switch, low speed faulty 62 Blower switch, high speed faulty

Page 74

Automatic A/C

Models Model Years

124.026 124.030 124.034 124.036 124.050 124.090 124.051 124.230 124.290 1988-95

126.024 126.025 126.035 126.039 126.045 126.134 126.135 1988-91

FAULT CODE TABLE

DTC Readout Possible Cause of Failure

1 No fault found

2 In car temperature sensor - Short circuit

3 In car temperature sensor - Open circuit

4 Outside temperature sensor - Short circuit

5 Outside temperature sensor - Open circuit

6 Evaporator temperature sensor - Short circuit

7 Evaporator temperature sensor - Open circuit

8 Left heat exchanger temperature sensor - Short circuit

or Heater core temperature sensor - Short circuit

9 Left heat exchanger sensor - Open circuit

Heater core sensor - Open circuit 10 Right heat exchanger temperature sensor - Short circuit 11 Right heat exchanger temperature sensor - Open circuit 12 Engine coolant temperature sensor - Short circuit 13 Engine coolant temperature sensor - Open circuit 30 Coolant circulation pump - Short or open circuit

31/32 Duo valve - Short or open circuit

33 A/C compressor cut-out control module - Short or open circuit 34 Auxiliary fan 2nd stage (actuation) - Short circuit 50 Switchover valve unit, faulty at between pins 5 and 8 (7 connections) 51 Switchover valve unit, faulty between pins 8 and 7 (7 connections) 52 Switchover valve unit, faulty between pins 8 and 3 (7 connections) 54 Switchover valve unit, faulty between pins 8 and 4 (7 connections) 55 Switchover valve unit, faulty between pins 8 and 6 (7 connections) 56 Switchover valve fresh air/recirculated air flaps, long stroke - Short circuit

Switchover valve unit, faulty between pins 8 and 2 (7 connections) 57 Switchover valve fresh air/recalculated air flaps, long stroke - Short circuit

Switchover valve unit, faulty between pins 8 and 1 (7 connections)

Page 75

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

TAU 2.1

READING ACTUAL VALUES

1. Remove the operating console from the TAU

2. At the upper side of the operating consol there is a display.

3. Ignition ON : Position 1

4. The fan speed selector NOT on position 1

5. The display alternates between the sensor/component number and the value of that sensor/component. Example: "OP E" : Open circuit or "CL O" : Closed circuit.

COMPONENT UNDER TEST

Number Component

02 Interior Temperature Sensor

04 Exterior Temperature Sensor

06 Evaporator Temperature Sensor

08 Left Heater Core Temperature Sensor

10 Right Heater Core Temperature Sensor

12 Engine Coolant Temperature Sensor (ECT)

14 Left Temperature Selector Wheel Setting (Degree C)

16 Right Temperature Selector Wheel Setting (Degree C)

18 Vehicle Speed Signal(km/h)

20 Soft Top OPEN : "U", Soft Top CLOSED : "O"

22 Power Supply Voltage

83 OFF/ON (Not Used)

84 Blower Motor Voltage "050" (0.5v) - "600" (6.0v)

TAU 2.1

FAULT DIAGNOSIS

1 Turn temperature selector wheel into the white area. 2 Place the air speed selector at position 0 and the air direction to "DOWN" 3 IGNITION = ON : Position 1 4 Within the next 10 sec., press the "RECIRCULATE AIR" and "REST" button simultaneously for 3 sec. 5 Press the AUTO button until all error numbers are read and recorded.

FAULT CODES - TAU 2.1

DTC Readout Description Cause

1 No DTC's Stored in System Memory. No faults

2 In-Car Temperature Sensor (B10/4) Short Circuit

3 In-Car Temperature Sensor (B10/4) Open Circuit

4 Outside Temperature Sensor (B10/5) Short Circuit

5 Outside Temperature Sensor (B10/5) Open Circuit

6 Evaporator Temperature Sensor (B10/6) Short Circuit

7 Evaporator Temperature Sensor (B10/6) Open Circuit

8 Heater Core Temperature Sensor (B10/1)) Short Circuit

9 Heater Core Temperature Sensor (B10/1) Open Circuit

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 76

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - TAU 2.1

DTC Readout Description Cause

10 Heater Core Temperature Sensor (Right) Short Circuit

11 Heater Core Temperature Sensor(Right) Open Circuit

12 Engine Coolant Temperature Sensor (B10/8) Short Circuit

13 Engine Coolant Temperature Sensor (B10/8) Open Circuit

16 Center Air Vent Control Module (N18/2r2) Short Circuit

17 Center Air Vent Control Module (N18/2r2) Open Circuit

18 Center Air Vent Feedback Potentiometer (R23/3) Short Circuit

19 Center Air Vent Feedback Potentiometer (R23/3) Open Circuit

20 Left Air Vent Control Module (N18/2r1) Short Circuit

21 Left Air Vent Control Module (N18/2r1) Open Circuit

22 Left Air Vent Feedback Potentiometer (R23/1) Short Circuit

23 Left Air Vent Feedback Potentiometer (R23/1) Open Circuit

24 Right Air Vent Control Module (N18/2r3) Short Circuit

25 Right Air Vent Control Module (N18/2r3) Open Circuit

26 Right Air Vent Feedback Potentiometer (R23/2) Short Circuit

27 Right Air Vent Feedback Potentiometer (R23/2) Open Circuit

30 Auxiliary Coolant Pump Short Circuit

31 Automatic A/C Monovalve (Left) Short Circuit

32 Automatic A/C Monovalve (Right) Short Circuit

33 A/C Compressor Signal Short Circuit

34 Auxiliary Fan Signal 2 Stage Short Circuit

35 Auxiliary Fan Signal 1 Stage Short Circuit

50 Switchover Valve Block Signal Short Circuit

70 Auxiliary Coolant Pump Open Circuit

71 Automatic A/C Monovalve (Left) Open Circuit

72 Automatic A/C Monovalve (Right) Open Circuit

73 A/C Compressor Signal Open Circuit

74 Auxiliary Fan Signal 2nd Stage Open Circuit

75 Auxiliary Fan Signal 1st Stage Open Circuit

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 77

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

129 Chassis to 8/95

READING ACTUAL VALUES

1. IGNITION ON : Position 1

2. Press the REST button and within 1 second press blower speed button 4.

3. The temperature window (upper left) will alternately display the test step number (ex. "02" In-car Temp) or "0P E" for Open Circuit or "Cl 0" for Closed Circuit.

4. Press "F" button to go to higher test.

5. Press "C" button to go to a lower test.

6. To end this test mode turn IGNITION OFF : Position 0 for longer then 5 seconds.

COMPONENT UNDER TEST

Number Component

02 In-Car Temperature Sensor

04 Outside Temperature Sensor

06 Evaporator Temperature Sensor

08 Heater Core Temperature Sensor

12 Engine Coolant Temperature (ETC) Sensor

14 Temperature Selector Wheel Setting

18 Vehicle Speed Signal(km/h)

20 Soft Top OPEN : "U" ; Soft Top CLOSED : "O"

22 Power Supply Voltage

83 OFF/ON (Not Used)

84 Blower motor voltage "050" (0,5V) - "600" (6,0V)

129 Chassis to 8/95

FAULT DIAGNOSIS

1. Turn temperature selector wheel into the white area.

2. IGNITION ON : Position 1

3. Within the next 10 sec., press the "F", "RECIRCULATE AIR" and "REST" buttons simultaneously for 2 to 4 seconds.

4. The display will show the permanent DTC's stored. press the "RECIRCULATE AIR" button after each is displayed until the display reads "END"

5. Press "RECIRCULATE AIR" button again and the intermittent DTC's will be shown. A SQUARE is shown after each DTC to indicate that it is intermittent. Press the "RECIRCULATE AIR" button again to see the next DTC. Until "END" is shown.

6. To erase the DTC's : IGNITION ON : Position 1 Press the "RECIRCULATE AIR", "REST" and "UP" buttons simultaneously until

--- is displayed in the window.

FAULT CODES - 129 Chassis to 8/95

DTC Readout Description Cause

1 No DTC's Stored in System Memory. No Faults

2 In-Car Temperature Sensor (B10/4) Short Circuit

3 In-Car Temperature Sensor (B10/4) Open Circuit

4 Outside Temperature Sensor (B10/5) Short Circuit

5 Outside Temperature Sensor (B10/5) Open Circuit

6 Evaporator Temperature Sensor (B10/6) Short Circuit

7 Evaporator Temperature Sensor (B10/6) Open Circuit

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 78

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 129 Chassis to 8/95

DTC Readout Description Cause

8 Heater Core Temperature Sensor (B10/1)(Left) Short Circuit

9 Heater Core Temperature Sensor (B10/1)(Left) Open Circuit

10 Heater Core Temperature Sensor (Right) Short Circuit

11 Heater Core Temperature Sensor(Right) Open Circuit

12 Engine Coolant Temperature Sensor (B10/8) Short Circuit

13 Engine Coolant Temperature Sensor (B10/8) Open Circuit

16 Center Air Vent Control Module (N18/2r2) Short Circuit

17 Center Air Vent Control Module (N18/2r2) Open Circuit

18 Center Air Vent Feedback Potentiometer (R23/3) Short Circuit

19 Center Air Vent Feedback Potentiometer (R23/3) Open Circuit

20 Left Air Vent Control Module (N18/2r1) Short Circuit

21 Left Air Vent Control Module (N18/2r1) Open Circuit

22 Left Air Vent Feedback Potentiometer (R23/1) Short Circuit

23 Left Air Vent Feedback Potentiometer (R23/1) Open Circuit

24 Right Air Vent Control Module (N18/2r3) Short Circuit

25 Right Air Vent Control Module (N18/2r3) Open Circuit

26 Right Air Vent Feedback Potentiometer (R23/2) Short Circuit

27 Right Air Vent Feedback Potentiometer (R23/2) Open Circuit

30 Auxiliary Coolant Pump (M13) Short Circuit

31 Automatic A/C Monovalve (Y19) Short Circuit

32 Automatic A/C Monovalve (Right) Short Circuit

33 A/C Compressor Signal Short Circuit

34 Auxiliary Fan Signal, 2nd Stage Short Circuit

35 Auxiliary Fan Signal, 1st Stage Short Circuit

50 Switchover Valve Block Signal (Y11) Short Circuit

70 Auxiliary Coolant Pump (M13) Open Circuit

71 Automatic A/C Monovalve (Y19) Open Circuit

72 Automatic A/C Monovalve (Right) Open Circuit

73 A/C Compressor Signal Open Circuit

74 Auxiliary Fan Signal, 2nd Stage Open Circuit

75 Auxiliary Fan Signal, 1st Stage Open Circuit

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 79

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

129 Chassis from 9/95

READING ACTUAL VALUES

1. IGNITION : Position 1

2. Set temperature selector to 72 degrees F.

3. Press the REST button for more than 6 seconds.

4. The left display will alternately show the number "01" and the in-car temperature.

5. Press the FAN button and the next component number and its value will be displayed.

6. Press the REST button to end the test program.

COMPONENT UNDER TEST

Number Component

01 In-Car Temperature Sensor with Aspirator Blower (B10/4)

02 Outside Temperature Sensor (B14)

03 Left Heater Core Temperature Sensor (B10/2)

05 Evaporator Temperature Sensor (B10/6)

06 Engine Coolant Temperature Sensor (ECT) (B11/4)

07 Refrigerant Pressure in Bar

08 Refrigerant Temperature Sensor (B12/1)

09 Not Used

10 Blower Control Voltage

20 Control Current for Auxiliary Fan exp. : 7 = 7 mA

21 Engine RPM. example 00..99 (x100) = 9900

22 Vehicle Speed

23 PIN 58D exp. 99.0 = 99% of Battery Voltage

24 Battery Voltage : 12.8 = 12,8 Volt

40 A/C Controller Software Version Coding

41 A/C Controller Hardware Version

42 Variant code 1

43 Variant code 2

50 Not Used

51 Not Used

52 Not Used

54 ON/OFF A/C Compressor emergency off signal from engine control module.

60 Roof "OPE" = OPEN, "CLO" = CLOSED

61 Left Air Outlet, Potentiometer Voltage

62 Vacuum Actuator 46, Feedback Potentiometer Voltage

63 Center Air Outlet, Potentiometer Voltage

64 Vacuum Actuator 47, Feedback Potentiometer Voltage

65 Right Air Outlet, Potentiometer Voltage

66 Vacuum Actuator 47, Feedback Potentiometer Voltage

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 80

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

129 Chassis from 9/95

FAULT DIAGNOSIS

1. IGNITION : Position 1

2. Temperature selector wheel : "LO"

3. Within 20 seconds press the REST and DEFROST buttons simultaneously for more than 5 seconds.

4. The LED in the RECIRCULATE button flashes and "dI A" appears on the display.

5. Press the AUTO button until all DTC's are displayed and recorded.

6. The current faults are displayed first, then the intermittent faults. "END'" is displayed when all codes have been displayed.

7. To erase codes press AUTO again, "dEL" will be displayed. Press v and ^ simultaneously for more than 5 seconds. The display will then show "---". Press AUTO to cancel the erase.

8. IGNITION : OFF to end the test program.

FAULT CODES - 129 Chassis from 9/95

DTC Readout Description

026 CAN Bus Communication

226 In-Car Air Temperature Sensor (B10/4)

227 Outside Air Temperature Sensor (B14)

228 Heater Core Temperature Sensor (B10/2)

230 Evaporator Temperature Sensor (B10/6)

231 Engine Coolant Temperature Sensor (B11/4)

232 Refrigerant Pressure Sensor (B12)

233 Refrigerant Temperature Sensor (B12/1)

241 Refrigerant Level

416 Coolant Circulation Pump (A31m1)

417 Automatic A/C Monovalve (Y19)

419 A/C Compressor Electromagnetic Clutch (A9k1)

420 Closed (Idle) Throttle Speed Increase

421 Auxiliary Fan Control Module (N65/1)

422 Serial Interface Connection (K1) to Instrument Cluster (IC)

423 Switchover Valve Block (15 connection multiplex) (Y11)

459 Serial Interface Connection (K2) to Instrument Cluster (IC)

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 81

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

140 Chassis to 8/95

READING ACTUAL VALUES

1. Turn temperature selector wheel into the white area.

2. IGNITION = ON : Position 1

3. Press the left and right "AUTO" buttons.

4. Within 20 seconds press the "REST" button for more than 5 sec.

5. LEFT DISPLAY = Component Number RIGHT DISPLAY = Actual Component Value or "HI" for a short circuit or "LO" for an open circuit

6. Press the left "AUTO" button to monitor the next component.

7. Press the "REST" button to end the test mode.

COMPONENTS UNDER TEST

Number Component

01 In-Car Temperature Sensor with Aspirator Blower (B10/4)

02 Outside Temperature Sensor (B10/5)

03 Left Heater Core Temperature Sensor (B10/2)

04 Right Heater Core Temperature Sensor (B10/3)

05 Evaporator Temperature Sensor (B10/6)

06 Engine Coolant Temperature (ECT) Sensor (A/C) (B10/8)

07 Refrigerant Pressure in Bar : Ex. 06'4 = 6.4 Bar

08 Blower Control Voltage from 8(min) - 60(max)

09 Software Status, A/C Pushbutton Control Module(N22) Mfg.

10 Left rear heater core temperature sensor (B10/9)

11 Right rear heater core temperature sensor (B10/10)

12 Rear Evaporator Temperature Sensor (B10/11)

13 Software Status, Rear A/C Pushbutton Control Module(N22) Mfg.

16 Control Module Applicable for Charcoal Filter : "A"=YES "0 "=NO

140 Chassis to 8/95

FAULT DIAGNOSIS

1. Turn the left selector wheel into the red area.

2. Turn the right selector wheel into the blue area.

3. IGNITION = ON : Position 1.

4. Press the "AUTO" button.

5. Within 20 seconds, press the "REST" and "O" button for more than 2 seconds.

6. The display will show the permanent DTC's stored. Left window "E0" or "E1", right window "01", "02"...etc. Record each DTC and press the right "AUTO" button to display the next code. Continue until "END" is displayed.

7. To erase the DTC's : Turn IGNITION OFF, Then turn IGNITION ON : Position 1. Press the left "AUTO" button. A "d" (delete) is displayed in the left window. By pressing the right "AUTO" button the DTC will be deleted. Alternate left and right "AUTO" buttons until all DTCs are erased and "E0 00" is displayed.

Go to next page for Fault Codes

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 82

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 140 Chassis to 8/95

DTC Readout Description Cause Fault Type

001 No DTC's Stored in System Memory.

002 A/C Pushbutton Control Module (N22)

003 Rear A/C Pushbutton Control Module (N22/3)

006 Connection to the Switchover Valve Block (Y11)

007 Data Exchange (CAN B) Short Circuit.

008 Data Exchange (CAN A) Short Circuit.

009 Data Exchange (CAN A and CAN B) Short Circuit.

010 Make the Diagnosis Again.

011 Data Exchange (CAN B) Open Circuit.

012 Data Exchange (CAN A) Open Circuit.

013 Connection with the Rear A/C Pushbutton Control Module

014 Data Exchange (CAN B) : Rear A/C Control Module Open Circuit.

015 Data Exchange (CAN A) : Rear A/C Control Module Open Circuit.

016 In-Car Air Temperature Sensor (B10/4) Short Circuit Continuous

017 In-Car Air Temperature Sensor (B10/4) Short Circuit Intermittent

018 In-Car Air Temperature Sensor (B10/4) Short or Open Circuit Continuous

019 In-Car Air Temperature Sensor (B10/4) Short or Open Circuit Intermittent

024 Left Heater Core Temperature Sensor (B10/2) Short Circuit Continuous

025 Left Heater Core Temperature Sensor (B10/2) Short Circuit Intermittent

026 Left Heater Core Temperature Sensor (B10/2) Short or Open Circuit Continuous

027 Left Heater Core Temperature Sensor (B10/2) Short or Open Circuit Intermittent

028 Right Heater Core Temperature Sensor (B10/3) Short Circuit Continuous

029 Right Heater Core Temperature Sensor (B10/3) Short Circuit Intermittent

030 Right Heater Core Temperature Sensor (B10/3) Short or Open Circuit Continuous

031 Right Heater Core Temperature Sensor (B10/3) Short or Open Circuit Intermittent

032 Outside Air Temperature Sensor (B10/5) Short Circuit Continuous

033 Outside Air Temperature Sensor (B10/5) Short Circuit Intermittent

034 Outside Air Temperature Sensor (B10/5) Short or Open Circuit Continuous

035 Outside Air Temperature Sensor (B10/5) Short or Open Circuit Intermittent

036 Evaporator Temperature Sensor (B10/6) Short Circuit Continuous

037 Evaporator Temperature Sensor (B10/6) Short Circuit Intermittent

038 Evaporator Temperature Sensor (B10/6) Short or Open Circuit Continuous

039 Evaporator Temperature Sensor (B10/6) Short or Open Circuit Intermittent

040 Engine Coolant Temperature Sensor (B10/8) Short Circuit Continuous

041 Engine Coolant Temperature Sensor (B10/8) Short Circuit Intermittent

042 Engine Coolant Temperature Sensor (B10/8) Short or Open Circuit Continuous

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Page 83

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 140 Chassis to 8/95

DTC Readout Description Cause Fault Type

043 Engine Coolant Temperature Sensor (B10/8) Short or Open Circuit Intermittent

044 Refrigerant Pressure Sensor (B12) Short Circuit Continuous

045 Refrigerant Pressure Sensor (B12) Short Circuit Intermittent

046 Refrigerant Pressure Sensor (B12) Short or Open Circuit Continuous

047 Refrigerant Pressure Sensor (B12) Short or Open Circuit Intermittent

048 Left Temperature Wheel Short Circuit Continuous

049 Left Temperature Wheel Short Circuit Intermittent

050 Left Temperature Wheel Short or Open Circuit Continuous

051 Left Temperature Wheel Short or Open Circuit Intermittent

052 Right Temperature Wheel Short Circuit Continuous

053 Right Temperature Wheel Short Circuit Intermittent

054 Right Temperature Wheel Short or Open Circuit Continuous

055 Right Temperature Wheel Short or Open Circuit Intermittent

072 Heater Supply Unit Coolant Circulation Pump (A31m1) Short Circuit Continuous

073 Heater Supply Unit Coolant Circulation Pump (A31m1) Short Circuit Intermittent

074 Coolant Circulation Pump (A31m1) Short or Open Circuit Continuous

075 Coolant Circulation Pump (A31m1) Short or Open Circuit Intermittent

076 Coolant Circulation Pump (A31m1) Overload Continuous

077 Coolant Circulation Pump (A31m1) Overload Intermittent

080 Left Duovalve (Water Valve) (A31y1) Short Circuit Continuous

081 Left Duovalve (Water Valve) (A31y1) Short Circuit Intermittent

082 Left Duovalve (Water Valve) (A31y1) Short or Open Circuit Continuous

083 Left Duovalve (Water Valve) (A31y1) Short or Open Circuit Intermittent

084 Right Duovalve (Water Valve) (A31y2) Short Circuit Continuous

085 Right Duovalve (Water Valve) (A31y2) Short Circuit Intermittent

086 Right Duovalve (Water Valve) (A31y2) Short or Open Circuit Continuous

087 Right Duovalve (Water Valve) (A31y2) Short or Open Circuit Intermittent

088 A/C Compressor Ground Activation Continuous

089 A/C Compressor Ground Activation Intermittent

090 A/C Compressor Ground Activation Short or Open Circuit Continuous

091 A/C Compressor Ground Activation Short or Open Circuit Intermittent

096 Auxiliary Fan, 1ST Stage Activation Short Circuit Continuous

097 Auxiliary Fan, 1ST Stage Activation Short Circuit Intermittent

098 Auxiliary Fan, 1ST Stage Activation Short or Open Circuit Continuous

099 Auxiliary Fan, 1ST Stage Activation Short or Open Circuit Intermittent

100 Auxiliary Fan, 2ND Stage Activation Short Circuit Continuous

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Page 84

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 140 Chassis to 8/95

DTC Readout Description Cause Fault Type

101 Auxiliary Fan, 2ND Stage Activation Short Circuit Intermittent

102 Auxiliary Fan, 2ND Stage Activation Short or Open Circuit Continuous

103 Auxiliary Fan, 2ND Stage Activation Short or Open Circuit Intermittent

104 Auxiliary Fan, 3RD Stage Activation Short Circuit Continuous

105 Auxiliary Fan, 3RD Stage Activation Short Circuit Intermittent

106 Auxiliary Fan, 3RD Stage Activation Short or Open Circuit Continuous

107 Auxiliary Fan, 3RD Stage Activation Short or Open Circuit Intermittent

108 Auxiliary Coolant Pump Control Relay Module (K30), Power

Supply

109 Auxiliary Coolant Pump Control Relay Module (K30), Power

Supply

110 Auxiliary Coolant Pump Control Relay Module (K30), Power

Supply

111 Auxiliary Coolant Pump Control Relay Module (K30), Power

Supply

112 Engine RPM Increase Diode Matrix (V2) Short Circuit Continuous

113 Engine RPM Increase Diode Matrix (V2) Short Circuit Intermittent

114 Engine RPM Increase Diode Matrix (V2) Short or Open Circuit Continuous

115 Engine RPM Increase Diode Matrix (V2) Short or Open Circuit Intermittent

116 Activated Charcoal Filter Actuator (A32m2) : (OPEN) Short Circuit Continuous

117 Activated Charcoal Filter Actuator (A32m2) : (OPEN) Short Circuit Intermittent

118 Activated Charcoal Filter Actuator (A32m2) : (OPEN) Short or Open Circuit Continuous

119 Activated Charcoal Filter Actuator (A32m2) : (OPEN) Short or Open Circuit Intermittent

120 Activated Charcoal Filter Actuator (A32m2) : (CLOSED) Short Circuit Continuous

121 Activated Charcoal Filter Actuator (A32m2) : (CLOSED) Short Circuit Intermittent

122 Activated Charcoal Filter Actuator (A32m2) : (CLOSED) Short or Open Circuit Continuous

123 Activated Charcoal Filter Actuator (A32m2) : (CLOSED) Short or Open Circuit Intermittent

128 Left Rear Heater Core Temperature Sensor (B10/9) Short Circuit Continuous

129 Left Rear Heater Core Temperature Sensor (B10/9) Short Circuit Intermittent

130 Left Rear Heater Core Temperature Sensor (B10/9) Short or Open Circuit Continuous

131 Left Rear Heater Core Temperature Sensor (B10/9) Short or Open Circuit Intermittent

132 Right Rear Heater Core Temperature Sensor (B10/10) Short Circuit Continuous

133 Right Rear Heater Core Temperature Sensor (B10/10) Short Circuit Intermittent

134 Right Rear Heater Core Temperature Sensor (B10/10) Short or Open Circuit Continuous

135 Right Rear Heater Core Temperature Sensor (B10/10) Short or Open Circuit Intermittent

136 Left Temperature Selector wheel Short Circuit Continuous

137 Left Temperature Selector wheel Short Circuit Intermittent

138 Left Temperature Selector wheel Short or Open Circuit Continuous

Short Circuit Continuous

Short Circuit Intermittent

Short or Open Circuit Continuous

Short or Open Circuit Intermittent

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 85

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 140 Chassis to 8/95

DTC Readout Description Cause Fault Type

139 Left Temperature Selector wheel Short or Open Circuit Intermittent

140 Right Temperature Selector wheel Short Circuit Continuous

141 Right Temperature Selector wheel Short Circuit Intermittent

142 Right Temperature Selector wheel Short or Open Circuit Continuous

143 Right Temperature Selector wheel Short or Open Circuit Intermittent

144 Rear Evaporator Temperature Sensor (B10/11) Short Circuit Continuous

145 Rear Evaporator Temperature Sensor (B10/11) Short Circuit Intermittent

146 Rear Evaporator Temperature Sensor (B10/11) Short or Open Circuit Continuous

147 Rear Evaporator Temperature Sensor (B10/11) Short or Open Circuit Intermittent

148 Coolant Circulation Pump (A31/1m1) Short Circuit Continuous

149 Coolant Circulation Pump (A31/1m1) Short Circuit Intermittent

150 Coolant Circulation Pump (A31/1m1) Short or Open Circuit Continuous

151 Coolant Circulation Pump (A31/1m1) Short or Open Circuit Intermittent

152 Coolant Circulation Pump (A31/1m1) Overload Continuous

153 Coolant Circulation Pump (A31/1m1) Overload Intermittent

156 Left Duovalve (Water Valve) (A31/1y1) Short Circuit Continuous

157 Left Duovalve (Water Valve) (A31/1y1) Short Circuit Intermittent

158 Left Duovalve (Water Valve) (A31/1y1) Short or Open Circuit Continuous

159 Left Duovalve (Water Valve) (A31/1y1) Short or Open Circuit Intermittent

160 Right Duovalve (Water Valve) (A31/1y2) Short Circuit Continuous

161 Right Duovalve (Water Valve) (A31/1y2) Short Circuit Intermittent

162 Right Duovalve (Water Valve) (A31/1y2) Short or Open Circuit Continuous

163 Right Duovalve (Water Valve) (A31/1y2) Short or Open Circuit Intermittent

164 Rear Refrigerant Shut-Off Valve (Y67) Short Circuit Continuous

165 Rear Refrigerant Shut-Off Valve (Y67) Short Circuit Intermittent

166 Rear Refrigerant Shut-Off Valve (Y67) Short or Open Circuit Continuous

167 Rear Refrigerant Shut-Off Valve (Y67) Short or Open Circuit Intermittent

168 Rear Tunnel Flap Vacuum Valve (Y67/1) Short Circuit Continuous

169 Rear Tunnel Flap Vacuum Valve (Y67/1) Short Circuit Intermittent

170 Rear Tunnel Flap Vacuum Valve (Y67/1) Short or Open Circuit Continuous

171 Rear Tunnel Flap Vacuum Valve (Y67/1) Short or Open Circuit Intermittent

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 86

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

140 Chassis from 9/95

READING ACTUAL VALUES

1. IGNITION : Position 1

2. Press the AUTO button

3. Set both temperature selectors to 72 degrees F.

4. Press the REST button for more than 5 seconds.

5. The left display will alternately show the number "1" and the in-car temperature.

6. Press the AUTO button and the next component number and its value will be displayed.

7. Press the REST button to end the test program.

COMPONENT UNDER TEST

Number Component

01 In-Car Temperature Sensor with Aspirator Blower (B10/4)

02 Outside Temperature Sensor (B10/5) 1996, (B14) as of 1997

03 Left Heater Core Temperature Sensor (B10/2)

04 Right Heater Core Temperature Sensor (B10/3)

05 Evaporator Temperature Sensor (B10/6)

06 Engine Coolant Temperature (ECT) Sensor (A/C) (B11/4)

07 Refrigerant Pressure in Bar

08 Refrigerant Temperature Sensor (B12/1)

10 Blower Control Voltage

11 Emissions (Refrigerant Leak) Sensor (B31)

12 Sun (Excessive Heat) Sensor (B32)

20 Control Current for Auxiliary Fan example : 7 = 7 mA

21 Engine RPM. example 00..99 (x100) = 9900

22 Vehicle Speed

23 PIN 58D example. 99.0 = 99% of Battery Voltage

24 Battery Voltage : 12.8 = 12,8 Volt

30 Left Rear Heater Core Temperature Sensor (B10/9)

31 Right Rear Heater Core Temperature sensor (B10/10)

32 Rear Evaporator Temperature Sensor (B10/11)

33 Rear Blower Control Voltage

34 Left Rear Temperature Sensor version

35 Right Rear Temperature Sensor

38 Rear A/C Controller Software Version Coding

39 Rear A/C Controller Hardware Version

40 Front A/C Controller Software Version Coding

41 Front A/C Controller Hardware Version

42 Variant code 1

43 Variant code 2

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 87

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

140 Chassis from 9/95

FAULT DIAGNOSIS

1. IGNITION : Position 1

2. Left Temperature selector wheel : HI Right Temperature selector wheel : LO

3. Within 20 seconds press the REST and EC buttons simultaneously for more than 5 seconds.

4. The LED in the RECIRCULATE button flashes and "OFF" appears on the display.

5. Press the right AUTO button until all DTC's are displayed and recorded.

6. To erase all codes must be read out. Press both AUTO buttons simultaneously for more than 2 seconds. "d" will be displayed on the left and "FF" is displayed on the right. The erase can be canceled by pressing the AUTO button.

7. Reset temperature selector to normal setting.

8. IGNITION : OFF to end the test program.

FAULT CODES - 140 Chassis from 9/95

DTC Readout Description

026 CAN Bus Communication

226 In-Car Air Temperature Sensor (B10/4)

227 Outside Air Temperature Sensor (B10/5) to 1996, (B14) as of 1997

228 Left Heater Core Temperature Sensor (B10/2)

229 Right Heater Core Temperature Sensor (B10/3)

230 Evaporator Temperature Sensor (B10/6)

231 Engine Coolant Temperature Sensor (B11/4)

or DFI or IFI models Right Engine Coolant Temperature Sensor (B11/10) to 1996

232 Refrigerant Pressure Sensor (B12)

233 Refrigerant Temperature Sensor (B12/1)

234 Sun Sensor (B32)

235 Emissions (Refrigerant Leak) Sensor (B31)

241 Refrigerant Level

416 Coolant Circulation Pump (A31m1)

417 Left Duovalve (Water Valve) (Y21y1)

418 Right Duovalve (Water Valve) (Y21y2)

419 A/C Compressor Electromagnetic Clutch (A9k1)

420 Closed (Idle) Throttle Speed Increase

421 Pulse Module (N65)

422 Serial Interface Connection (K1) to Instrument Cluster (IC)

423 Switchover Valve Block (Y11)

424 Activated Charcoal Filter Actuator (A32m2) : OPEN

425 Activated Charcoal Filter Actuator (A32m2) : CLOSE

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 88

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 140 Chassis from 9/95

DTC Readout Description

432 Maximum Heat

459 Serial Interface Connection (K2) to Instrument Cluster (IC)

460 LED - Center Air Outlet "Warm"

461 LED - Center Air Outlet "Cold"

462 Wide Open Throttle (WOT) Position Signal - Diesel Engine Only

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 89

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

202 Chassis to 8/95

READING ACTUAL VALUES

1. IGNITION : Position 2 (ON)

2. Set temperature selection to 72 degrees F (Press v and ^ simultaneously).

3. Press the AUTO button.

4. Press the REST button for more than 5 seconds.

5. The display will alternately show the number "01" and the in-car temperature or "LO" if there is an open circuit or "HI" if there is a short circuit.

6. Press the "Top Air Outlet" button to increase the component tested and the "Bottom Air Outlet" button to decrease the component number tested.

7. Press the REST button to end the test program.

COMPONENT UNDER TEST

Number Component

01 In-Car Temperature Sensor with Aspirator Blower (B10/4)

02 Outside Temperature Sensor (B10/5)

03 Heater Core Temperature Sensor (B10/1)

05 Evaporator Temperature Sensor (B10/6)

06 Engine Coolant Temperature (ECT) Sensor (A/C) (B10/8)

07 Refrigerant Pressure in Bar

08 Blower Control Voltage

09 Software Status of A/C Pushbutton Control Module

15 Selected In-Car Temperature

20 Version Code

21 Engine Speed in RPM

22 A/C Compressor Speed in RPM

23 Vehicle Speed in km/h

50 Not Used

51 Number of Current Poly-V Belt Slip Recognitions

52 Number of Stored Poly-V Belt Slip Recognitions

202 Chassis to 8/95

FAULT DIAGNOSIS

1 IGNITION : Position 2 (ON) 2 Press the V button until "LO" appears on the display. 3 Within 20 seconds press the REST and DEFROST buttons simultaneously for more then 2 seconds. 4 The LED in the RECIRCULATE button flashes and "dI R" appears on the display 5 Press the AUTO button until all DTC's are displayed and recorded. Continuous faults are displayed first. if no faults are stored,

"En d" is displayed. Press AUTO again to retrieve intermittent faults. If no intermittent faults are stored, "En d" is displayed.

6 Press the AUTO button until "dE L" is displayed. To erase codes press both V and ^ simultaneously for at least 5 seconds. The

display will show "---"

7 IGNITION : OFF to end the test program.

Go to next page for Fault Codes.

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 90

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 202 Chassis to 8/95

DTC Readout Description Cause Fault Type

01 No ERROR Stored No Faults

02 A/C Pushbutton Control Module (N22). Power failure or damaged

computer

03 In-Car Temperature Sensor with Aspirator Blower (B10/4) Short circuit Continuous

04 In Car Temperature Sensor with Aspirator Blower (B10/4) Short circuit Intermittent

05 In-Car Temperature Sensor with Aspirator Blower (B10/4) Short or Open circuit Continuous

06 In-Car Temperature Sensor with Aspirator Blower (B10/4) Short or Open circuit Intermittent

07 Outside Air Temperature Sensor (B10/5) Short circuit Continuous

08 Outside Air Temperature Sensor (B10/5) Short circuit Intermittent

09 Outside air Temperature Sensor (B10/5) Short or Open circuit Continuous

10 Outside air Temperature Sensor (B10/5) Short or Open circuit Intermittent

11 Heater Core Temperature Sensor (B10/1) Short circuit Continuous

12 Heater Core Temperature Sensor (B10/1) Short circuit Intermittent

13 Heater Core Temperature Sensor (B10/1) Short or Open circuit Continuous

14 Heater Core Temperature Sensor (B10/1) Short or Open circuit Intermittent

19 Evaporator Temperature Sensor (B10/6) Short circuit Continuous

20 Evaporator Temperature Sensor (B10/6) Short circuit Intermittent

21 Evaporator Temperature Sensor (B10/6) Short or Open circuit Continuous

22 Evaporator Temperature Sensor (B10/6) Short or Open circuit Intermittent

23 Engine Coolant Temperature Sensor (ETC) (B10/8) Short circuit Continuous

24 Engine Coolant Temperature Sensor (ETC) (B10/8) Short circuit Intermittent

25 Engine Coolant Temperature Sensor (ETC) (B10/8) Short or Open circuit Continuous

26 Engine Coolant Temperature Sensor (ETC) (B10/8) Short or Open circuit Intermittent

27 Refrigerant Pressure Sensor (B12) Short circuit Continuous

28 Refrigerant Pressure Sensor (B12) Short circuit Intermittent

29 Refrigerant Pressure Sensor (B12) Short or Open circuit Continuous

30 Refrigerant Pressure Sensor (B12) Short or Open circuit Intermittent

31 A/C Compressor RPM Sensor (A9l1) Bad Sensor

32 Poly-V Belt Slip Recognition Slipping Belt

47 Auxiliary Coolant Pump (M13) Unknown

48 Auxiliary Coolant Pump (M13) Short circuit Intermittent

49 Auxiliary Coolant Pump (M13) Short or Open circuit Continuous

50 Auxiliary Coolant Pump (M13) Short or Open circuit Intermittent

51 Duovalve (Water Valve) (Y21) Short circuit Continuous

52 Duovalve (Water Valve) (Y21) Short circuit Intermittent

53 Duovalve (Water Valve) (Y21) Short or Open circuit Continuous

54 Duovalve (Water Valve) (Y21) Short or Open circuit Intermittent

Baum Tools Unlimited Inc. 941-927-1414 / Technical Support 800-804-1002 or tech@baumtools.com

Page 91

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 202 Chassis to 8/95

DTC Readout Description Cause Fault Type

59 A/C Compressor Electromagnetic Clutch (A9k1) Short circuit Continuous

60 A/C Compressor Electromagnetic Clutch (A9k1) Short circuit Intermittent

61 A/C Compressor Electromagnetic Clutch (A9k1) Short or Open circuit Continuous

62 A/C Compressor Electromagnetic Clutch (A9k1) Short or Open circuit Intermittent

63 Activation of Auxiliary Fan Stage 1 Short circuit Continuous

64 Activation of Auxiliary Fan Stage 1 Short circuit Intermittent

65 Activation of Auxiliary Fan Stage 1 Short or Open circuit Continuous

66 Activation of Auxiliary Fan Stage 1 Short or Open circuit Intermittent

67 Activation of Auxiliary Fan Stage 2 Short circuit Continuous

68 Activation of Auxiliary Fan Stage 2 Short circuit Intermittent

69 Activation of Auxiliary Fan Stage 2 Short or Open circuit Continuous

70 Activation of Auxiliary Fan Stage 2 Short or Open circuit Intermittent

71 Closed (Idle) Throttle Speed Increase Short or Open circuit Continuous

72 Closed (Idle) Throttle Speed Increase Short or Open circuit Intermittent

73 Closed (Idle) Throttle Speed Increase Short circuit Continuous

74 Closed (Idle) Throttle Speed Increase Short circuit Intermittent

75 Switchover Valve Block (Y11/3), Diverter Flap Continuous

76 Switchover Valve Block (Y11/3), Diverter Flap Intermittent

77 Switchover Valve Block (Y11/3), Diverter Flap Short or Open circuit Continuous

78 Switchover Valve Block (Y11/3), Diverter Flap Short or Open circuit Intermittent

79 Switchover Valve Block (Y11/3), Tempering Flap Continuous

80 Switchover Valve Block (Y11/3), Tempering Flap Intermittent

81 Switchover Valve Block (Y11/3), Tempering Flap Short or Open circuit Continuous

82 Switchover Valve Block (Y11/3), Tempering Flap Short or Open circuit Intermittent

83 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Long Stroke (80%)

84 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Long Stroke (80%)

85 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Long Stroke (80%)

86 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap Short or Open circuit Intermittent

87 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Short Stroke (20%)

88 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Short Stroke (20%)

89 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Short Stroke (20%)

90 Switchover Valve Block (Y11/3), Fresh/Recirculating Air Flap

Short Stroke (20%)

Short or Open circuit Continuous

Short or Open circuit Intermittent

Continuous

Intermittent

Continuous

Intermittent

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Page 92

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

FAULT CODES - 202 Chassis to 8/95

DTC Readout Description Cause Fault Type

91 Switchover Valve Block (Y11/3), Defroster Flap Long Stroke

(80%)

92 Switchover Valve Block (Y11/3), Defroster Flap Long Stroke

(80%)

93 Switchover Valve Block (Y11/3), Defroster Flap Long Stroke

(80%)

94 Switchover Valve Block (Y11/3), Defroster Flap Long Stroke

(80%)

95 Switchover Valve Block (Y11/3), Defroster Flap Short Stroke

(20%)

96 Switchover Valve Block (Y11/3), Defroster Flap Short Stroke

(20%)

97 Switchover Valve Block (Y11/3), Defroster Flap Short Stroke

(20%)

98 Switchover Valve Block (Y11/3), Defroster Flap Short Stroke

(20%)

99 Switchover Valve Block (Y11/3), Footwell Flap Long Stroke (80%) Continuous

100 Switchover Valve Block (Y11/3), Footwell Flap Long Stroke (80%) Intermittent

101 Switchover Valve Block (Y11/3), Footwell Flap Long Stroke (80%) Short or Open circuit Continuous

102 Switchover Valve Block (Y11/3), Footwell Flap Long Stroke (80%) Short or Open circuit Intermittent

103 Switchover Valve Block (Y11/3), Footwell Flap Short Stroke

(20%)

104 Switchover Valve Block (Y11/3), Footwell Flap Short Stroke

(20%)

105 Switchover Valve Block (Y11/3), Footwell Flap Short Stroke

(20%)

106 Switchover Valve Block (Y11/3), Footwell Flap Short Stroke

(20%)

Short or Open circuit Continuous

Short or Open circuit Intermittent

Short or Open circuit Continuous

Short or Open circuit Intermittent

Short or Open circuit Continuous

Short or Open circuit Intermittent

Continuous

Intermittent

Continuous

Intermittent

Continuous

Intermittent

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Page 93

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

202 Chassis from 9/95

READING ACTUAL VALUES

1. IGNITION : Position 1

2. Set temperature selector to 72 degrees F.

3. Press the REST button for more than 6 seconds.

4. The left display will alternately show the number "01" and the in-car temperature.

5. Press the FAN button and the next component number and its value will be displayed.

6. Press the REST button to end the test program.

COMPONENT UNDER TEST

Number Component

01 In-Car Temperature Sensor with Aspirator Blower (B10/4)

02 Outside Temperature Sensor (B14)

03 Heater Core Temperature Sensor (B10/1)

05 Evaporator Temperature Sensor (B10/6)

06 Engine Coolant Temperature Sensor (ECT) (B11/4)

07 Refrigerant Pressure in Bar

08 Refrigerant Temperature Sensor (B12/1)

09 Not Used

10 Blower Control Voltage

20 Control Current for Auxiliary Fan exp. : 7 = 7 mA

21 Engine RPM. example 00..99 (x100) = 9900

22 Vehicle Speed

23 PIN 58D exp. 99.0 = 99% of Battery Voltage

24 Battery Voltage : 12.8 = 12,8 Volt

40 A/C Controller Software Version Coding

41 A/C Controller Hardware Version

42 Variant code 1

43 Variant code 2

50 Not Used

51 Not Used

52 Not Used

54 ON/OFF A/C Compressor emergency off signal from engine control module.

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Page 94

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

202 Chassis from 9/95

FAULT DIAGNOSIS

1. IGNITION : Position 1

2. Temperature selector wheel : "LO"

3. Within 20 seconds press the REST and DEFROST buttons simultaneously for more than 5 seconds.

4. The LED in the RECIRCULATE button flashes and "dI A" appears on the display.

5. Press the AUTO button until all DTC's are displayed and recorded.

6. The current faults are displayed first, then the intermittent faults. "END'" is displayed when all codes have been displayed.

7. To erase codes press v and ^ simultaneously for more than 5 seconds. The display will then show "---". Press AUTO to cancel the erase.

8. IGNITION : OFF to end the test program.

FAULT CODES - 202 Chassis from 9/95

DTC Readout Description

026 CAN Bus Communication

226 In-Car Air Temperature Sensor (B10/4)

227 Outside Air Temperature Sensor (B14)

228 Heater Core Temperature Sensor (B10/1)

230 Evaporator Temperature Sensor (B10/6)

231 Engine Coolant Temperature Sensor (B11/4)

232 Refrigerant Pressure Sensor (B12)

233 Refrigerant Temperature Sensor (B12/1)

241 Refrigerant Level

416 Coolant Circulation Pump (A31m1)

417 Left Duovalve (Water Valve) (Y21y1)

418 Right Duovalve (Water Valve) (Y21y2)

419 A/C Compressor Electromagnetic Clutch (A9k1)

420 Closed (Idle) Throttle Speed Increase

421 Pulse Module (N65)

422 Serial Interface Connection (K1) to Instrument Cluster (IC)

451 Diverter Flap (Y11/3)

452 Blend Air Flap (Y11/3)

453 Fresh/Recirculated Air Flap (Y11/3) Long Stroke

454 Fresh/Recirculated Air Flap (Y11/3) Short Stroke

455 Defroster Outlet Flap (Y11/3) Long Stroke

456 Defroster Outlet Flap (Y11/3) Short Stroke

457 Footwell Flap (Y11/3) Long Stroke

458 Footwell Flap (Y11/3) Short Stroke

459 Serial Interface Connection (K2) to Instrument Cluster (IC)

462 Wide Open Throttle (WOT) Position Signal - Diesel Engine Only

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Page 95

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

210 Chassis from 9/95

READING ACTUAL VALUES

1. IGNITION : Position 1

2. Press the AUTO button

3. Set both temperature selectors to 72 degrees F.

4. Press the REST button for more than 5 seconds.

5. The left display will alternately show the number "1" and the in-car temperature.

6. Press the AUTO button and the next component number and its value will be displayed.

7. Press the REST button to end the test program.

COMPONENT UNDER TEST

Number Component

01 In-Car Temperature Sensor with Aspirator Blower (B10/4)

02 Outside Temperature Sensor (B14)

03 Left Heater Core Temperature Sensor (B10/1)

04 Right Heater Core Temperature Sensor (B10/1)

05 Evaporator Temperature Sensor (B10/6)

06 Engine Coolant Temperature (ECT) Sensor (A/C) (B1/4)

07 Refrigerant Pressure in Bar

08 Refrigerant Temperature Sensor (B12/1)

10 Blower Control Voltage

11 Emissions (Refrigerant Leak) Sensor (B31)

12 Sun (Excessive Heat) Sensor (B32)

20 Control Current for Auxiliary Fan exp. : 7 = 7 mA

21 Engine RPM. example 00..99 (x100) = 9900

22 Vehicle Speed

23 PIN 58D exp. 99.0 = 99% of Battery Voltage

24 Battery Voltage : 12.8 = 12,8 Volt

40 Software Version Encoded

41 Hardware Version

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Page 96

A/C SELF DIAGNOSTIC SYSTEMS - 1990-97

210 Chassis from 9/95

FAULT DIAGNOSIS

1. IGNITION : Position 1

2. Left Temperature selector wheel : HI Right Temperature selector wheel : LO

3. Within 20 seconds press the REST and EC buttons simultaneously for more than 5 seconds.

4. The LED in the RECIRCULATE button flashes and "dI R" appears on the display

5. Press the right AUTO button until all DTC's are displayed and recorded.

6. To erase, all codes must be read out. Press both AUTO buttons simultaneously for more than 2 seconds. "d" will be displayed on the left and "FF" is displayed on the right. The erase can be canceled by pressing the AUTO.

7. Reset temperature selector to normal setting.

8. IGNITION : OFF to end the test program.

FAULT CODES - 210 Chassis from 9/95

DTC Readout Description

026 CAN - Communication

226 In-Car Air Temperature Sensor (B10/4)

227 Outside Air Temperature Sensor (B14)

228 Left Heater Core Temperature Sensor (B10/1)

229 Right Heater Core Temperature Sensor (B10/1)

230 Evaporator Temperature Sensor (B10/6)

231 Engine Coolant Temperature Sensor (B10/8)

232 Refrigerant Pressure Sensor (B12)

233 Refrigerant Temperature Sensor (B12/1)

234 Sun Sensor (B32)

235 Emissions (Refrigerant Leak) Sensor (B31)

241 Refrigerant Level

416 Coolant Circulation Pump (M13)

417 Left Duovalve (Water Valve) (Y21y1)

418 Right Duovalve (Water Valve) (Y21y2)

419 A/C Compressor Electromagnetic Clutch (A9k1)

420 Closed (Idle) Throttle Speed Increase

421 Pulse Module

422 Serial Interface Connection (K1) to Instrument Cluster (IC)

423 Switchover Valve Block (Y11)

424 Activated Charcoal Filter Actuator (A32m2) : OPEN

425 Activated Charcoal Filter Actuator (A32m2) : CLOSE

432 Maximum Heat

459 Serial Interface Connection (K2) to Instrument Cluster (IC)

462 Wide Open Throttle (WOT) Position Signal - Diesel Engine Only

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Page 97

MERCEDES-BENZ ACRONYMS

ACRONYM DESCRIPTION

4MATIC 4 Wheel Drive Transmission Control A/C (Automatic)* Air Conditioning (Automatic) A/C (Tempmatic)* Air Conditioning (Tempmatic) AAC Automatic Air Conditioning AAM All Activity Module AB Supplemental Restraint System (Airbag) ABS Anti-lock Brake System ACSR Automatic Child Seat Recognition ADM Automatic Dimming Inside Rearview Mirror ADS Automatic Damping System (Suspension) AIR Secondary Air Injection AKR Anti-Knock Regulation AP Accelerator Pedal APS Auto Pilot System AS Antenna System ASD Automatic Locking Differential ASR Acceleration Slip Regulation AT Automatic Transmission ATA* Anti-theft Alarm System BA Backup Assist BARO Barometric Pressure BCAPC Barometric Pressure-charge Air Pressure Compensation BDC Bottom Dead Center BM* Base Module (Master Ecu Controller) BPC Barometric Pressure Compensation CA Closing Assist CAN Controller Area Network CC* Cruise Control (Tempomat) CCM Combination Control Module CDC Cd Changer CF Convenience Feature CFI Continuous Fuel Injection CKA Crank Angle CKP Crankshaft Position CL Central Locking CLUS Instrument Cluster CMP Camshaft Position CNS Communication and Navigation System CST* Cabriolet Soft Top CTEL Cellular Telephone CTP Closed Throttle Position (Idle) CTU Central Triggering Unit DAS Driver Authorization System DFI* Electronic Distributor-type Fuel Injection DI* Distributor Ignition System DM (USA) Diagnostic Module (Emissions) DTC Diagnostic Trouble Code EA* Electronic Accelerator EAG Electronic Automatic Transmission Control EATC* Electronic Automatic Transmission Control EBR Engine Brake Regulation ECL Engine Coolant Level ECT Engine Coolant Temperature EDC Electronic Diesel Control EDR Electronic Diesel Regulation EDS Electronic Diesel System EDW* Anti-theft Alarm System EFP* Electronic Accelerator EGR Exhaust Gas Recirculation EGS Electronic Transmission Control EI Electronic Ignition (distributorless) EIFI Electronic In-line Fuel Injection

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MERCEDES-BENZ ACRONYMS

EL Exterior Lighting EMSC Electric Mirror, Steering Column Adjustment, Heated Mirrors EPC Electronic Power Control ERE* Electronic In-line Fuel System ESA Electric Seat Adjustment ESC Electric Steering Column Adjustment ESCM Engine System Control Module ESP Electronic Stability Program ETC Electronic Transmission Control ETR Emergency Tensioning Retractor ETS Electronic Traction System EVAP Evaporative Emission Control System EVE Electronic Distributor-type Fuel Injection EZL Distributor Ignition System FAN Fanfare Horns FFS Frame Floor System FOM Folding Outside Mirrors FP Fuel Pump GIM Governor Impulse Method GM Base Module (Master Ecu Controller) HAU Automatic Heater HCS Headlamp Cleaning System HEAT Automatic Heater HFM Hot Film Engine Management HFS Hands Free System HHT Hand Held Tester HM Heated Mirrors HORN Horn Signal System HS Heated Seats IAT Intake Air Temperature IC Instrument Cluster IDC In Dash Controller IFI* Electronic In-line Fuel System(diesel) IFZ Infrared Remote Central Locking IL Interior Lighting IR Infrared IRCL* Infrared Remote Central Locking IRM Inside Rearview Mirror ISC* Idle Speed Control KE Continuous Injection System (Cis) KFB Convenience Feature KI Instrument Cluster KLA Air Conditioning KS Knock Sensor KSS Knock Sensor System LH LH Sequential Fuel Management Bank 1 (1-6 or 1-8 Cylinders) LH2 LH Sequential Fuel Management Bank 2 (7-12 Cylinders) LHS Left Hand Steering LLR Cruise Control LOC Low Compression LS Loudspeaker System MAF Mass Air Flow MAP Manifold Absolute Pressure ME Motor Electronics MIL Malfunction Indicator Lamp (Check Engine) MSC Mirror, Steering Column Adjustment, Heated Mirrors MT Manual Transmission MVA Manifold Vacuum Assist MWH Main Wiring Harness NS Network System (CAN) O2S Oxygen (O2) Sensor OBD On-board Diagnostics OC Oxidation Catalytic Convertor

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MERCEDES-BENZ ACRONYMS

OCP Over-head Control Panel ORM Outside Rearview Mirror OSB Orthopedic Seat Backrest PL Power Lock PML Speed-sensitive Power Steering PMP Partial Intake Manifold Preheater PNP Park/neutral Position PS Power Steering PSE Pneumatic System Equipment PTS Parktronic System PW Power Windows PWM Pulse Width Modulation RB* Roll Bar Control RCL Remote Central Locking RD Radio REST Residual Engine Heat Utilization RHR Retractable Rear Head Restraints RHS Rear Heated Seats RPM Revolutions Per Minute (Engine Speed) RST* Roadster Soft Top RTG Retractable Trunk Lid Grip RTR Remote Trunk Release RV Roadster Soft Top RWD Rear Window Defroster SBE Seat Belt Extender SLO Starter Lock-out SMS Service Microfiche System SOR Seat Occupied recognition SPS Speed-sensitive Power Steering SR Sliding/Pop-up Roof SRS Supplemental Restraint System (Airbag) STH Stationary Heater TB Throttle Body TC Turbo Charger TCM Transmission Control Module TD Speed Signal (Time Division) (EZL) TDC Top Dead Center TIC Transistorized Ignition Control TN Speed Signal (EZL/AKR) TPC Tire Pressure Control TRAP Trap Oxidizer TS Towing Sensor TVV Tank Ventilation Valve TWC Three Way Catalytic Convertor ÜRB Roll Bar Control VAF Volume Air Flow VSS Vehicle Speed Signal WOT Wide Open Throttle (Full Load) WS Wiper System

* USA Acronym only.

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MERCEDES BENZ - USA MODEL IDENTIFIER

MODEL YEARS CHASSIS ENGINE TRANSMISSION STEERING

190C 1961-65 110 121.924 GA190C LO 1

190D 2.2 1984-85 201.122 601.921 717.4/722.4 LO75Z/68

190D 2.5 1986-89 201.126 602.911 717.4/722.4 LS68

190D 2.5 TURBO 1987- 201.128 602.961 722.4 LS68

190DC 1961-65 110 621.912 GA190DC LO 1

190E 2.3 1982-86 201.024 102.961 K 717.4/722.4 LS68

190E 2.3 1982-86 201.024 102.985 KE 717.4/722.4 LS68

190E 2.3 1987-93 201.028 102.985 KE 717.413/722.408 765.903

190E 2.3-16v 1984-87 201.034 102.983 KE 717.4/722.4 765.9

190E 2.5-16v 1988-93 201E25 102.983 KE 717.4/722.4 765.9

190E 2.6 1986-93 201.029 103.942 KE 717.432/722.409 765.903

200 1965-68 110 121.940 GA190C LO 1

200CE 1990-93 124.021 102 KE 717.4/722.400 765.905

200D 1965-68 110 621.918 GA190DC LO 1

200E 1993 124.021 102.963 KE 717.4/722.400 765.905

200TE 1988-92 124.021 102. KE 717.4/722.400 765.905

220 1967-72 115.010 115.920 722.1 L1Z/LS75/765.706

220B 1959-65 111 180.940 GA220B LO 1

220D 1967-72 115.110 615.912 722.2 L1Z/LS75/765.706

220SB 1959-65 111 180.941 GA220SB LO 1

220SE Cabriolet 1951-65 111.023 127.984 GA220SEB LO 1

220SE Coupe 1959-65 111.021 127.984 GA220SEB LO 1

220SEB 1959-65 111 127.982 GA220SEB LO 1

220SEB/C 1951-65 111 127.984 GA220SEB LO 1

230 123.023 115.954 722.1 765.706

230 1965-66 110 180.945 GA230 LO 1

230 1967-72 114.015 180.954 722.2 L1Z/LS75/765.706

230 1973-78 115.017 115.951 716/722.1 L1Z/765.706

230S 1965-68 111 180.945 GA220B,SB LO 1

230SL 1963-68 113.042 127.981 GA230SL LO 1

240D 1973-75 115.117 616.916 716/722.1 L1Z

240D 1976-85 123.123 616.912 716.0,.2/722.1 L1Z/765.706

250 1967-69 114.010 114.920 722.2 L1Z/LS75/765.706

250 1970-75 114.011 130.923 722.2 L1Z/LS75/765.706

250C 1969-75 114.023 130.923 722.2 L1Z/ LS75/ 765.706

250D 1986-93 124.125 602.912 722.414 765.904

250S 1963-68 108 108.920 GA230SL LO 1

250SE 1965-68 108 129.980 GA230SL LO 1

250SE Cabriolet 1965-68 111.023 129.980 GA230SL LO 1

250SE Coupe 1965-68 111.021 129.980 GA230SL LO 1

100

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MERCEDES C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual