Actron CP9135 User Manual [en, es, fr]

15825 Industrial Parkway Cleveland Ohio 44135 USA (EUA)

OBD II

AutoScanner

CP9135

™

Performs diagnostics on OBD II compliant vehicles 1994 and newer

Instructions in English, Spanish, and French Instrucciones en Inglés, Español, y Francés Instructions en Anglais, Espagnol, et les Français

Voltage: 16V Tension: 16V Tension de 16V

FULL ONE (1) YEAR LIMITED WARRANTY

Actron Manufacturing Company (“Actron”) warrants to the original purchaser that this

product will be free from defects in materials and workmanship for a period of

one

(1) year from the date of original purchase. Any unit that fails within this period

will

be replaced or repaired at Actron’s discretion without charge. If you need to

return

product, please follow the instructions below. This warranty does not apply

damages (intentional or accidental), alterations or improper or unreasonable

use.

ACTRON DISCLAIMS ALL EXPRESS WARRANTIES EXCEPT THOSE THAT APPEAR OF ANY WARRANTY PRODUCT LIMITED LONG TO

IN NO CASE SHALL ACTRON BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES BASED UPON ANY LEGAL THEORY INCLUDING, BUT NOT LIMITED TO, DAMAGES FOR LOST PROFITS AND/OR INJURY TO PROPERTY. OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS LIMITATION OR EXCLUSION MAY NOT APPLY TO A SPECIFIC BUYER. THIS WARRANTY GIVES YOU WHICH VAR Y FROM STATE TO STATE.

All on the latest information available from industry sources at the time of publication. No warranty (expressed or implied) can be made for its accuracy or completeness, nor is any responsibility assumed by Actron or anyone connected with it for loss or damages suffered through reliance on any information contained in this manual or misuse of accompanying product. Actron reserves the right to make changes at any time to this manual or accompanying product without obligation to notify any person or organization of such changes.

ABOVE. FURTHER, ACTRON DISCLAIMS ANY IMPLIED WARRANTY

MERCHANTABILITY OF THE GOODS OR FITNESS OF THE GOODS FOR

PURPOSE. (TO THE EXTENT ALLOWED BY LAW, ANY IMPLIED

IS SUBJECT TO ALL THE TERMS AND CONDITIONS OF THIS

WARRANTY. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW

AN IMPLIED WARRANTY LASTS, SO THIS LIMITATION MAY NOT APPLY

A SPECIFIC BUYER.)

SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS

information, illustrations and specifications contained in this manual are based

DISCLAIMER OF WARRANTY

OF MERCHANTABILITY OR OF FITNESS APPLICABLE TO ANY

LIMITATION OF REMEDIES

SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION

If you need to return the unit, please follow this procedure:

1. Call

Actron Te ch Support at 1-(800)228-7667. Our Technical Service Representatives

are

trained to assist you.

2. Proof

of purchase is required for all warranty claims. For this reason we ask that you

retain

your sales receipt.

3. In

the event that product needs to be returned, you will be given a Return Material

Authorization

possible, return the product in its original package with cables and accessories.

4. If

5. Print send

6. You will be responsible for shipping charges in the event that your repair is not covered

number.

the RMA number and your return address on the outside of the package and

to the address provided by your Customer Service representative.

by warranty.

OUT OF WARRANTY REPAIR

If you need product repaired after your warranty has expired, please call Te ch Support at

TO USE YOUR WARRANTY

(800) 228-7667.

You will be advised of the cost of repair and any freight charges.

Table of Contents

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . SF-1

Section 1 - Quick Start

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Quick Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Section 2 - Tool Basics

2.1 Tool Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.1 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-2

2.1.2 OBD II (J1962) Connector . . . . . . . . . . . . . . . . . . . . . . 2-2

2.1.3 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.2 Lists and Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3 Diagnostic Link Connector and Location . . . . . . . . .. 2-3

2.4 Diagnostic Trouble Codes (DTCs). . . . . . . . . . . . . .. 2-3

2.5 This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 2-4

2.6 Vehicle Service Information. . . . . . . . . . . . . . . . . . . . 2-5

Section 3 - Using the Tool

3.1 AutoScanner Connection and Power-Up . . . . . . . . . 3-1

3.2 Read Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3.3 Erase Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-3

3.4 MIL Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-5

3.5 I/M Monitors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-5

3.6 Tool Setup/Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.6.1 Changing Display Contrast. . . . . . . . . . . . . . . . . . . . .. 3-7

3.6.2 Display Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.6.3 Keypad Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.6.4 Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.6.5 Software Identification (SW ID) . . . . . . . . . . . . . . . . . . 3-8

Section 4 - Troubleshooting

4.1 Vehicle Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 AutoScanner Does Not Power Up: . . . . . . . . . . . . . . 4-2

4.3 Link Errors or Erroneous Data. . . . . . . . . . . . . . . . . . 4-3

4.4 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Appendix A - Glossary Appendix B - About OBD II

To prevent accidents that could possibly result in serious injury and/or damage to vehicles and/or test equipment, carefully follow all safety rules and test procedures when working on vehicles.

Always wear ANSI approved eye protection.

Always operate the vehicle in a well-ventilated area. Do not breath exhaust gases — they are very hazardous.

Always keep yourself, tools and test equipment away from all moving or hot engine parts.

SF-1

Always make sure the vehicle is in Park (automatic transmission) or Neutral (manual transmission). Ensure the parking brake is firmly set.

Block the drive wheels. Never leave vehicle unattended while testing.

Never lay tools on vehicle battery. You may short the terminals together causing harm to yourself, the tools or the battery.

Always use caution when working around the ignition coil, distributor cap, ignition wires, and spark plugs. These components can produce High Voltage while the engine is running.

Battery electrolyte is sulfuric-acid and is extremely caustic. If contacted, rinse with water or neutralize with a mild base (i.e. baking soda). If contacted in eyes, flush with water and call a physician immediately.

Never smoke or have open flames near vehicle. Vapors from gasoline and the battery during charge are highly flammable and explosive.

Never use the AutoScannerTM if internal circuitry has been exposed to any moisture. Internal shorts could cause fire and damage to the tool.

Always keep a fire extinguisher suitable for gasoline/electrical/chemical fires readily available.

• When performing road tests, never operate the tool while driving

the vehicle. Always have one person drive the vehicle and an assistant operate the AutoScanner

• Always turn ignition key OFF when connecting or disconnecting

electrical components, unless otherwise instructed.

• Some vehicles are equipped with safety air bags. You MUST follow

vehicle service manual cautions when working around the air bag components or wiring. If the cautions are not followed, the air bag may open up unexpectedly, resulting in personal injury. Note that the air bag can still open up several minutes after the ignition key is off (or even if the vehicle’s battery is disconnected) because of a special energy reserve module.

• Always follow vehicle manufacturer’s warnings, cautions and

service procedures.

SF-2

1.1 Introduction

Congratulations! You've purchased an automotive scanner that can unlock the fault

code information stored in the on-board computer(s) of your car or light truck. This information gives you the power to identify and repair problems that may arise with the operation of your vehicle's engine.

Cars and trucks cannot completely diagnose their problems, and no scanner available can tell you with pinpoint accuracy what is wrong with the vehicle.

Once you have retrieved the diagnostic information from the computer, you have taken the first step in finding and fixing the problem. Now it is time to continue with the rest of the diagnostic process.

Important points to remember:

• Diagnostic Trouble Codes (DTCs) warn us of a symptom or problem with a particular engine system, not a specific part.

• The computer can only report DTCs based on what its sensors are telling it.

• Sometimes, sensors appear to be bad when in fact, they are not.

- A poor connection, broken wire or short circuit may be preventing

the sensor signal from reaching the computer.

- A malfunction in one system may cause a sensor in another

system to report a value that is too high or too low.

• We recommend the use of a vehicle specific service manual to assist you with the diagnostic process.

• Some of the vehicle computer's sensors and actuators can be pretty expensive; it is best to make sure they are defective prior to replacing them!

1-1

Quick Start

The next step in the diagnostic process is to test systems and parts that are suspected to be defective. This testing process may include:

• Sensors

• Fuel injection system

Even when working on modern, computer-controlled vehicles there is no substitute for good old-fashioned troubleshooting.

Once you have isolated and repaired the failed problem(s), you can use your AutoScanner to clear the codes from the computer's memory. This will also turn off your Malfunction Indicator Lamp (MIL), or Check Engine Light, and may reset all Inspection/Maintenance (I/M) monitor statuses to “Not Ready”.

The following Quick Start section will help you begin to use your OBD II AutoScanner right away. Subsequent sections of this manual contain more detailed information to help you get the most out of your scanner. If you have questions not covered in the manual, please call our Technical Support line at 1-800-228-7667 (8:00 - 6:00 EST Monday Friday), or send an email to tech_support@actron.com.

• Ignition system

• Vacuum & Pressure systems

1.2 Quick Start

Connect the OBD II AutoScanner to the vehicle’s Data Link Connector (DLC) which is normally located under the dash on the driver’s side. Once the connection is made, the tool will turn on, boot, and then display the Main Menu. If the display is hard to read, adjust the contrast using the Tool Setup/Test function.

All AutoScanner functions can be performed with the Key On-Engine Off (KOEO). The ERASE function cannot be done with the Key On-Engine Running (KOER).

To retrieve Diagnostic Trouble Codes (DTCs), press the READ key on the AutoScanner. This function can be performed with the KOEO or KOER.

Main Menu

1)Read Codes [

If DTCs are present, they will appear on the display. Use the ▲ or ▼

keys to view the codes. The definition will continuously scroll to the left if it is longer than the display (20 characters). To freeze the scrolling message, press and hold the ENTER key. When done, press the BACK key to return to the Main Menu.

CAUTION! Avoid Cooling Fan! It May Turn On During Test.

Quick Start

1-2

To erase DTCs, press the ERASE key on the AutoScanner. This function must be performed with the KOEO - Do not START engine.

Note: In addition to clearing DTCs, the Erase Codes function may reset the status of the I/M System Monitors to “Not Ready.”

If DTCs are found, the tool will display the quantity and ask the user “Erase Codes? (Y/N).” Pressing the NO key will display the message “Cancelled, Erase Not Performed.” Pressing the YES key will display a scrolling message on the bottom line. Press the BACK key to return to the Main Menu.

“Hard” codes are codes that can be removed only by repairing the faults that they cause; therefore, hard codes will remain in

the computer’s memory until the condition is repaired.

The MIL Status function displays the status of the computer module that commanded the MIL to turn on. If the MIL Status is ON and the MIL is not illuminated with the engine running, then a problem exists in the MIL circuit.

Select the MIL Status function and press the ENTER key. The MIL Status of the computer will display on the AutoScanner. Press the

BACK key to return to the Main Menu.

Main Menu

2)Erase Codes 

Main Menu

3)MIL Status 

The I/M (Inspection and Maintenance) Monitors function displays the state of the vehicle’s OBD II Monitors. Monitors test the operation of emission related systems or components and detect out-of-range values. The vehicle may have to be operated under certain driving conditions to initiate a monitor.

Select I/M Monitors from the Main Menu and press the ENTER key. Use the the list. Note the Monitors present and their status. When done, press the BACK key to return to the Main Menu

Detailed instructions are provided in Section 3 and OBD II background information is provided in Appendix B.

▲ or ▼ keys to scroll through

Main Menu

4)I/M Monitors 

Quick Start

1-3

2.1 Tool Features

The

OBD II AutoScanner

service industry to help diagnose vehicles and assist in troubleshooting procedures. The AutoScanner will perform OBD II functions on compliant vehicles 1994 and newer. No batteries are needed; power is provided from the vehicle’s data link connector (DLC)

was developed by experts in the automotive

BOBD II connector &

cable with strain-relief.

CTwo-line LCD display. DREAD key - performs

the Read Codes function.

EERASE key - performs

the Erase Codes function.

FV YES key - to scroll

up and answer YES.

GW NO key - to scroll

down and answer NO.

HBACK key - go to the

previous screen or level.

IENTER key- selects

displayed items.

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2-1

2.1.1

The AutoScanner uses a two-line liquid crystal display (LCD). The top line contains 10 characters to show function headings, numbers and user prompts. The bottom line contains 20 characters to display selections and code information. Messages longer than the lines will scroll continuously across the display from right to left. Display contrast adjustment is accessed from the Tool Setup/Test menu.

Display

2.1.2

Connects the AutoScanner to the vehicle for power and communication. The AutoScanner will automatically communicate with the vehicle using a protocol built into the software

After initiating a function, the AutoScanner will link with the vehicle.

2.1.3

Do not use solvents such as alcohol to clean the keypad or display. Use a mild nonabrasive detergent and a soft cotton cloth. Do not soak the keypad as water might find its way inside the tool.

2.2

The AutoScanner is designed for ease in navigation and operation. All menu and lists operate the same way. Five functions are selectable by the user. The

Read Codes

can be run using the keys identified in

Section 2.1-Tool Features

Use the

ENTER

item. An arrow icon will be displayed on the right of the bottom line to indicate the scrolling direction available; up (

To return to previous screens, press the

OBD II (J1962) Connector

Cleaning

Lists and Menus

and

Erase Codes

▲

or ▼ keys to scroll and the

key to select the function or

]

), down ([) or both ().

function

Linking

* Please Wait *

1)Read Codes

2)Erase Codes

3)MIL Status

4)I/M Monitors

5)Tool Setup/Test

1)Adjust Contrast

2)Display Test

3)Keypad Test

4)Memory Test

5)SW ID

Main Menu

1)Read Codes [

BACK

key.

The AutoScanner may ask a question which requires a YES or NO response from the user. Press either the condition arises.

Tool Basics

YES

key or NO key when the

2-2

2.3

Diagnostic Link Connector and Location

The AutoScanner communicates with the vehicle’s computer modules via a Diagnostic Link Connector (DLC). OBD II regulations define the physical and electrical specification for the DLC. Certain pins in the connector are dedicated for power and ground. The DLC is also referred to as a J1962 connector. The term J1962 is taken from a physical and electrical specification number assigned by SAE (Society of Automotive Engineers). The standard ensures that all vehicles with OBD II systems use the same connector.

The J1962 specification defines the location of the DLC in the vehicle. The DLC should be located under the dashboard on the driver side of the vehicle. If the DLC is not located under the dashboard as stated, a decal describing its location should be attached to the dashboard in the area the DLC should have been located.

2.4 Diagnostic Trouble Codes (DTCs)

Diagnostic Trouble Codes (DTCs) consist of a three-digit code preceded by an alphanumeric designator. When the on-board computer recognizes and identifies a problem, a DTC for that fault is stored in memory. These codes are intended to help the user determine the root cause of a problem. The format and type of DTCs is summarized on the next page.

J2012 is a standard for all DTCs established by the Society of Automotive Engineers (SAE). Codes and the definitions assigned by this specification are known as Generic (or Global) OBD II codes. OBD II requires compliance of this standard, and has made it a standard for all cars, light trucks, APVs, MPVs, and SUVs sold in the U.S. from Model Year 1996 and newer. Codes not reserved by the SAE are reserved for the manufacturer and referred as Manufacturer Specific.

Periodically, new DTCs are developed and approved by the SAE. Upon approval of the new codes, the AutoScanner’s software will be updated. There is no established time period that updates are made to the database.

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2-3

For more information regarding DTC updates, please call our Technical Support line at send an email to

1-800-228-7667

tech_support@actron.com.

SAE J2012 OBD II DTC Recommended Standard

(8:00 - 6:00 EST Monday - Friday), or

Bx - Body Cx

- Chassis

- Powertrain

- Network Comm.

= 0, 1, 2 or 3

Example:

P0101 –Mass or Volume Air Flow Circuit

Powertrain Codes P0xxx P1xxx P2xxx P30xx-P33xx P34xx-P39xx

Chassis C0xxx C1xxx C2xxx C3xxx

Range/Performance Problem

- Generic (SAE)

- Manufacturer Specific

- Generic (SAE)

- Manufacturer Specific

- Generic (SAE)

Codes

- Generic (SAE)

- Manufacturer Specific

- Generic (SAE)

P 0 1 0 1

Vehicle Specific System

Body

Codes

- Generic (SAE)

B0xxx

- Manufacturer Specific

B1xxx

- Manufacturer Specific

B2xxx

- Generic (SAE)

B3xxx

Network

- Generic (SAE)

U0xxx

- Manufacturer Specific

U1xxx

- Manufacturer Specific

U2xxx U3xxx

- Generic (SAE)

Specific Fault Designation

Communication Codes

2.5 This Manual

This manual provides step-by-step procedures to operate the OBD II AutoScanner. Specific diagnostics for the vehicle may be found in applicable service manuals listed in Section 2.6. Information about OBD II can be found in Appendix B - OBD II Background.

Warnings, Cautions and Notes These are identified with the following symbols. Please read and

understand the Safety Precautions and adhere to them while testing the vehicle.

2-4

The Warning symbol identifies hazards that may cause serious harm and injury.

The Caution symbol alerts the operator of potential

noncritical harm or damage to equipment.

This symbol identifies special information.

Tool Basics

2.6 Vehicle Service Information

Vehicle service manuals containing additional diagnostic information are available at most auto parts stores or the local library. If unable to locate them at those locations, write the below listed publishers for availability and pricing. Please be sure to specify the make, model and year of vehicle.

Vehicle Service Manuals

Chrysler, Plymouth, Dodge, Jeep, Eagle:

Dyment Distribution Service Publications

12200 Alameda Drive Strongsville, OH 44136

www.techauthority.daimlerchrysler.com

Ford, Lincoln & Mercury:

Ford Publication Department Helm Incorporated

P.O. Box 07150 Detroit, MI 48207

www.helminc.com

Cadillac, Chevrolet,

Buick, GEO, GMC, Oldsmobile, Pontiac;

Honda, Isuzu, Suzuki,

Acura, Kia, Hyundai & Saab:

Helm Incorporated P.O. Box 07130 Detroit, MI 48207

www.helminc.com

Saturn:

Adistra Corporation c/o Saturn Publications

101 Union St. P.O. Box 1000 Plymouth, MI 48170

Chilton Book Company Chilton Way Radnor, PA 19089

www.edmunds.com/edweb/Chilton

Mitchell Manuals, Inc.

Cordura Publications P.O. Box 26260 San Diego, CA 92126

www.mitchellrepair.com

Haynes Publications Inc. 861 Lawrence Drive Newbury Park, CA 91320

www.haynes.com

Haynes Publications Inc. 1299 Bridgestone Parkway LaVergne, TN 37086

www.haynes.com

JENDHAM, Inc. 13230 Evening Creek Drive, Suite #202 San Diego, CA 92128

www.jendham.com

Motor’s Auto Repair Manual Hearst Company 250 W. 55th Street New York, NY 10019

Suitable manuals have titles such as:

- “Electronic Engine Controls”

- “Fuel Injection and Electronic Engine Controls”

- “Emissions Control Manual” ... or similar titles

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2-5

3.1 AutoScanner Connection and Power-Up

Locate the DLC. If not found, refer to

Section 2.3.

The AutoScanner will not harm the vehicle.

Remove the protective cap and connect the AutoScanner’s 16-pin J1962 connector. The AutoScanner will immediately power-up.

The AutoScanner displays its name for a brief period and then begins “Loading Software.”

OBD II

Auto Scanner Loading Software.........

If the

▲ key is pressed and held while software is loading, the

Software ID will display until the key is released, and then the Main Menu will display.

Main Menu

Software ID: 392A

When the Main Menu displays, the AutoScanner is ready to use. Refer to Section 3.6 - Tool Setup/Test and Section 4 -

Troubleshooting if problems occur. More information about OBD II can be found in Appendix B - OBD II

Background.

1)Read Codes [

Using the Tool

3-1

3.2 Read Codes

The Read Codes function retrieves Diagnostic Trouble Codes (DTCs) from the vehicle’s computer modules. This function can be performed with the KOEO or KOER.

There are two types of codes, Malfunction Indicator Lamp (MIL) codes and Pending codes. An icon ( are Pending codes.

MIL Codes: These codes cause the computer to illuminate the MIL when an emission related or driveability fault occurs. The MIL is also known as the "service engine soon" or "check engine lamp”. The computer will illuminate the MIL when the engine is running and remain in the vehicle’s memory until the fault is repaired.

Pending Codes: These codes are also referred as “continuous monitor” and “maturing codes”. An intermittent fault will cause the computer to store a code in memory. If the fault does not occur within 40 warm-up cycles, the code will be cleared from memory. If the fault occurs a specific number of times, the code will mature into a DTC and the MIL will turn on.

Changing any part without first isolating the circuit or system may result in the replacement of good components.

) will be displayed next to DTCs that

Main Menu

1)Read Codes [

Before performing this function, read and understand the Safety Precautions and Section 2 - Tool Basics.

CAUTION! Avoid Cooling Fan! It May Turn On During Test.

Press the READ key to initiate the Read Codes function. The

AutoScanner will retrieve the DTCs stored in the vehicle’s computer module(s). This function can also be run by selecting Read Codes from the Main Menu.

If a Link Error message displays, make sure the OBD II connector is securely attached, and the ignition key is ON. Cycle

the ignition key to OFF for 10 seconds, then ON. This may be required to reset the computer. If required, select “Yes” to try again. If the problem still exists, refer to Section 4: Troubleshooting.

Using the Tool

Reading

* Data From Vehicle *

3-2

If one DTC is retrieved, the AutoScanner will display the DTC number and type (MIL or pending) on the top line, and the definition on the bottom. If more than one DTC is present, the top line will also display the code index (n/x), i.e. 1 of 3. This and the DTC number will alternate on the display while the bottom line shows the definition.

P0452 

EVAP Emission Cont [

If the definition is longer than the display, it will continuously scroll to the left. To freeze the scrolling message, press and hold the ENTER key. Use the BACK key to return to the Main Menu.

• Definitions for Generic (or Global) DTCs will be displayed on the bottom line. These definitions can be found in the vehicle’ service manual (refer to Section 2.6 - Vehicle Service Information or on the enclosed product CD).

If no DTCs are present, the message “PASS, No Codes Returned” will display. Press the BACK key to return to the Main Menu.

▲ or ▼ keys to view each DTC. When done, press the

Do not disconnect the AutoScanner until codes have been recorded. When power is removed, the AutoScanner’s memory is cleared.

1 of 3 

ion Control System [

PASS 

No Codes Returned

3.3 Erase Codes

The Erase Codes function deletes the DTCs from the vehicle’s computer memory. Perform this function only after the systems have been checked completely and DTCs have been documented. This function should be performed with KOEO - Do not START engine.

After servicing the vehicle, delete the stored DTCs and verify no codes have been reset. If DTCs return, the problem has not been corrected or other faults are present.

In addition to clearing DTCs, the Erase Codes function resets the status of the I/M System Monitors to “Not Ready.”

3-3

Using the Tool

To Erase Codes, press the ERASE key. This function can also be run by selecting Erase Codes from the Main Menu.

Before erasing codes, the AutoScanner will perform the Read Codes function and display the number of DTCs stored in the vehicle’s computer memory.

CAUTION! Avoid Cooling Fan! It May Turn On During Test.

If no DTCs are present, then press ENTER to return to the Main Menu.

If DTCs are found, the tool will display the quantity and ask the user “Erase Codes? (Y/N).” Pressing the NO key will display the message “Cancelled, Erase Not Performed.” Press the BACK key to return to the Main Menu.

Pressing the YES key will display a scrolling message on the bottom line. Turn key On, engine Off and then press the ENTER key.

Main Menu

2)Erase Codes 

No Codes

Press ENTER To Exit

5 Codes

Erase Codes? (Y/N)

Verify Engine Off, Key

The AutoScanner will perform Read Codes again to check the number of DTCs erased.

If all DTCs have been erased, a message “No Codes Remain (Press ENTER)” will scroll across the bottom line.

If DTCs still exist, the number will be displayed. The faults must be repaired to remove these DTCs. Press ENTER to return to the Main

Menu.

“Hard” codes are codes that can be removed only by repairing the faults that they cause; therefore, hard codes will remain in

the computer’s memory until the condition is repaired.

Using the Tool

ERASE DONE

No Codes Remain (Pres

3-4

3.4 MIL Status

The MIL (Malfunction Indicator Lamp) Status function displays the state of the computer module that commanded the MIL to turn on. A request is sent to the computer module(s) to state whether they are commanding the MIL to turn ON. If the MIL Status is ON and the MIL is not illuminated with the engine running, then a problem exists in the MIL circuit. Refer to “Diagnostic Circuit Check” in the service repair manual.

Some manufacturers will turn the MIL Off if a certain number of drive cycles occur without the same fault being detected. The

DTCs related to a MIL are erased from the computer’s memory after 40 warm-up cycles if the same fault is not detected.

Select the MIL Status function and press the ENTER key.

The MIL Status will display on the top line and a scrolling message on the bottom indicating if the MIL lamp should be ON or OFF.

Main Menu

3)MIL Status 

MIL - ON

MIL Lamp Should be On

When done, press the BACK key to return to the Main Men

3.5 I/M Monitors

Using the Tool

3-5

Currently, there are eleven OBD II Monitors defined and required by

($0E)

the U.S. Environmental Protection Agency (EPA), but not all monitors are supported by all vehicles. The OBD II monitors and their abbreviation are listed below.

Abbreviation

Misfire ..................... Misfire

Fuel Sys ................... Fuel System

Comprehens ............. Comprehensive Components

Catalyst................... Catalyst

Heated Cat .............. Heated Catalyst

Evap Sys ................... Evaporative System

Sec Air ...................... Secondary AIR

A/C Refrig .............. Air Conditioning Refrigerant

O2 Sensor................. Oxygen Sensor

HO2 Sensor .............. Oxygen Heater Sensor

EGR Sys ...................... Exhaust Gas Recirculation System

Select I/M Monitors from the Main Menu and press the ENTER key.

The top line will display the I/M Monitor and the second line will display its status. Use the keys to scroll through the monitors.

• A status of “Ready” means that the required driving conditions

for that monitor have been meet and it passed.

• A status of “Not Ready” means that the required driving

conditions for that monitor have not been met or it did not pass.

• A status of “Not Applicable (N/A)” means the vehicle does not

support that monitor.

Note the Monitors present and their status. When done, press the

BACK key to return to the Main Menu

Definition

omprehens

Comprehens($1F)

Main Menu

Comprehens($D1)

4)I/M Monitors 

▲ or ▼

Fuel Sys

Ready 

3.6 Tool Setup/Test

The Tool Setup/Test functions allow the user to adjust the display’s contrast and perform self-tests.

Using the Tool

Main Menu

5)Tool Setup/Test ]

3-6

3.6.1 Changing Display Contrast

The contrast is displayed as a percent value ranging from 100% to 5% and can be changed by 5% intervals .

In the Tool Setup/Test menu, the first function is Adjust Contrast. Press the ENTER key and then use the

▲ or ▼ keys to increase or

decrease the contrast. Holding down the steps. When done, press the ENTER key to return to the Tool Setup/Test menu.

Contrast settings are not saved after the tool is turned OFF. Contrast is reset to the manufacturers setting when powered-up.

This is a self-test to inspect the AutoScanner’s LCD display. The test will turn every pixel black.

Select Display Test from the Tool Setup/Test menu and press ENTER.

The display will toggle between the two following screens every 3 seconds. Look for missing spots in the solid black characters. When done, press the BACK key to return to the Tool Setup/Test menu.

▲ or ▼ keys changes the contrast in that direction in 5%

To quickly change the contrast after powering the AutoScanner, press the ▼ key four (4) times and then the ENTER key twice.

3.6.2 Display Test

][ Change

90% ENTER When Done

Tool Setup

2)Display Test 

LCD Test

Press BACK To Quit

3.6.3 Keypad Test

The Keypad Test is used to check the functionality of the AutoScanner’s Keypad.

Select Keypad Test from the Tool Setup/Test menu and press the ENTER key.





Tool Setup

3)Keypad Test 

3-7

Using the Tool

Each time you press a key, its name should appear on the display. For example, if you press the key, the screen will display “UP / YES.” If key’s name does not display, then the key is not working. Press the other keys to verify proper operation.

Check the BACK key last. When the BACK key is pressed, the AutoScanner will return to the Tool Setup/Test menu. If you are not returned to this menu, then the

BACK key is not working.

3.6.4 Memory Test

If the AutoScanner has trouble performing functions, the Memory Test should be performed.

From the Tool Setup/Test menu, select the Memory Test option and press ENTER to begin.

As the memory is tested, its address is displayed on the bottom line. After the memory test is done, either a “TEST PASS” or “TEST FAIL” message is displayed.

▲ /YES

ROM Test

Testing Addr a500

UP / YES

Press Any Key

BACK

Leaving Keypad Test

Tool Setup

4)Memory Test ]

TEST PASS

Press Any Key

Press any key to return to the Tool Setup/Test menu.

3.6.5 Software Identification (SW ID)

The Software Identification is needed when contacting customer support. Note this in the manual for reference.

From the Tool Setup/Test menu, select the SW ID option and press ENTER. Note this in the manual for reference.

Tool Setup

5)SW ID ]

Press any key to return to the Tool Setup/Test menu.

Using the Tool

SW ID: 47H5

Press Any Key

3-8

4.1 Vehicle Inspection

Many problems can be found by performing a visual and “hands-on” under-the-hood inspection before starting any diagnostic procedure.

• Has the vehicle been serviced recently?

Sometimes things are reconnected in the wrong place, or not at all.

• Do not take shortcuts. Inspect hoses and

wiring which may be difficult to see because of location (under air cleaner housing, alternators and similar components).

• Inspect the air cleaner and ductwork for

defects.

• Check sensors and actuators for

damage.

• Inspect all vacuum hoses for:

- Correct routing. Refer to vehicle

service manual, or Vehicle Emission Control Information (VECI) decal located in the engine compartment.

- Pinches and kinks.

- Splits, cuts or breaks.

• Inspect electrical wiring for:

- Damaged insulation caused by sharp

objects (a common problem) or by hot surfaces such as engine and exhaust manifold.

- Corroded and broken wires.

4-1

Troubleshooting

• Carefully inspect electrical connectors for:

- Corrosion or foreign debris on pins.

- Bent or damaged pins.

- Recessed contacts not seated properly in housing.

- Bad wire crimps to terminals.

Connector problems are common in vehicles. Inspect carefully. Some connectors use a special grease, called dielectric grease,

on the contacts to prevent corrosion. Do not remove. If required, apply more grease to the connector. The grease can be obtained from a dealership or auto parts store.

4.2 AutoScanner Does Not Power Up

• Make sure the AutoScanner’s DLC is connected correctly to the

vehicle’s DLC. Verify the pins are clean and fully seated in the DLC.

(GND)

• The AutoScanner requires a

minimum of 8 volts between pin 16 (BAT+) and pin 4 (GND) to power up. Use the flowchart provided below to troubleshoot.

WARNING! Never Lay Tools On Vehicle Battery. You May Short The Terminals Together Causing Harm To Yourself, The Tools

Or The Battery.

AutoScanner will not

power up.

battery

charged?

PIN 16 (BAT+)

fully

Charge battery.

Measure Voltage

between Pins 16 and 4.

Above 8V?

YES

Contact Actron.

Troubleshooting

Measure resistance

between Pin 4 and

Open exists in power

circuit. Check for a blown

fuse or an open wire. Refer

to a service manual.

YES

frame ground.

less than

ohms?

YES

Repair Ground

circuit.

Refer to a

service manual.

4-2

4.3 Link Errors or Erroneous Data

A Link Error occurs if the vehicle’s computer(s) stops communicating with the AutoScanner. When this happens, the AutoScanner prompts the user to try again. Press the YES key to try again or the NO key to return to the Main Menu.

If the AutoScanner displays Link Errors when attempting to read or erase codes, check the following:

• Verify ignition key is ON - not in the

ACCESSORIES position.

• Make sure the AutoScanner’s cable is

securely connected to the vehicle’s DLC.

• Examine the DLC closely and check for

cracked or recessed pins, or for any substance that could prevent a good electrical connection.

•Verify that the vehicle you are testing is an OBD II compliant vehicle. Just because it has the OBD II J1962 DLC does not mean the vehicle is OBD II compliant. Inspect the vehicle’s VECI decal for a statement of OBD II compliance.

• Test for continuity between the DLC wiring and the computer. In

an extreme case there may be a broken wire.

• With the KOEO, check the vehicle for blown fuses . The computer and DLC usually use separate fuses. If the fuse for the computer fuse is blown, it cannot transmit data. The fuses may be located on the fuse block in the passenger compartment.

• Make sure the computer has a good ground. If the computer has a ground directly to the case, clean the connection and apply a conductive (dielectric) grease to the mating surfaces.

• With the KOEO, verify the battery voltage is at least 10.5V; the minimum voltage to power the computer.

• As a last resort, the computer may be defective. Refer to the vehicle service manual to diagnose the computer.

Link Error

Try Again?

4.4 Technical Support

If the AutoScanner is not working correctly after the checks and corrections above, contact technical support personnel at 1-800-228-7667 (8:00 - 6:00 EST Monday - Friday), or send an email to tech_support@actron.com. Be prepared to provide the AutoScanner’s Software ID.

Troubleshooting

4-3

A/C:

Air Conditioning.

A/F:

Air/Fuel ratio. The proportion of air and fuel delivered to the cylinder for combustion. For example, an A/F ratio of 14:1 denotes 14 times as much air as fuel in the mixture. A typical ideal A/F ratio is 14.7:1.

AC Clutch Relay:

The PCM uses this relay to energize the A/C clutch, turning the A/C system on or off.

AC Pressure Sensor:

Measures air conditioning refrigerant pressure and sends a voltage signal to the PCM.

AC Pressure Switch:

A mechanical switch connected to the A/C refrigerant line. The switch is activated (sending a signal to the PCM) when the A/C refrigerant pressure becomes too low.

Actuator:

Actuators such as relays, solenoids, and motors allow the PCM to control the operation of vehicle systems.

Air Injection Reaction (AIR) System:

An emission control system operated by the PCM. During cold starts, an air pump injects outside air into the exhaust manifold to help burn hot exhaust gases. This reduces pollution and speeds warm-up of oxygen sensors and catalytic converters. After the engine is warm, the air will either be “dumped” back to the atmosphere (or into the air cleaner assembly) or sent to the catalytic converter.

Bank 1:

The standard way of referring to the bank of cylinders containing cylinder #1. In-line engines have only one bank of cylinders. Most commonly used to identify the location of oxygen sensors. See O2S, Sensor 1, Sensor 2.

Bank 2:

The standard way of referring to the bank of cylinders opposite cylinder #1. Found on V-6, V-8, V-10, etc. and horizontally opposed engines. Most commonly used to identify the location of oxygen sensors. See O2S, Sensor 1,

Sensor 2.

BARO:

Barometric Pressure Sensor. See MAP Sensor.

Boost Control Solenoid:

A solenoid that is energized by the PCM, in order to control supercharger boost pressure.

Brake Switch Signal:

An input signal to the PCM indicating that the brake pedal is being pressed. This signal is typically used to disengage Cruise Control systems and Torque Converter Clutch (TCC) solenoids. See also TCC.

CAM:

Camshaft Position Sensor. Sends a frequency signal to the PCM in order to synchronize fuel injector and spark plug firing.

CARB:

California Air Resources Board. Governing body for emissions control in California.

Glossary

A-1

CKP REF:

Crankshaft Position Reference.

CKP: Crankshaft Position. See CPS.

Closed Loop (C/L):

A feedback system that uses the O2 sensor(s) to monitor the results of combustion. Based on the signal(s) from the O2 sensor(s), the PCM modifies the air/fuel mixture to maintain optimum performance with lowest emissions. In closed loop mode, the PCM can “fine tune” control of a system to achieve an exact result.

CO:

Carbon Monoxide

Continuous Memory Codes: See Pending Codes.

CPS:

Crankshaft Position Sensor. Sends a frequency signal to the PCM. It is used to reference fuel injector operation and synchronize spark plug firing on distributorless ignition systems (DIS).

CTS:

Coolant Temperature Sensor. A resistance sensor that sends a voltage signal to the PCM indicating the temperature of the coolant. This signal tells the PCM whether the engine is “cold” or “warm”.

Data Link Connector (DLC):

The interface port between the vehicle’s on-board computer and a diagnostic tool. Vehicles with OBD II use a 16-pin connector located in the passenger compartment.

Data Stream:

The actual data communications sent from the vehicle’s PCM to the data connector.

DEPS:

Digital Engine Position Sensor.

Detonation: See Knock.

DTC:

Diagnostic Trouble Code. Indicates a malfunction flagged by the vehicle’s computer.

DI/DIS:

Direct Ignition/Distributorless Ignition System. A system that produces the ignition spark without the use of a distributor.

Duty Cycle:

A term applied to signals that switch between “on” and “off”. Duty cycle is the percentage of time the signal is “on”. For example, if the signal is “on” only one fourth of the time, then the duty cycle is 25%. The PCM uses duty cycle type signals to maintain precise control of an actuator.

ECT:

Engine Coolant Temperature sensor. See CTS.

EFI:

Electronic Fuel Injection. Any system where a computer controls fuel delivery to the engine by using fuel injectors.

EGR:

Exhaust Gas Recirculation. The PCM uses the EGR system to recirculate exhaust gases back into the intake manifold to reduce emissions. EGR Recirculation is used only during warm engine cruise conditions. EGR flow at other times can cause stalling or no starts.

EPA:

Environmental Protection Agency.

ESC:

Electronic Spark Control. An ignition system function that warns the PCM when “knock” is detected. The PCM will then retard spark timing to eliminate the knocking condition.

EST:

Electronic Spark Timing. An ignition system that allows the PCM to control spark advance timing. The PCM determines optimum spark timing from sensor information

—

engine speed,

A-2

Glossary

throttle position, coolant temperature, engine load, vehicle speed, Park/Neutral switch position, and knock sensorcondition

EVAP:

Evaporative Emissions System.

Hall Effect Sensor:

Any of a type of sensor utilizing a permanent magnet and a transistorized Hall Effect switch. Hall Effect type sensors may be used to measure speed and position of the crankshaft or camshaft — for spark timing and fuel injector control.

HO2S: Heated Oxygen Sensor. See O2S.

IAC:

Idle Air Control. A device mounted on the throttle body which adjusts the amount of air bypassing a closed throttle so that the PCM can control idle speed.

ICM:

Ignition Control Module.

I/M:

Inspection and Maintenance.

ISC:

Idle Speed Control. A small electric motor mounted on the throttle body and controlled by the PCM. The PCM can control idle speed by commanding the ISC to adjust its position.

Knock:

Uncontrolled ignition of the air/fuel mixture in the cylinder. Also referred to as detonation or ping. Knock indicates extreme cylinder pressures or “hotspots” which are causing the air/fuel mixture to detonate prematurely.

Knock Sensor (KS):

Used to detect engine detonation or “knock.” The sensor contains a piezoelectric element and is threaded into the engine block. Special construction makes the element sensitive only to engine vibrations associated with detonation.

KOEO:

Key On, Engine Off.

KOER:

Key On, Engine Running.

LCD:

Liquid Crystal Display.

LT:

Long Te rm fuel trim.

M/T:

Manual transmission or manual transaxle.

MAF:

Mass Air Flow Sensor. Measures the amount and density of air entering the engine and sends a frequency or voltage signal to the PCM. The PCM uses this signal in its fuel delivery calculations.

MAP:

Manifold Absolute Pressure Sensor. Measures intake manifold vacuum or pressure and sends a frequency or voltage signal (depending on sensor type)

to the PCM. This gives the PCM

information on engine load for control of fuel delivery, spark advance, and EGR flow.

MAT:

Manifold Air Temperature sensor . A resistance sensor in the intake manifold that sends a voltage signal to the PCM indicating the temperature of the incoming air. The PCM uses this signal for fuel delivery calculations.

MIL:

Malfunction Indicator Lamp. The MIL is most commonly known as the Check Engine Light. Also labeled Service Engine Soon, Power Loss or Power Limited.

Monitor:

A test performed by the on-board computer to verify proper operation of emission related systems or components.

MPFI or MFI:

Multi-Port Fuel Injection. MPFI is a fuel injection system using one (or more) injector(s) for each cylinder. The injectors are mounted in the intake manifold, and fired in groups rather than individually.

Glossary

A-3

NOx:

Oxides of Nitrogen. A pollutant. The EGR system injects exhaust gases into the intake manifold to reduce these gases at the tailpipe.

O2S:

Oxygen Sensor. Generates a voltage of

0.6 to 1.1 volts when the exhaust gas is rich (low oxygen content). The voltage changes to 0.4 volts or less when the exhaust gas is lean (high oxygen content). This sensor only operates after it reaches a temperature of approximately 349°C (660°F). O2 sensors are usually found both upstream and downstream of the catalytic converter. The PCM uses these sensors to fine tune the air-fuel ratio and to monitor the efficiency of the catalytic converter. See Bank 1, Bank

2, Sensor 1, Sensor 2. ODM:

Output Device Monitor.

OBD II:

On-Board Diagnostics, Second Generation. OBD II is a U.S. Government-mandated standard requiring all cars and light trucks to have a common data connector, connector location, communication protocol, DTCs and code definitions. OBD II first appeared on vehicles in late 1994, and is required to be present on all cars sold in the US after January 1, 1996.

Open Loop (O/L):

A control system mode that does not monitor the output to verify if the desired results were achieved. A fuel delivery system will usually operate in open loop mode during cold engine warm-up because the oxygen sensors are not yet ready to send a signal. Without the oxygen sensor signal, the computer cannot check the actual results of combustion.

P/N:

Park/Neutral Switch. This switch tells the PCM when the gear shift lever is in the Park or Neutral position. When in Park or Neutral, the PCM will operate the engine in an “idle” mode.

PCM:

Powertrain Control Module. The “brains” of the engine control system housed in a metal box with a number of sensors and actuators connected via a wiring harness. Its job is to control fuel delivery, idle speed, spark advance timing, and emission systems. The PCM receives information from sensors, then energizes various actuators to control the engine. The PCM is also known as the ECM (Engine Control Module).

PROM:

Programmable Read-Only Memory. The PROM contains programming information the PCM needs to operate a specific vehicle model/engine combination.

Pending Codes:

Also referred to as Continuous Memory codes and Maturing Diagnostic Trouble codes. These codes are set when intermittent faults occur while driving. If the fault does not occur after a certain number of drive cycles, the code is erased from memory.

Purge Solenoid:

Controls the flow of fuel vapors from the carbon canister to the intake manifold. The canister collects vapors evaporating from the fuel tank, preventing them from escaping to the atmosphere and causing pollution. During warm engine cruise conditions, the PCM energizes the Purge Solenoid so the trapped vapors are drawn into the engine and burned.

Reluctance Sensor:

A type of sensor typically used to measure crankshaft or camshaft Speed and/or position, driveshaft speed, and wheel speed

ROM:

Read-Only Memory. Permanent programming information stored inside the PCM, containing the information the PCM needs to operate a specific vehicle model/engine combination.

SAE:

Society of Automotive Engineers.

A-4

Glossary

Sensor:

Any device that reports information to the PCM. The job of the sensor is to convert a parameter such as engine temperature into an electrical signal that the PCM can understand.

Sensor 1:

A standard term used to identify the location of oxygen sensors. Sensor 1 is located upstream of the catalytic converter. See O2S, Bank 1, Bank 2.

Sensor 2:

A standard term used to identify the location of oxygen sensors. Sensor 2 is located downstream of the catalytic converter. See O2S, Bank 1, Bank 2.

SFI or SEFI:

Sequential Fuel Injection or Sequential Electronic Fuel Injection. A fuel injection system that uses one or more injectors for each cylinder. The injectors are mounted in the intake manifold, and are fired individually.

ST:

Short Te rm fuel trim.

TBI:

Throttle Body Injection. A fuel injection system having one or more injectors mounted in a centrally located throttle body, as opposed to positioning the injectors close to an intake valve port. TBI is also called Central Fuel Injection (CFI) in some vehicles.

TDC:

To p Dead Center. When a piston is at its uppermost position in the cylinder.

Throttle Body:

A device which performs the same function as a carburetor in a fuel injection system. On a throttle body injection (TBI) system, the throttle body is both the air door and the location of the fuel injectors. On port fuel injection systems (PFI, MPFI, SFI, etc.) the throttle body is simply an air door. Fuel is not added until the injectors at each intake port are activated. In each case, the throttle body is attached to the accelerator pedal.

Glossary

TPS:

Throttle Position Sensor. Potentiometer-type sensor connected to the throttle shaft. Its voltage signal output increases as the throttle is opened. The PCM uses this signal to control many systems such as idle speed, spark advance, fuel delivery, etc.

TTS:

Transmission Temperature Sensor. A resistance sensor mounted in the transmission housing in contact with the transmission fluid. It sends a voltage signal to the PCM indicating the temperature of the transmission.

VECI:

Vehic le Emission Control Information. A decal located in the engine compartment containing information about the emission control systems found on the vehicle. The VECI is the authoritative source for determining whether a vehicle is OBD II compliant.

VIN:

Vehic le Identification Number. This is the factory-assigned vehicle serial number. This number is stamped on a number of locations throughout the vehicle, but the most prominent location is on top of the dashboard on the driver’s side, visible from outside the car. The VIN includes information about the car, including where it was built, body and engine codes, options, and a sequential build number.

VSS:

Vehicle Speed Sensor. Sends a frequency signal to the PCM. The frequency increases as the vehicle moves faster to give the PCM vehicle speed information used to determine shift points, engine load, and cruise control functions.

WOT:

Wide-Open Throttle. The vehicle operating condition brought about when the throttle is completely (or nearly) open. The PCM will typically deliver extra fuel to the engine and de-energize the A/C compressor at this time for acceleration purposes. The PCM uses a switch or the Throttle Position Sensor to identify the WOT condition.

A-5

OBD II

In 1994, manufacturers began equipping vehicles with a new class of computer technology which puts more processing power in the vehicle than ever before. It is called On-Board Diagnostics, Second Generation (OBD II) and offers increased system monitoring and diagnostic information. Beginning January 1, 1996, vehicles sold in the U.S. are required to be OBD II compliant. However, a few vehicles were exempt since no changes were made to the engine. Most domestic manufacturers began using this system on some vehicles beginning as early as

1994. OBD II systems are designed to meet or exceed standards and regulations to

improve air quality. These standards and regulations are primarily set forth by the Environmental Protection Agency (EPA) Clean Air Act of 1990. Most of the standards and regulations were developed by the California Air Resources Board (CARB). OBD II systems are unique in that they possess the capability of monitoring the performance of emission related systems and their components; to detect hard and intermittent faults that may cause a vehicle to pollute.

This new system stores a large library of general trouble codes along with manufacturer-specific codes, some of which can be accessed with the tool. These codes cover:

B-Codes . . . . . . . Body Systems

C-Codes . . . . . Chassis Systems

Now, basic terms are standardized and all generic (global) codes share a common format and terminology established by the manufacturers and the Society of Automotive Engineers (SAE).

Basics of Computer-Controlled Vehicles

This section explains the engine computer control system, the types of sensors and how the computer controls engine fuel delivery, idle speed and timing. Additional information may be found in technical support books at your local library or auto parts store. The more you know about the computer system, the better you can diagnose vehicle computer problems.

Computer regulations for lower emissions levels and improved fuel economy. This began in the early 1980’s when basic mechanical systems were no longer able to accurately control key engine parameters. A computer could be programmed to control the engine under various operating conditions, making the engine more reliable. While these early systems were very limited in the scope of their control, providing only 10 to 14 trouble codes, they did help guide the vehicle repair process.

Today, efficient than ever before.

U-Codes . Network Communications

P-Codes . . . . . . Powertrain Systems

controls were originally installed on vehicles to meet federal government

computer controls have made cars and trucks faster, cleaner, and more

B-1

About OBD II

+ 90 hidden pages