Equus 3130 User Manual

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Table of Contents

i OBD2

Title Page No.

INTRODUCTION

What is OBD? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

YOU CAN DO IT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

SAFETY PRECAUTIONS

Safety First! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

ABOUT THE SCAN TOOL

Vehicles Covered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Adjustments and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SCAN TOOL CONTROLS

Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

ONBOARD DIAGNOSTICS

Diagnostic Trouble Codes (DTCs) . . . . . . . . . . . . . . . . . . . . . . 15

PREPARATION FOR TESTING

Preliminary Vehicle Diagnosis Worksheet . . . . . . . . . . . . . . . . 17

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Vehicle Service Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

USING THE SCAN TOOL

Code Retrieval Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Erasing Diagnostic Trouble Codes (DTCs) . . . . . . . . . . . . . . . . 27

I/M Readiness Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

LIVE DATA MODE

Viewing Live Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Customizing Live Data (PIDs) . . . . . . . . . . . . . . . . . . . . . . . . . 36

Recording (Capturing) Live Data . . . . . . . . . . . . . . . . . . . . . . . 37

Live Data Playback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

ADDITIONAL TESTS

O2 Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Non-Continuous Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

System Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Vehicle Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

GENERIC (GLOBAL) OBD2 PID LIST . . . . . . . . . . . . . . . . . . . . . . . 50

GLOSSARY

Glossary of Terms and Abbreviations . . . . . . . . . . . . . . . . . . . 55

WARRANTY AND SERVICING

Limited One Year Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Introduction

WHAT IS OBD?

OBD2 1

WHAT IS OBD?

The OBD2 Scan Tool is designed to work on all OBD 2 compliant

vehicles. All 1996 and newer vehicles (cars, light trucks and

SUVs) sold in the United States are OBD 2 compliant.

One of the most exciting improvements in the automobile industry was the addition of on-board diagnostics (OBD) on vehicles, or in more basic terms, the computer that activates the vehicle’s “CHECK ENGINE” light. OBD 1 was designed to monitor manufacturer-specific systems on vehicles built from 1981 to 1995.Then came the development of OBD 2, which is on all

1996 cars and light trucks sold in the U.S.Like its predecessor, OBD 2 was adopted as part of a government mandate to lower vehicle emissions.But what makes OBD 2 unique is its universal application for all late model cars and trucks - domestic and import. This sophisticated program in the vehicle’s main computer system is designed to detect failures in a range of systems, and can be accessed through a universal OBD 2 port, which is usually found under the dashboard. For all OBD systems, if a problem is found, the computer turns on the “CHECK ENGINE” light to warn the driver, and sets a Diagnostic Trouble Code (DTC) to identify where the problem occurred. A special diagnostic tool, such as the OBD2 Scan Tool, is required to retrieve these codes, which consumers and professionals use as a starting point for repairs.

You Can Do It!

EASY TO USE - EASY TO VIEW - EASY TO DEFINE

2 OBD2

Easy T o Use ....

■ Connect the Scan Tool to the vehi-

cle’s test connector.

■ Turn the ignition key "On.”

■ Press the LINK button.

Easy T o View ....

■ The Scan Tool retrieves stored codes,

Freeze Frame data and I/M Readiness status.

■ Codes, I/M Readiness status and

Freeze Frame data are displayed on the Scan Tool’s display screen. System status is indicated by LED indicators.

Easy T o Define ....

■ Read code definitions from the Scan

Tool’s display.

■ View Freeze Frame data.

■ View Live Data.

Safety Precautions

SAFETY FIRST!

OBD2 3

SAFETY FIRST!

This manual describes common test procedures used by experienced service technicians. Many test procedures require precautions to avoid accidents that can result in personal injury, and/or damage to your vehicle or test equipment. Always read your vehicle's service manual and follow its safety precautions before and during any test or service procedure. ALWAYS observe the following general safety precautions:

When an engine is running, it produces carbon monoxide, a toxic and poisonous gas.To pre vent serious injury or death from carbon monoxide poisoning, operate the vehicle ONLY in a well-ventilated area.

To protect your eyes from propelled objects as well as hot or caustic liquids, always wear approved safety eye protection.

When an engine is running, many parts (such as the coolant fan, pulleys, fan belt etc.) turn at high speed. To avoid serious injury, always be aware of moving parts. Keep a safe distance from these parts as well as other potentially moving objects.

Engine parts become very hot when the engine is running. To prevent severe burns, avoid contact with hot engine parts.

Before starting an engine for testing or trouble-shooting, make sure the parking brake is engaged. Put the transmission in park (for automatic transmission) or neutral (for manual transmission). Block the drive wheels with suitable blocks.

Connecting or disconnecting test equipment when the ignition is ON can damage test equipment and the vehicle's electronic components. Turn the ignition OFF before connecting the Scan Tool to or disconnecting the Scan Tool from the vehicle’s Data Link Connector (DLC).

To avoid personal injury, instrument damage and/or

damage to your vehicle; do not use the OBD2 Scan Tool

before reading this manual.

Safety Precautions

SAFETY FIRST!

4 OBD2

To prevent damage to the on-board computer when taking vehicle electrical measurements, always use a digital multimeter with at least 10 megOhms of impedance.

Fuel and battery vapors are highly flammable. To prevent an explosion, keep all sparks, heated items and open flames away from the battery and fuel / fuel vapors. DO NOT SMOKE NEAR THE VEHICLE DURING TESTING.

Don't wear loose clothing or jewelry when working on an engine. Loose clothing can become caught in the fan, pulleys, belts, etc.Jewelry is highly conductive, and can cause a severe burn if it makes contact between a power source and ground.

About the Scan Tool

VEHICLES COVERED

OBD2 5

VEHICLES COVERED

The OBD2 Scan Tool is designed to work on all OBD 2 compliant vehicles. All 1996 and newer vehicles (cars and light trucks) sold in the United States are OBD 2 compliant.

Federal law requires that all 1996 and newer cars and light trucks sold in the United States must be OBD 2 compliant; this includes all Domestic, Asian and European vehicles.

Some 1994 and 1995 vehicles are OBD 2 compliant. To find out if a 1994 or 1995 vehicle is OBD 2 compliant, check the following:

1. The Vehicle Emissions Control Information (VECI) Label. This

label is located under the hood or by the radiator of most vehicles.If the vehicle is OBD 2 compliant, the label will state “OBD II Certified.”

2. Government Regulations require that

all OBD 2 compliant vehicles must have a “common” sixteen-pin Data Link Connector (DLC).

Some 1994 and 1995 vehicles have 16-pin connectors but are not OBD 2 compliant. Only those vehicles with a Vehicle Emissions Control Label stating “OBD II Certified” are OBD 2 compliant.

Data Link Connector (DLC) Location

The 16-pin DLC is usually located under the instrument panel (dash), within 12 inches (300 mm) of center of the panel, on the driver’s side of most vehicles.It should be easily accessible and visible from a kneeling position outside the vehicle with the door open.

VEHICLE EMISSION CONTROL INFORMATION

ENGINE FAMILY EFN2.6YBT2BA

VEHICLE

MANUFACTURER

REFER TO SERVICE MANUAL FOR ADDITIONAL INFORMATION TUNE-UP CONDITIONS: NORMAL OPERATING ENGINE TEMPERATURE, ACCESSORIES OFF, COOLING FAN OFF, TRANSMISSION IN NEUTRAL

EXHAUST EMISSIONS STANDARDS STANDARD CATEGORY CERTIFICATION

IN-USE

SPARK PLUG

TYPE NGK BPRE-11

GAP: 1.1MM

DISPLACEMENT 2.6L

THIS VEHICLE CONFORMS TO U.S. EPA AND STATE OF CALIFORNIA REGULATIONS APPLICABLE TO 1999 MODEL YEAR NEW TLEV PASSENGER CARS.

TLEV TLEV INTERMEDIATE

CATALYST

OBD II

CERTIFIED

OBD II

CERTIFIED

12345678 910111213141516

LEFT CORNER

OF DASH

NEAR

CENTER

OF DASH

BEHIND

ASHTRAY

About the Scan Tool

VEHICLES COVERED / BATTERY REPLACEMENT

6 OBD2

On some Asian and European vehicles the DLC is located behind the “ashtray”(the ashtray must be removed to access it) or on the far left corner of the dash. If the DLC cannot be located, consult the vehicle’s service manual for the location.

BATTERY REPLACEMENT

Replace batteries when the battery symbol is visible on display and/or the 3 LEDS are all lit and no other data is visible on screen.

1. Locate the battery cover on the back of the Scan Tool.

2. Slide the battery cover off (use your fingers).

3. Replace batteries with three AA-size batteries (for longer life, use

Alkaline-type batteries).

4. Reinstall the battery cover on the back of the Scan Tool.

Language Selection After Battery Installation

The first time the Scan Tool is turned on, you must select the desired display language (English, French or Spanish).Select the display language as follows:

1. Press and hold the POWER/LINK

button for approximately 3 seconds to turn the Scan Tool “ON.”

■ The Select Language screen displa ys.

2. Use the UP and DOWN but-

tons, as necessary, to highlight the desired display language.

When the desired display language is selected, press the ENTER/LD button to confirm your selection.

■ The display shows the "To Link" mes-

sage in the selected display language. Press the POWER/LINK

button to turn the Scan Tool "off."

■ After the initial language selection is performed, it as well as

other settings can be changed as desired. See ADJUSTMENTS AND SETTINGS on page 7 for further instructions.

About the Scan Tool

ADJUSTMENTS AND SETTINGS

OBD2 7

ADJUSTMENTS AND SETTINGS

The OBD2 Scan Tool lets you make several adjustments and settings to configure the Scan Tool for your particular needs. The following adjustments and settings are available:

■ DTC Library - Library of OBD2 DTC definitions.

■ Adjust Brightness: Adjusts the brightness of the display screen.

■ Display Backlight: Turns the display backlight on and off.

■ Select Language: Sets the display language for the Scan Tool to

English, French or Spanish.

■ Unit of Measure: Sets the Unit of Measure for the Scan Tool’s dis-

play to USA or metric.

Adjustments and settings can be made only when the Scan Tool is NOT connected to a vehicle.

To enter the MENU Mode:

1. With the Scan Tool “off”, press and hold

the UP button, then press and release the POWER/LINK button.

■ The adjustments and setting MENU

displays.

2. Release the UP button.

DO NOT release the UP button until the adjustments and settings MENU is visible on the display.

3. Make adjustments and settings as described in the following para-

graphs.

Searching for a DTC Definition Using the DTC Library

1. Use the UP and DOWN but-

tons, as necessary, to highlight DTC Library in the MENU, then press the ENTER/LD button.

■ The Enter DTC screen displays. The

screen shows the code “P0000”, with the “P” flashing.

2. Use the UP and DOWN buttons,

as necessary, to scroll to the desired DTC type (P=Powertrain, U=Network, B=Body, C=Chassis), then press the

DTC SCROLL button.

About the Scan Tool

ADJUSTMENTS AND SETTINGS

8 OBD2

■ The selected character displays “solid”, and the next character

begins flashing.

3. Select the remaining characters in the DTC in the same way, press-

ing the DTC SCROLL button to confirm each character. When you have selected all the DTC characters, press the ENTER/LD

button to view the DTC definiition.

■ If you entered a “Generic” DTC

(DTCs that start with “P0”, “P2” and some “P3”):

- The selected DTC and DTC definition (if available) show on the Scan Tool’s display.

■ If you entered a “Manufacturer-

Specific” DTC (DTCs that start with “P1” and some “P3”):

- The “Select Manufacturer” screen displays.

- Use the UP and DOWN buttons, as necessary, to highlight the appropriate manufacturer, then press the ENTER/LD

button to display the correct

DTC for your vehicle.

If a definition for the DTC you entered is not available, an advisory message shows on the Scan Tool’s display.

4. If you wish to view definitions for additional DTCs, press the ENTER/LD button to return to the Enter DTC screen, and

repeat steps 2 and 3.

5. When all desired DTCs have been viewed, press the ERASE button to exit the DTC Library.

Adjusting Display Brightness

1. Use the UP and DOWN but- tons, as necessary, to highlight Adjust Brightness in the MENU, then press the ENTER/LD button.

■ The Adjust Brightness screen dis-

plays.

About the Scan Tool

ADJUSTMENTS AND SETTINGS

OBD2 9

■ The Brightness field shows the cur-

rent brightness setting, from 0 to 43.

2. Press the UP button to decrease the brightness of the display (make the display darker).

3. Press the DOWN button to increase the brightness of the display (make the display lighter).

4. When the desired brightness is obtained, press the ENTER/LD

button to save your changes and return to the MENU.

Using the Backlight

1. Use the UP and DOWN but- tons, as necessary, to highlight Display Backlight in the MENU, then press the ENTER/LD button.

■ The Displa y Backlight screen displa ys.

2. Press the UP or DOWN button, as necessary, to select the desired backlight mode, either ON or OFF.

3. When the desired backlight mode is selected, press the ENTER/LD button to save your changes.

■ The displa y returns to the MENU, and

the backlight turns “on” or “off” as selected.

Selecting the Display Language

1. Use the UP and DOWN but- tons, as necessary, to highlight Select Language in the MENU, then press the ENTER/LD button.

■ The Select Language screen dis-

plays.

■ The currently selected display

Language is highlighted.

2. Press the UP or DOWN button,

as necessary, to highlight the desired display language.

3. When the desired display language is highlighted, press the ENTER/LD

button to save your changes and return to the MENU.

About the Scan Tool

ADJUSTMENTS AND SETTINGS

10 OBD2

Setting the Unit of Measurement

1. Use the UP and DOWN but-

tons, as necessary, to highlight Unit of Measurement in the MENU, then press the ENTER/LD button.

2. Press the UP or DOWN button,

as necessary, to highlight the desired

Unit of Measurement.

3. When the desired Unit of Measurement

value is selected, press the ENTER/LD

button to save your changes.

Exiting the MENU Mode

1. Use the UP and DOWN buttons, as necessary, to highlight Menu Exit in the MENU, then press the ENTER/LD button.

■ The display returns to the DTC screen (if data is currently stored

in the Scan Tool) or to the "To Link" message (if no data is currently stored in the Scan Tool).

OBD2 11

Scan T ool Controls

CONTROLS AND INDICATORS

See Figure 1 for the locations of items 1 through 11, below.

1. ERASE button - Erases Diagnostic Trouble Codes (DTCs),

and “Freeze Frame” data from your vehicle’s computer, and resets Monitor status.

2. DTC SCROLL button - Displays the DTC View screen and/or

scrolls the display to view DTCs when more than one DTC is present.

3. POWER/LINK button - When the Scan Tool IS NOT

connected to a vehicle, turns the Scan Tool “On” and “Off”. When the Scan Tool is connected to a vehicle, links the Scan Tool to the vehicle’ s PCM to retrieve diagnostic data from the computer’s memory.

To turn the Scan Tool "On", you must press and hold the

POWER/LINK button for approximately 3 seconds.

4. ENTER/LIVE DATA button - When in MENU mode, confirms

the selected option or value.When linked to a vehicle, places the Scan Tool in "Live Data" mode.

Figure 1. Controls and Indicators

7 6

1 2 5

9 3

12 OBD2

Scan T ool Controls

DISPLAY FUNCTIONS

5. DOWN button - When in MENU mode, scrolls DOWN through

the menu and submenu selection options.When LINKED to a vehicle, scrolls DOWN through the current display screen to display any additional data.

6. UP button - When in MENU mode, scrolls UP through the

menu and submenu selection options. When LINKED to a vehicle, scrolls UP through the current display screen to display any additional data.

7. GREEN LED - Indicates that all engine systems are r unning nor-

mally (all Monitors on the vehicle are active and perfor ming their diagnostic testing, and no DTCs are present).

8. YELLOW LED - Indicates there is a possible problem. A “Pending”

DTC is present and/or some of the vehicle’s emission monitors have not run their diagnostic testing.

9. RED LED - Indicates there is a problem in one or more of the vehi-

cle’s systems.The red LED is also used to show that DTC(s) are present. DTCs are shown on the Scan Tool’s display. In this case, the Multifunction Indicator (“Check Engine”) lamp on the vehicle’s instrument panel will light steady on.

10. Display - Displays settings Menu and submenus, test results,

Scan Tool functions and Monitor status information. See DISPLAY

FUNCTIONS, following, for more details.

11. CABLE - Connects the Scan Tool to the vehicle’s Data Link

Connector (DLC).

DISPLAY FUNCTIONS

See Figure 2 for the locations of items 1 through 16, following.

Figure 2. Display Functions

12 13

3 4 5 6

7 8

15 16

14 10

OBD2 13

Scan T ool Controls

DISPLAY FUNCTIONS

1. I/M MONITOR ST ATUS field - Identifies the I/M Monitor status area.

2. Monitor icons - Indicate which Monitors are supported by the vehi-

cle under test, and whether or not the associated Monitor has run its diagnostic testing (Monitor status).When a Monitor icon is solid, it indicates that the associated Monitor has completed its diagnostic testing.When a Monitor icon is flashing, it indicates that the vehicle supports the associated Monitor, but the Monitor has not yet run its diagnostic testing.

3. Vehicle icon - Indicates whether or not the Scan Tool is being properly powered through the vehicle’ s Data Link Connector (DLC). A visible icon indicates that the Scan Tool is being powered through the vehicle’s DLC connector.

4. Link icon - Indicates whether or not the Scan Tool is communicating (linked) with the vehicle’ s on-board computer .When visible, the Scan Tool is communicating with the computer. If the Link icon is not visible, the Scan Tool is not comm unicating with the computer.

5. Computer icon - When this icon is visible it indicates that the Scan Tool is linked to a personal computer. An optional “PC Link Kit” is available that makes it possible to upload retrieved data to a personal computer.

6. Scan Tool Internal Battery icon - When visible, indicates the Scan Tool batter ies are “low” and should be replaced. If the batteries are not replaced when the battery symbol is "on", all 3 LEDs will light up as a last resort indicator to warn you that the batteries need replacement. No data will be displayed on screen when all 3 LEDs are lit.

7. DTC Display Area- Displa ys the Diagnostic Trouble Code (DTC) number.Each fault is assigned a code number that is specific to that fault.

8. Test Data Display Area - Displays DTC definitions, Freeze Frame data, Live Data and other pertinent test information messages.

9. FREEZE FRAME icon - Indicates that there is Freeze Frame data from “Priority Code” (Code #1) stored in the vehicle’s computer memory.

10. HISTORY icon - Indicates the currently displayed DTC is a

“History” code.

11. PENDING icon - Indicates the currently displayed DTC is a

“Pending” code.

12. MIL icon - Indicates the status of the Malfunction Indicator Lamp

(MIL). The MIL icon is visible only when a DTC has commanded the MIL on the vehicle’s dashboard to light.

14 OBD2

Scan T ool Controls

DISPLAY FUNCTIONS

13. Code Number Sequence - The Scan Tool assigns a sequence

number to each DTC that is present in the computer’s memory, starting with “01.” This number indicates which code is currently displayed. Code number “01” is always the highest priority code, and the one for which “Freeze Frame” data has been stored.

If “01” is a “Pending” code, there may or may not be “Freeze Frame” data stored in memory.

14. Code Enumerator - Indicates the total number of codes retrieved

from the vehicle’s computer.

15. Generic DTC icon - When visible, indicates that the currently

displayed DTC is a “generic” or universal code.

16. Manufacturer Specific DTC icon - When visible, indicates that

the currently displayed DTC is a Manufacturer Specific Code.

OBD2 15

Onboard Diagnostics

DIAGNOSTIC TROUBLE CODES (DTCs)

Diagnostic Trouble Codes (DTCs) are meant to guide you to the proper service procedure in the vehicle’s service manual. DO NOT replace parts based only on DTCs without first consulting the vehicle’s service manual for proper testing procedures for that particular system, circuit or component.

DTCs are alphanumeric codes that are used to identify a problem that is present in any of the systems that are monitored by the on-board computer (PCM). Each trouble code has an assigned message that identifies the circuit, component or system area where the problem was found.

OBD 2 diagnostic trouble codes are made up of five characters:

■ The 1st character is a letter. It identifies the “main system” where

the fault occurred (Body, Chassis, Power train, or Network).

■ The 2nd character is a n umeric digit.It identifies the “type” of code

(Generic or Manufacturer-Specific).

Generic DTCs are codes that are used by all vehicle manufacturers. The standards for generic DTCs, as well as their definitions, are set by the Society of Automotive Engineers (SAE).

Manufacturer-Specific DTCs are codes that are controlled by the vehicle manufacturers. The Federal Government does not require vehicle manufacturers to go beyond the standardized generic DTCs in order to comply with the new OBD2 emissions standards.However, man ufacturers are free to expand beyond the standardized codes to make their systems easier to diagnose.

■ The 3rd character is a numeric digit. It identifies the specific sys-

tem or sub-system where the problem is located.

■ The 4th and 5th characters are numeric digits. They identify the

section of the system that is malfunctioning.

Diagnostic T rouble

Codes (DTCs) are

codes that identify a

specific problem area.

16 OBD2

Onboard Diagnostics

DIAGNOSTIC TROUBLE CODES (DTCs)

DTCs and MIL Status

When the vehicle’s on-board computer detects a failure in an emissions-related component or system, the computer’s internal diagnostic program assigns a diagnostic trouble code (DTC) that points to the system (and subsystem) where the fault was found.The diagnostic program saves the code in the computer’s memory. It records a “Freeze Frame” of conditions present when the fault was found, and lights the Malfunction Indicator Lamp (MIL). Some faults require detection for two trips in a row before the MIL is turned on.

The “Malfunction Indicator Lamp” (MIL) is the accepted term used to describe the lamp on the dashboard that lights to warn the driver that an emissions-related fault has been found. Some manufacturers may still call this lamp a “Check Engine” or “Service Engine Soon” light.

P0201 - Injector Circuit Malfunction, Cylinder 1

OBD 2 DTC EXAMPLE

Body

Chassis

Powertrain

Network

Generic

Manufacturer Specific

Generic

Includes both Generic and Manufacturer

Specific Codes

Identifies the system where the problem is located:

Fuel and Air Metering

Fuel and Air Metering (injector circuit malfunction only)

Ignition System or Misfire

Auxiliary Emission Control System

Vehicle Speed Control and Idle Control System

Computer Output Circuits

Transmission

Identifies what section of the system is malfunctioning

P 0 2 0 1

OBD2 17

Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET

The purpose of this form is to help you gather preliminary information on your vehicle before you retrieve codes.By having a complete account of your vehicle's current problem(s), you will be able to systematically pinpoint the problem(s) by comparing your answers to the fault codes you retrieve. You can also provide this information to your mechanic to assist in diagnosis and help avoid costly and unnecessary repairs. It is important for you to complete this f orm to help you and/or y our mechanic have a clear understanding of your vehicle's problems.

NAME: DATE: VIN*: YEAR: MAKE: MODEL: ENGINE SIZE: VEHICLE MILEAGE:

*VIN: Vehicle Identification Number, found at the base of the windshield on a metallic plate, or at the driver door latch area (consult your vehicle owner's manual for location).

TRANSMISSION:

❑

Automatic

❑ Manual

Please check all applicable items in each category.

DESCRIBE THE PROBLEM:

18 OBD2

Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET

WHEN DID YOU FIRST NOTICE THE PROBLEM:

❑ Just Started ❑ Star ted Last Week ❑ Star ted Last Month ❑ Other:

LIST ANY REPAIRS DONE IN THE PAST SIX MONTHS:

PROBLEMS STARTING

ENGINE QUITS OR STALLS

IDLING CONDITIONS

RUNNING CONDITIONS

❑ No symptoms ❑ Will not crank

❑ Cranks, but will not start ❑ Star ts, but takes a long time

❑ No symptoms ❑ Right after star ting ❑ When shifting into gear ❑ During steady-speed dr iving

❑ Right after vehicle comes to a stop ❑ While idling ❑ During acceleration ❑ When parking

❑ No symptoms ❑ Is too slow at all times ❑ Is too fast

❑ Is sometimes too fast or too slow ❑ Is rough or uneven ❑ Fluctuates up and down

❑ No symptoms ❑ Runs rough ❑ Lacks power ❑ Bucks and jerks ❑ Poor fuel economy ❑ Hesitates or stumbles on

accelerations

❑ Backfires ❑ Misfires or cuts out ❑ Engine knocks, pings or rattles ❑ Surges ❑ Dieseling or run-on

OBD2 19

Preparation for Testing

PRELIMINARY VEHICLE DIAGNOSIS WORKSHEET

AUTOMATIC TRANSMISSION PROBLEMS (if applicable)

PROBLEM OCCURS

❑ Morning ❑ Afternoon ❑ Anytime

ENGINE TEMPERATURE WHEN PROBLEM OCCURS

❑ Cold ❑ Warm ❑ Hot

DRIVING CONDITIONS WHEN PROBLEM OCCURS

DRIVING HABITS

GASOLINE USED

WEATHER CONDITIONS WHEN PROBLEM OCCURS

CHECK ENGINE LIGHT / DASH WARNING LIGHT

❑

Sometimes ON ❑ Always ON ❑ Never ON

PECULIAR SMELLS

STRANGE NOISES

❑ Shor t - less than 2 miles ❑ 2 - 10 miles ❑ Long - more than 10 miles ❑ Stop and go ❑ While turning ❑ While braking ❑ At gear engagement ❑ With A/C operating

❑ With headlights on ❑ During acceleration ❑ Mostly driving downhill ❑ Mostly driving uphill ❑ Mostly driving level ❑ Mostly driving cur vy roads ❑ Mostly driving rough roads

❑ Mostly city driving ❑ Highway ❑ Park vehicle inside ❑ Park vehicle outside

❑ Drive less than 10 miles per day ❑ Drive 10 to 50 miles per day ❑ Drive more than 50 miles per day

❑ 87 Octane ❑ 89 Octane

❑ 91 Octane ❑ More than 91 Octane

❑ 32 - 55° F (0 - 13° C) ❑ Below freezing (32° F / 0° C)

❑ Above 55° F (13° C)

❑ "Hot" ❑ Sulfur ("rotten egg") ❑ Burning r ubber

❑ Gasoline ❑ Burning oil ❑ Electrical

❑ Rattle ❑ Knock

❑ Squeak ❑ Other

❑ No symptoms ❑ Shifts too early or too late ❑ Changes gear incorrectly

❑ Vehicle does not move when in

gear

❑ Jerks or bucks

20 OBD2

Preparation for Testing

BEFORE YOU BEGIN

BEFORE Y OU BEGIN

The OBD2 Scan Tool aids in monitoring electronic- and emissions-related faults in your vehicle and retrieving fault codes related to malfunctions in these systems. Mechanical problems such as low oil level or damaged hoses, wiring or electrical connectors can cause poor engine performance and may also cause a fault code to set.Fix any known mechanical problems before perfor ming any test. See your vehicle’s service manual or a mechanic for more information.

Check the following areas before starting any test:

■ Check the engine oil, power steering fluid, transmission fluid (if

applicable), engine coolant and other fluids for proper le v els .Top off low fluid levels if needed.

■ Mak e sure the air filter is clean and in good condition.Make sure all

air filter ducts are properly connected. Check the air filter ducts for holes, rips or cracks.

■ Mak e sure all engine belts are in good condition.Check for cracked,

torn, brittle, loose or missing belts.

■ Make sure mechanical linkages to engine sensors (throttle,

gearshift position, transmission, etc.) are secure and properly connected. See your vehicle’s service manual for locations.

■ Check all rubber hoses (radiator) and steel hoses (vacuum/fuel) for

leaks, cracks, blockage or other damage. Make sure all hoses are routed and connected properly.

■ Make sure all spark plugs are clean and in good condition. Check

for damaged, loose, disconnected or missing spark plug wires.

■ Make sure the batter y terminals are clean and tight. Check for cor-

rosion or broken connections. Check for proper battery and charging system voltages.

■ Check all electrical wiring and harnesses for proper connection.

Make sure wire insulation is in good condition, and there are no bare wires.

■ Make sure the engine is mechanically sound. If needed, perform a

compression check, engine vacuum check, timing chec k (if applicable), etc.

OBD2 21

Preparation for Testing

VEHICLE SERVICE MANUALS

Always refer to the manufacturer’s service manual for your vehicle before performing any test or repair procedures.Contact your local car dealership, auto parts store or bookstore for availability of these manuals.The following companies publish valuable repair manuals:

■ Haynes Publications

861 Lawrence Drive Newbury Park, California 91320 Phone: 800-442-9637

■ Mitchell International

14145 Danielson Street Poway, California 92064 Phone: 888-724-6742

■ Motor Publications

5600 Crooks Road, Suite 200 Troy, Michigan 48098 Phone: 800-426-6867

FACTORY SOURCES

Ford, GM, Chrysler, Honda, Isuzu, Hyundai and Subaru Service Manuals

■ Helm Inc.

14310 Hamilton Avenue Highland Park, Michigan 48203 Phone: 800-782-4356

22 OBD2

Using the Scan Tool

CODE RETRIEVAL PROCEDURE

Never replace a par t based only on the DTC definition.

Each DTC has a set of testing procedures, instructions and flow charts that must be followed to confirm the location of the problem.This information is found in the vehicle's service manual. Always refer to the vehicle's service manual for detailed testing instructions.

Check your vehicle thoroughly before performing any test. See Before You Begin on page 20 for details.

ALWAYS observe safety precautions whenever working on a vehicle. See Safety Precautions on page 3 for more infor- mation.

1. Turn the ignition off.

2. Locate the vehicle's 16-pin Data Link

Connector (DLC). See page 5 for connector location.

Some DLCs have a plastic cover that must be removed bef ore connecting the Scan Tool cable connector.

If the Scan Tool is ON, tur n it

OFF by pressing the POWER/LINK button BEFORE connecting the Scan Tool to the DLC.

3. Connect the Scan Tool cable connector to the vehicle’s DLC. The cable connector is keyed and will only fit one way.

■ If y ou ha ve problems connecting the cable connector to the DLC,

rotate the connector 180° and try again.

■ If you still have problems, check the DLC on the vehicle and on

the Scan Tool. Refer to your vehicle’s ser vice manual to properly check the vehicle’s DLC.

4. When the Scan Tool’s cable connector is properly connected to the vehicle’s DLC , the unit automatically turns ON, and the display shows instructions for linking to the vehicle’s on-board computer.

Retrieving and using Diagnostic Trouble Codes (DTCs) for

troubleshooting vehicle operation is only one part of an

overall diagnostic strategy.

OBD2 23

Using the Scan Tool

CODE RETRIEVAL PROCEDURE

■ If the unit does not power on automatically when connected to

the vehicle’s DLC connector, it usually indicates there is no power present at the vehicle’s DLC connector. Check your fuse panel and replace any burned-out fuses.

■ If replacing the fuse(s) does not correct the prob lem, consult your

vehicle’s repair man ual to identify the proper computer (PCM) fuse/ circuit, and perform any necessary repairs before proceeding.

5. Turn the ignition on. DO NOT start the engine.

6. Press and release the Scan Tool’s POWER/LINK button.

■ The Scan Tool will automatically start

a check of the vehicle’s computer to determine which type of communication protocol it is using. When the Scan Tool identifies the computer’s communication protocol, a communication link is established. The protocol type used by the vehicle’s computer is shown on the display.

A PROTOCOL is a set of rules and procedures for regulating data transmission between computers, and between testing equipment and computers. As of this wr iting, five different types of protocols (ISO 9141, Keyword 2000, J1850 PWM, J1850 VPW and CAN) are in use by vehicle manufacturers.The Scan Tool automatically identifies the protocol type and establishes a communication link with the vehicle’s computer.

7. After approximately 10~60 seconds, the Scan Tool will retrieve and display any Diagnostic Trouble Codes, Monitor Status and Freeze

Frame Data retrieved from the vehicle’s computer memory.

■ If the Scan Tool fails to link to the vehi-

cle’s computer a “Linking Failed”message shows on the Scan Tool’s display.

- Verify the connection at the DLC: and verify the ignition is ON.

- Turn the ignition OFF, wait 5 seconds, then turn back ON to reset the computer.

- Ensure your vehicle is OBD2 compliant. See Vehicles Covered on page 5 for vehicle compliance verification information.

24 OBD2

Using the Scan Tool

CODE RETRIEVAL PROCEDURE

■ The Scan T ool will displa y a code only

if codes are present in the vehicle’s computer memory. If no codes are present, a “No DTC’s are presently stored in the vehicle’s computer” message is displayed.

■ The Scan Tool is capable of retrieving

and storing up to 32 codes in memory, for immediate or later viewing.

8. To read the display:

Refer to Display Functions on page 12 for a description of display elements.

■ A visible icon indicates that the Scan Tool is being powered

through the vehicle’s DLC connector.

■ A visible icon indicates that the Scan Tool is linked to (com-

municating with) the vehicle’s computer.

■ The I/M Monitor Status icons indicate the type and number of

Monitors the vehicle supports, and provides indications of the current status of the vehicle’s Monitors .A solid Monitor icon indicates the associated Monitor has run and completed its testing. A blinking Monitor icon indicates the associated Monitor has not run and completed its testing.

■ The upper right hand corner of the

display shows the number of the code currently being displayed, the total number of codes retrieved, the type of code (G = Generic; M = Enhanced or Manufacturer specific), and whether or not the displayed code commanded the MIL on. If the code being displayed is a PENDING code, the PENDING icon is shown.

■ The Diagnostic Trouble Code (DTC) and related code definition

are shown in the lower section of the display.

In the case of long code definitions, or when viewing Freeze Frame and Live Data, a small arrow is shown in the upper/lower right-hand corner of the Scan Tool display area to indicate the presence of additional information. Use the

and

buttons, as necessary, to

view the additional information.

9. Read and interpret Diagnostic Trouble Codes/system condition using the display and the green, yellow and red LEDs.

The green, yellow and red LEDs are used (with the display) as visual aids to make it easier to determine engine system conditions.

OBD2 25

Using the Scan Tool

CODE RETRIEVAL PROCEDURE

■ Green LED – Indicates that all

engine systems are “OK” and operating normally. All monitors supported by the vehicle have run and performed their diagnostic testing, and no trouble codes are present. A zero will show on the Scan Tool’s display, and all Monitor icons will be solid.

■ Yellow LED – Indicates one of the following conditions:

A. A PENDING CODE IS PRESENT – If

the yellow LED is illuminated, it may indicate a Pending code is present. Check the Scan Tool’s display for confirmation. A Pending code is confirmed by the presence of a numeric code and the word PENDING on the Scan Tool’s display.

B. MONITOR NO T R UN STATUS – If the

Scan Tool’s display shows a zero (indicating there are no DTC’s present in the vehicle’s computer memory), but the yellow LED is illuminated, it may be an indication that some of the Monitors supported by the vehicle have not yet run and completed their diagnostic testing. Check the Scan Tool’s display for confirmation. All Monitor icons that are blinking have not yet run and completed their diagnostic testing; all Monitor icons that are solid have run and completed their diagnostic testing.

■ Red LED – Indicates there is a prob-

lem with one or more of the vehicle’s systems.The red LED is also used to indicate that DTC(s) are present (displayed on the Scan Tool’s screen). In this case, the Multifunction Indicator (Check Engine) lamp on the vehicle’s instrument panel will be illuminated.

■ DTC’s that start with “P0”, “P2” and some “P3” are considered

Generic (Universal).All Generic DTC definitions are the same on all OBD2 equipped vehicles. The Scan Tool automatically displays the code definitions (if available) for Generic DTC’s.

26 OBD2

Using the Scan Tool

CODE RETRIEVAL PROCEDURE

■ DTC’s that start with “P1” and some

“P3” are Enhanced (Manufacturer specific) codes and their code definitions vary with each vehicle manufacturer. When an Enhanced (Manufacturer specific) DTC is retrieved, the LCD display shows a list of vehicle man ufacturers. Use the UP and DOWN buttons, as necessary, to highlight the appropriate manufacturer, then press the ENTER/LD button to display the correct code definition for your vehicle.

If the manufacturer for your vehicle is not listed, use the

UP and DOWN buttons, as necessary, to select Other manufacturer and press the ENTER/LD but-

ton for additional DTC information. If the Manufacturer Specific

definition for the currently displayed code is not av ailab le, an advisory message shows on the Scan Tool’s display.

10.If more than one DTC was retrieved,

and to view Freeze Frame Data, press and release the DTC SCROLL button, as necessary.

■ Each time the DTC SCROLL button is pressed and

released, the Scan Tool will scroll and display the next DTC in sequence until all DTCs in its memory have displayed.

■ Freeze Frame Data (if available) will display after DTC #1.

Whenever the Scroll function is used to view additional DTCs and Freeze Frame Data, the Scan Tool's communication link with the vehicle's computer disconnects.To reestablish communication, press the POWER/LINK button again.

■ In OBD2 systems, when an emis-

sions-related engine malfunction occurs that causes a DTC to set, a record or snapshot of engine conditions at the time that the malfunction occurred is also saved in the vehicle’s computer memory. The record saved is called Freeze Frame data. Saved engine conditions include, but are not limited to: engine speed, open or closed loop operation, fuel system commands, coolant temperature, calculated load value, fuel pressure, vehicle speed, air flow rate, and intake manifold pressure.

OBD2 27

Using the Scan Tool

ERASING DIAGNOSTIC TROUBLE CODES (DTCs)

If more than one malfunction is present that causes more than one DTC to be set, only the code with the highest priority will contain Freeze Frame data.The code designated “01” on the Scan Tool display is referred to as the PRIORITY code, and Freeze Frame data always refers to this code.The priority code is also the one that has commanded the MIL on.

Retrieved information can be uploaded to a Personal Computer (PC) with the use of an optional “PC Link Kit.” (see instructions included with PC-Link program for more information).

11.Determine engine system(s) condition by viewing the Scan Tool’s

display for any retrieved Diagnostic Trouble Codes, code definitions, Freeze Frame data and Live Data, interpreting the green, yellow and red LEDs.

■ If DTC’s were retrieved and you are going to perf orm the repairs

yourself, proceed by consulting the Vehicle’s Service Repair Manual for testing instructions, testing procedures, and flow charts related to retrieved code(s).

■ If you plan to take the vehicle to a professional to have it serv-

iced, complete the Preliminary Vehicle Diagnosis Worksheet on page 17 and take it together with the retrieved codes, freeze frame data and LED information to aid in the troubleshooting procedure.

■ To prolong batter y life, the Scan Tool automatically shuts “Off”

approximately three minutes after it is disconnected from the vehicle. The DTCs retrieved, captured Live Data Information, Monitor Status and Freeze Frame data (if any) will remain in the Scan Tool’s memory, and may be viewed at any time by turning the unit “On”. If the Scan Tool’s batteries are removed, or if the Scan Tool is re-linked to a vehicle to retrieve codes/data, any prior codes/data in its memory are automatically cleared.

ERASING DIAGNOSTIC TROUBLE CODES (DTCs)

When the Scan Tool’s ERASE function is used to erase DTCs from the vehicle's on-board computer, "Freeze Frame" data and manufacturer-specific enhanced data are also erased.

If you plan to take the vehicle to a Service Center for repair, DO NOT erase the codes from the vehicle's computer. If the codes are erased, valuable information that might help the technician troubleshoot the problem will also be erased.

Erase DTCs from the computer's memory as follows:

28 OBD2

When DTCs are erased from the vehicle's computer memory, the I/M Readiness Monitor Status program resets the status of all Monitors to a not run "flashing" condition. To set all of the Monitors to a DONE status, an OBD 2 Drive Cycle must be performed.Refer to your vehicle's service manual for information on how to perform an OBD 2 Drive Cycle for the vehicle under test.

The Scan Tool must be connected to the vehicle’s DLC to erase the codes from the computer’s memory. If you press the ERASE button when the Scan Tool is not connected to the vehicle’s DLC, the erase instruction screen displays.

1. If not connected already, connect the Scan Tool to the vehicle's DLC, and turn the ignition "On.” (If the Scan Tool is already connected and linked to the vehicle's computer, proceed directly to step 4. If not, continue to step 2.)

2. Turn the ignition on. DO NOT star t the engine. Press and release the POWER/LINK button to establish communication with the vehicle's computer.

3. Press and release the ERASE but- ton. A confir mation message shows on the display.

- If you are sure you want to proceed

press the ERASE button again to erase DTCs from the vehicle’s computer.

- If you do not want to continue with the erase process, press the

POWER/LINK button to exit the erase mode.

4. If you chose to erase DTCs, a progress

screen displays while the erase function is in progress.

■ If the erase was successful, a confir-

mation message shows on the display. Press the DTC SCROLL button to return to the DTC screen.

Using the Scan Tool

ERASING DIAGNOSTIC TROUBLE CODES (DTCs)

OBD2 29

Using the Scan Tool

I/M READINESS TESTING

■ If the erase was not successful, an

advisory message shows on the display.Verify that the Scan Tool is properly connected to the vehicle’s DLC and that the ignition is on, then repeat steps 2 and 3, above.

Erasing DTCs does not fix the problem(s) that caused the code(s) to be set.If proper repairs to correct the problem that caused the code(s) to be set are not made, the code(s) will appear again (and the check engine light will illuminate) as soon as the vehicle is driven long enough for its Monitors to complete their testing.

I/M READINESS TESTING

I/M is an Inspection and Maintenance program legislated by the Government to meet federal clean-air standards.

The program requires that a vehicle be taken periodically to an Emissions Station for an "Emissions Test" or "Smog Check,”where the emissions-related components and systems are inspected and tested for proper operation. Emissions Tests are generally performed once a year, or once every two years.

On OBD 2 systems, the I/M program is enhanced by requiring vehicles to meet stricter test standards. One of the tests instituted by the Federal Government is called I/M 240. On I/M 240, the vehicle under test is driven under different speeds and load conditions on a dynamometer for 240 seconds, while the vehicle's emissions are measured.

Emissions tests vary depending on the geographic or regional area in which the vehicle is registered.If the vehicle is registered in a highly urbanized area, the I/M 240 is probably the type of test required.If the vehicle is registered in a rural area, the stricter “dynamometer type” test may not be required.

I/M Readiness Monitors

I/M Readiness shows whether the various emissions-related systems on the vehicle are operating properly and are ready for Inspection and Maintenance testing.

State and Federal Gov ernments enacted Regulations, Procedures and Emission Standards to ensure that all emissions-related components and systems are continuously or periodically monitored, tested and diagnosed whenever the vehicle is in operation. It also requires vehicle manufacturers to automatically detect and report any problems or faults that may increase the v ehicle's emissions to an unacceptable lev el.

The vehicle's emissions control system consists of several components or sub-systems (Oxygen Sensor, Catalytic Conv erter, EGR, Fuel System, etc.) that aid in reducing vehicle emissions.

30 OBD2

To have an efficient Vehicle Emission Control System, all the emissions-related components and systems must work correctly whenever the vehicle is in operation.

To comply with State and Federal Government regulations, vehicle manufacturers designed a series of special computer programs called "Monitors" that are programmed into the vehicle's computer. Each of these Monitors is specifically designed to run tests and diagnostics on a specific emissions-related component or system (Oxygen Sensor, Catalytic Converter, EGR Valve, Fuel System, etc.) to ensure their proper operation. Currently, there are a maximum of eleven Monitors available for use.

Each Monitor has a specific function to test and diagnose only its designated emissions-related component or system. The names of the Monitors (Oxygen Sensor Monitor, Catalyst Monitor, EGR Monitor, Misfire Monitor, etc.) describe which component or system each Monitor is designed to test and diagnose.

Emissions Inspection and Maintenance (I/M) Readiness

Monitor Status Inf

ormation

I/M Readiness Monitor Status shows which of the vehicle's Monitors have run and completed their diagnosis and testing, and which ones have not yet run and completed testing and diagnosis of their designated sections of the vehicle's emissions system.

■ If a Monitor was able to meet all the conditions required to enable it

to perform the self-diagnosis and testing of its assigned engine system, it means the monitor "HAS RUN.”

■ If a Monitor has not yet met all the conditions required for it to per-

form the self-diagnosis and testing of its assigned engine system; it means the Monitor "HAS NOT RUN.”

The Monitor Run/Not Run status does not show whether or not a problem exists in a system. Monitor status only indicates whether a particular Monitor has or has not run and performed the self-diagnosis and testing of its associated system.

Performing I/M Readiness Quick Check

When a vehicle first comes from the factory, all Monitors indicate a “HAVE RUN” status. This indicates that all Monitors have run and completed their diagnostic testing.The “HAVE RUN” status remains in the computer's memory, unless the Diagnostic Trouble Codes are erased or the vehicle's computer memory is cleared.

Using the Scan Tool

I/M READINESS TESTING

OBD2 31

The Scan Tool allows you to retrieve Monitor/System Status Information to help you determine if the vehicle is ready for an Emissions Test (Smog Check). In addition to retrieving Diagnostic Trouble Codes, the Scan Tool also retr ieves Monitor Run/Not Run status.This information is very important since different areas of the state/country have different emissions laws and regulations concerning Monitor Run/Not Run status.

Before an Emissions Test (Smog Check) can be performed, your vehicle must meet certain rules, requirements and procedures legislated by the Federal and state (country) governments where you live.

1. In most areas, one of the requirements that must be met before a vehicle is allowed to be Emissions Tested (Smog Checked) is that the vehicle does not have any Diagnostic Trouble Codes present (with the exception of PENDING Diagnostic Trouble Codes).

2. In addition to the requirement that no Diagnostic Trouble Codes be present, some areas also require that all the Monitors that a particular vehicle supports indicate a "Has Run" status condition before an Emissions Check may be perfor med.

3. Other areas may only require that some (but not all) Monitors indicate a "Has Run" status before an Emissions Test (Smog Check) may be performed.

Monitors with a "Has Run" status indicate that all the required conditions they needed to perform diagnosis and testing of their assigned engine area (system) have been met, and all diagnostic testing has completed successfully.

Monitors with a "Has Not Run" status have not yet met the conditions they need to perform diagnosis and testing of their assigned engine area (system), and have not been able to perform diagnostic testing on that system.

The green, yellow and red LEDs provide a quic k wa y to help y ou determine if a vehicle is ready for an Emissions Test (Smog Check). Follow the instructions below to perform the Quick Check.

Perform the Code Retrieval Procedure as described on page 22, then interpret the LED indications as follows:

Interpreting I/M Readiness Test Results

1. GREEN LED - Indicates that all engine

systems are "OK" and operating normally (all Monitors supported by the vehicle have run and performed their self-diagnostic testing). The vehicle is ready for an Emissions Test (Smog Check), and there is a good possibility that it can be certified.

Using the Scan Tool

I/M READINESS TESTING

32 OBD2

2. YELLOW LED - Determine from the Code Retrieval Procedure (page 22) which of the two possible conditions is causing the yellow LED to light.

■ If a "PENDING" Diagnostic Trouble

Code is causing the yellow LED to light, it is possible that the vehicle will be allowed to be tested for emissions and certified. Currently, most areas (states / countries) will allow an Emissions Test (Smog Check) to be performed if the only code in the vehicle's computer is a "PENDING" Diagnostic Trouble Code.

■ If the illumination of the Yellow LED is

being caused by monitors that “have not run” their diagnostic testing, then the issue of the vehicle being ready for an Emissions Test (Smog Check) depends on the emissions regulations and laws of your local area.

- Some areas require that all Monitors indicate a "Has Run" status before they allow an Emissions Test (Smog Check) to be performed. Other areas only require that some, but not all, Monitors have run their self-diagnostic testing before an Emissions Test (Smog Check) may be performed.

- From the code retrieval procedure, determine the status of each Monitor (a solid Monitor icon shows Monitor "Has Run" status, a flashing Monitor icon indicates "Has Not Run" status). Take this information to an emissions professional to determine (based on your test results) if your vehicle is ready for an Emissions Test (Smog Check).

3. RED LED - Indicates there is a problem with one or more of the vehicle's systems. A vehicle displaying a red LED is definitely not ready for an Emissions Test (Smog Check).The red LED is also an indication that there are Diagnostic Trouble Code(s) present (displayed on the Scan Tool's screen). The Multifunction Indicator (Check Engine) Lamp on the vehicle's instrument panel will light steady. The problem that is causing the red LED to light must be repaired before an Emissions Test (Smog Check) can be performed. It is also suggested that the vehicle be inspected/repaired before driving the vehicle further.

If the Red LED was obtained, there is a definite problem present in the system(s). In these cases, you have the following options.

Using the Scan Tool

I/M READINESS TESTING

OBD2 33

■ Repair the vehicle yourself. If you are going to perform the

repairs yourself, proceed by reading the vehicle service manual and following all its procedures and recommendations.

■ Take the vehicle to a professional to have it serviced.The prob-

lem(s) causing the red LED to light must be repaired before the vehicle is ready for an Emissions Test (Smog Check).

Using the I/M Readiness Monitor Status to Confirm a Repair

The I/M Readiness Monitor Status function can be used (after repair of a fault has been performed) to confirm that the repair has been performed correctly, and/or to check for Monitor Run Status. Use the following procedure to determine I/M Readiness Monitor Status:

1. Using retrieved Diagnostic Trouble Codes (DTCs) and code definitions as a guide, and following manufacturer's repair procedures, repair the fault or faults as instructed.

2. After the fault or faults have been repaired, connect the Scan Tool to the vehicle's DLC and erase the code or codes from the vehicle's computer memory.

■ See page 27 f or procedures to erase DTCs from the v ehicle's on-

board computer.

■ Write the codes down on a piece of paper for reference before

erasing.

3. After the erase procedure is performed, most of the Monitor icons on the Scan Tool’s display will be flashing.Leave the Scan Tool connected to the vehicle, and perform a Trip Drive Cycle for each "flashing" Monitor:

Misfire, Fuel and Comprehensive Component Monitors run continuously and their icons will always be on solid, even after the erase function is performed.

■ Each DTC is associated with a specific Monitor.Consult the v ehi-

cle's service manual to identify the Monitor (or Monitors) associated with the faults that were repaired.Follow the manufacturer's procedures to perform a Trip Drive Cycle for the appropriate Monitors.

■ While observing the Monitor icons on the Scan Tool’s display,

perform a Tr ip Dr ive Cycle for the appropriate Monitor or Monitors.

If the vehicle needs to be driven in order to perform a Trip Drive Cycle, ALWAYS have a second person help you. One person should drive the vehicle while the other person observes the Monitor icons on the Scan Tool for Monitor RUN status. Trying to drive and observe the Scan Tool at the same time is dangerous, and could cause a serious traffic accident.

Using the Scan Tool

I/M READINESS TESTING

34 OBD2

Using the Scan Tool

I/M READINESS TESTING

4. When a Monitor's Trip Drive Cycle is performed properly, the

Monitor icon on the Scan Tool’s display changes from "flashing" to "solid,” indicating that the Monitor has run and finished its diagnostic testing.

■ If, after the Monitor has run, the MIL on the vehicle's dash is not

lit, and no stored or pending codes associated with that particular Monitor are present in the vehicle's computer, the repair was successful.

■ If, after the Monitor has run, the MIL on the vehicle's dash lights

and/or a DTC associated with that Monitor is present in the vehicle's computer, the repair was unsuccessful. Refer to the vehicle's service manual and recheck repair procedures.

OBD2 35

The OBD2 Scan Tool is a special diagnostic tool that communicates with the vehicle's computer.The Scan Tool lets you view and/or "capture" (record) "real-time" Live Data. This information includes values (volts, rpm, temperature, speed etc.) and system status information (open loop, closed loop, fuel system status , etc.) gener ated b y the various vehicle sensors, switches and actuators.

In effect the Scan Tool lets you view, in "real time", the same signal values generated by the sensors, actuators, switches and/or vehicle system status information used by the vehicle's computer when calculating and conducting system adjustments and corrections.

The real time (Live Data) vehicle operating information (values/status) that the computer supplies to the Scan Tool for each sensor, actuator, switch, etc. is called Parameter Identification (PID) Data.

Each PID (sensor, actuator switch, status, etc.) has a set of operating characteristics and features (parameters) that serve to identify it.The Scan Tool displays this information for each sensor, actuator, switch or status that is supported by the vehicle under test.

WARNING: If the vehicle must be driven in order to perform a troubleshooting procedure, ALWAYS have a second person help you. One person should drive the vehicle while the other person observes the Scan Tool data. Trying to drive and operate the Scan Tool at the same time is dangerous, and could cause a serious traffic accident.

VIEWING LIVE DATA

1. Follow steps 1 through 7 of the Code Retriev al Procedure (page 22)

to place the Scan Tool in "Code Retr ieval" mode.

2. Press and release the ENTER/LD button to place the Scan Tool in "Live Data" mode.

3. Real-time Live Data (PID) information supported by the vehicle under test displays.

Remember, what you are viewing is "real-time" Live Data. The values (volts, rpm, temperature, vehicle speed, system status etc) for the various PIDS displayed may change as the vehicle's operating conditions change.

4. A vehicle usually supports several PIDs, however, only a limited amount of PID data can be displayed on the screen at one time.If additional PID data is available, a small arrow will be shown on the display. Use the the UP and DOWN buttons, as necessary, to scroll up or down to view all available PID data.

Live Data Mode

VIEWING LIVE DATA

Live Data Mode

CUSTOMIZING LIVE DATA (PIDs)

36 OBD2

■ If communication with the vehicle is

lost while viewing Live Data, a Communication Lost" message shows on the Scan Tool's display.

5. If you experience vehicle prob lems, vie w and/or compare the Live Data (PID) information displayed on the Scan Tool to specifications in the vehicle's repair manual.

If desired, you can "customize" the Live Data display to show only those PIDs you are interested in viewing. See Customizing Live Data (PIDs) below for details. You may also choose to "capture" (record) Live Data for later viewing. See Recording Live Data on page 37 for details.

6. You can toggle back and forth between the DTC screen (to view DTCs) and Live Data screen (to view PIDs) by alternately pressing

and releasing the DTC SCROLL and the ENTER/LD buttons once (the unit will stay linked to the vehicle while toggling

between modes).If the DTC SCROLL button is pressed twice, then the screen will scroll to the next DTC and the tool will be taken out of link.

When toggling from the Live Data to the DTC screen a “one moment please...” message will temporarily display, followed by the DTC screen.

CUSTOMIZING LIVE DATA (PIDs)

This feature lets you customize the Scan Tool display to show only those PIDs that are of interest at the current time.You can customize the Live Data display by placing the Scan Tool in "Custom Live Data" mode and selecting only the PIDs that you wish to display. To customize the Live Data display, proceed as follows:

1. With the Scan Tool in "Live Data" mode (see Viewing Live Data on page 35 for details), press and hold the ENTER/LD

button until the "Mode Selection

Menu" appears.

2. Use the the UP and DOWN but- tons, as necessary, to highlight “Live Data Menu”, then press the ENTER/LD

button.

■ The "Live Data Menu" displays.

3. Use the UP and DOWN but- tons, as necessary, to highlight “Custom Live Data”, then press the ENTER/LD

button.

Live Data Mode

RECORDING (CAPTURING) LIVE DATA

OBD2 37

■ The "Custom Live Data" menu displays, with the first PID in the

menu highlighted.

4. Use the UP and DOWN buttons to scroll through the available PIDs. When the PID you wish to display is

highlighted, press the ENTER/LD button to select it (a "checkmark" will show in the checkbox to the right of the PID to confirm your selection). Repeat the procedure until only the PIDs you want to display have all been selected.

■ To deselect a currently selected PID, highlight the PID, then

press the ENTER/LD button.The checkmark will be removed from the checkbox.

5. When you are finished making your selection(s), scroll to the end of the PID list and highlight the word DONE, then press the ENTER/LD button.

■ The Scan T ool is no w in "Custom Live Data" mode .Only the PIDs

you selected are shown on the Scan Tools display.

■ To toggle between the "Custom Live Data" display and the full

Live Data display, momentarily press the ENTER/LD button.

6. To exit the "Custom Live Data" mode, press and hold the ENTER/LD button until the “Mode Selection Menu” displays.

RECORDING (CAPTURING) LIVE DATA

You can record and save several frames of Live Data information for each PID supported by the vehicle in the Scan Tool's memory. Recorded Live Data can serve as valuable information to help you in the troubleshooting of vehicle problems.

There are two ways that the Scan Tool can "record" Live Data:

■ Record by DTC Trigger

■ Record by Manual Trigger

If the POWER/LINK button is pressed at any time while in Live Data mode, any stored (recorded) Live Data will be cleared (erased) from the Code Reader’s memory.

Record by DTC Trigger

This function

automatically

records (captures) Live Data information when a DTC sets and saves it in the Scan Tool’s memory.The recorded (captured) data can be a valuable troubleshooting aid, particularly if you are experiencing a fault that is causing a DTC to set.

Live Data Mode

RECORDING (CAPTURING) LIVE DATA

38 OBD2

1. With the Scan Tool in "Live Data" mode

(see Viewing Live Data on page 35 for details), press and hold the ENTER/LD

button until the "Mode Selection

Menu" appears.

2. Use the UP and DOWN but-

tons, as necessary, to highlight “Live Data Menu”, then press the ENTER/LD

button.

■ The "Live Data Menu" displays.

3. Use the UP and DOWN but-

tons, as necessary, to highlight “Record Live Data”, then press the ENTER/LD

button.

■ The "Record Live Data Menu" dis-

plays.

4. Use the UP and DOWN but-

tons, as necessary, to highlight Record by DTC trigger, then press the

ENTER/LD button.

5. When the "Record by DTC Trigger" screen displays, select the

desired trigger point as follows:

The Scan Tool is capable of recording approximately 20 frames of Live Data. Record by DTC trigger lets you select the point in time at which you wish the Scan Tool to begin recording Live Data. You can set the trigger point to record the 20 frames of data before an event (when the DTC sets), after the event, or in the middle (10 frames before and 10 frames after the event.

■ Beginning - records approximately

20 frames of Live Data after the DTC sets.

■ Middle - records approximately 10

frames of Live Data before and 10 frames after the DTC sets.

■ End- records approximately 20 frames

of Live Data before the DTC sets.

6. Use the UP and DOWN but-

tons, as necessary , to select the desired trigger point, then press the ENTER/LD

button.

Live Data Mode

RECORDING (CAPTURING) LIVE DATA

OBD2 39

■ A "One moment please .. ." message shows on the displa y.When

the Scan Tool is ready to record Live Data, the "Record Live Data" screen displays.

7. Put the engine in the operating condition that causes the DTC to

set.

■ If necessary, drive the vehicle until you reach the vehicle speed

at which the problem occurs.

8. When the Scan Tool detects a fault that causes a DTC to set, it

automatically records and saves approximately 20 frames of Live Data information in its memory (according to your trigger selection) for each PID supported by the vehicle.

■ All three LEDs will blink for three sec-

onds to indicate that Live Data is being recorded, and a "One moment please..." message shows on the display.

■ When recording is complete , a confir-

mation screen displays, asking if you would like to view the recorded data.

Use the UP and DOWN buttons, as necessary, to select Yes or No, as desired, then press the

ENTER/LD button.

If Yes is selected, the Scan Tool enters "Playback" mode from which you can view a frame-by-frame playback of recorded Live Data (see Live Data Playback on page 42 for details). If No is selected, the display returns to the "Live Data View" mode.

9. You can exit the "Record Live Data Mode" at any time by pressing

and holding the ENTER/LD button until the "Mode Selection Menu" displays.

If desired, you can transfer the recorded Live Data information to a personal computer using the optional PC-LINK program (see instructions included with PC-Link for more information).

Record by Manual Trigger

This option lets you select the precise time at which the Live Data recording will occur.Record by Manual Trigger can be a very valuable diagnostic tool when troubleshooting intermittent problems that do not meet the requirements for a DTC to set. Even though a DTC is not present, the intermittent problems will sometimes manifest themselves briefly, for a few fractions of a second and/or only at certain vehicle speeds or vehicle operating conditions.

Live Data Mode

RECORDING (CAPTURING) LIVE DATA

40 OBD2

1. With the Scan Tool in "Live Data" mode

(see Viewing Live Data on page 35 for details), press and hold the ENTER/LD

button until the "Mode Selection

Menu" appears.

2. Use the UP and DOWN but-

tons, as necessary, to highlight “Live Data Menu”, then press the ENTER/LD

button.

■ The "Live Data Menu" displays.

3. Use the UP and DOWN but-

tons, as necessary, to highlight “Record Live Data”, then press the ENTER/LD

button.

■ The "Record Live Data Menu" dis-

plays.

4. Use the UP and DOWN buttons, as necessary, to highlight

“Record by manual trigger”, then press the ENTER/LD button.

5. When the "Record by Manual Trigger" screen displays, select the

desired trigger point as follows:

The Scan Tool is capable of recording approximately 20 frames of Live Data. Record by DTC trigger lets you select the point in time at which you wish the Scan Tool to begin recording Live Data. You can set the trigger point to record the 20 frames of data before an event (when the DTC was set), after the event, or in the middle (10 frames before and 10 frames after the event.

■ Beginning - records approximately

20 frames of Live Data after the ENTER/LD button was pressed.

■ Middle - records approximately 10

frames of Live Data before and 10 frames after the ENTER/LD but-

ton was pressed.

■ End - records approximately 20 frames of Live Data before the

ENTER/LD button was pressed.

6. Use the UP and DOWN buttons, as necessary, to select the

desired trigger point, then press the ENTER/LD button.

Live Data Mode

RECORDING (CAPTURING) LIVE DATA

OBD2 41

■ A "One moment please. . ." message

shows on the display.When the Scan Tool is ready to record Live Data, the "Record Live Data" screen displays.

7. Put the engine in the operating condition

where the problem manifests itself.

■ If necessary, drive the vehicle until

you reach the vehicle speed at which the problem occurs.

8. When the problem occurs, press and

release the ENTER/LD button.

■ All three LEDs will blink for three sec-

onds to indicate that Live Data is being recorded, and a "One moment please. . ." message shows on the display.

■ When recording is complete , a confir-

mation screen displays, asking if you would like to view the recorded data.

Use the UP and DOWN buttons, as necessary, to select Yes or No, as desired, then press the

ENTER/LD button.

9. You can exit the "Record Live Data Mode" at any time by pressing

and holding the ENTER/LD button until the "Mode Selection Menu" displays.

If desired, you can transfer the recorded Live Data information to a personal computer using the optional PC-LINK program (see instructions included with PC-Link for more information).

Important Information

1. When Live Data capture is initiated, the green, yello w and red LEDs

on the Scan Tool will flash three times to indicate that Live Data is being saved to the Scan Tool's memor y.

Live Data Mode

LIVE DATA PLAYBACK

42 OBD2

2. When you are LINKED to a vehicle and you are in the “Live Data

View mode”, you can toggle between “Live Data View” mode and “DTC view” mode by alternately pressing and releasing the DTC

SCROLL or the ENTER/LD buttons.The Scan Tool will stay linked to the vehicle’s computer during this process. However,

if the DTC SCROLL button is pressed twice the DTC screen will be advanced to the next DTC screen and the Scan Tool will be taken out of link.

LIVE DATA PLAYBACK

Once Live Data has been recorded, it is saved in the Scan T ool's memory. You can view recorded Live Data immediately after recording by selecting Yes from the Record Live Data confirmation screen (see Recording Live Data on page 37 for more inf ormation), or you can view it later using the "Playback" function.

1. With the Scan Tool not connected to a vehicle, press the

POWER/LINK button.

■ The "To Link" screen shows on the Scan Tool's display.

2. Press the ENTER/LD button to

place the Scan Tool in "Live Data Playback" mode.

■ The display shows the recorded Live

Data, beginning with the "trigger" frame.

When you select Yes from the Record Live Data confirmation screen, the Scan Tool enters the "Live Data Playback" mode, and the display shows the recorded Live Data, beginning with the "trigger" frame.

■ A vehicle usually suppor ts several PIDs, however, only a limited

amount of PID data can be displayed on the screen at one time. If additional PID data is available , a small arrow will be shown on

the display. Use the UP and DOWN buttons, as necessary, to scroll up or down to view all available PID data.

■ When viewing recorded Live Data, look for any irregularities in

any of the PID values/signal information (LTFT %, RPM, MAP, TEMP, etc.). If any PIDs are not within specification, or irregularities are detected, follow the procedures in the vehicle's service repair manual to perform additional troubleshooting and repair.

When recorded Live Data is played back, all available PIDs are shown, even if you have customized the Live Data selections.

If there is no Live Data currently stored in the Scan Tool's memory, an advisory message shows on the display. Press

the DTC SCROLL button to exit the "Live Data Playback" mode.

Live Data Mode

LIVE DATA PLAYBACK

OBD2 43

3. When you have viewed all PID information for the current frame of

Live Data, use the DOWN button to scroll to the end of the PID list.Highlight Ne xt Frame or Previous Fr ame, as desired, then press

the ENTER/LD button.

4. When you have finished viewing the recorded Live Data, exit the

“Live Data Playback”mode using the appropr iate procedure shown below:

■ If the Code Reader

is connected

to a vehicle, use the DO WN

button to scroll to the end of the PID list, highlight Exit Playback, then press the ENTER/LD button.

■ If the Code Reader

is not connected

to a vehicle, press the DTC

SCROLL button.

Additional T ests

O2 SENSOR TEST

44 OBD2

In addition to retrieving Diagnostic Trouble Code (DTC) and viewing Live Data, you can use the Scan Tool to perform additional diagnostic tests, and to view diagnostic and vehicle information stored in your vehicle's on-board computer.

Additional tests are accessed through the "Mode Selection Menu." To access the "Mode Selection Menu", place the Scan Tool in "Live Data" mode (see Viewing Live Data on page 35 for details), then press

and hold the ENTER/LD button until the "Mode Selection Menu" appears.

The following functions are available from the "Mode Selection Menu":

■ Live Data Menu - Displays the "Live Data Menu" from which you

can choose to record, customize and play back Live Data (see the Live Data Mode section beginning on page 35 for more information)

■ O2 Sensor Test - Retrieves and displays O2 sensor monitor test

results from your vehicle's on-board computer.

■ Non-Continuous Test - Retrieves and displays test results for

emission-related powertrain components and systems that are not continuously monitored.

■ System T est - Performs a leak test for the vehicle's EVAP system.

■ Vehicle Information - Retrieves the vehicle's VIN number, calibra-

tion ID(s) and other related information, and lets you view a listing of available modules for the vehicle.

O2 SENSOR TEST

OBD2 regulations require that applicable vehicles monitor and test operation of the oxygen (O2) sensors to identify problems that can affect fuel efficiency and vehicle emissions.These tests are performed automatically when engine operating conditions are within predefined limits. Results of these tests are stored in the on-board computer's memory.

The O2 Sensor Test function lets you retrieve and view O2 sensor monitor test results for the most recently completed tests from your vehicle's on-board computer.

Vehicles are equipped with multiple O2 sensors. O2 sensors are installed both upstream of (before) and downstream of (after) the exhaust system Catalytic Converters.The name of an O2 sensor identifies its location in the exhaust system.The name of each O2 sensor is made up of three parts:

O2S XX YY

-or-

O2S X Y

■ O2S -this is the basic designation for

all

O2 sensors.

Additional T ests

O2 SENSOR TEST

OBD2 45

■ X or XX - These characters identify the location of the O2 sensor in

relation to a cylinder bank.An O2 sensor for cylinder bank 1 is identified by the designation “1” or "B1"; a sensor for cylinder bank 2 is identified as “2” or "B2."

”Bank One” indicates the side of the engine where cylinder number one is located (V-type engines). Bank Two is opposite of Bank One.

■ Y orYY - These characters identity the location of the O2 sensor in rela-

tion to the exhaust system catalyst.An O2 sensor located upstream of the catalyst is identified by the designation”1”or "S1", a sensor located downstream of the Catalytic Converter is identified as “2”or "S2."

For example, O2S12 or O2SB1S2 is the designation for the downstream O2 sensor for cylinder bank 1.

The Scan Tool does not perform O2 sensor tests, but retrieves results from the most recently performed O2 sensor tests from the on-board computer's memory. You may retrieve O2 sensor test results for only one test of one sensor at any given time.

1. From the "Mode Selection Menu", use

the UP and DOWN buttons, as necessary, to highlight O2 Sensor Test,

then press the ENTER/LD button.

■ The "Select Sensor" screen displays.

The screen shows all O2 sensors applicable to the vehicle under test.

If O2 sensor tests are not supported by the vehicle under test, an advisory message shows on the Scan Tool's display. Press the ENTER/LD button to return to "Live Data" mode.

2. Use the UP and DOWN but-

tons, as necessary, to highlight the O2 sensor for which you wish to view test

results, then press the ENTER/LD button.

3. A "One moment please..." message displays while the request is

sent to the vehicle's on-board computer.

4. When test results have been retrieved, data for the selected sensor

test will show on the Scan Tool's display.

5. When you have finished viewing the retrieved test data, scroll to the

end of the display to select Exit, then press the ENTER/LD button to return to the "Select Test" screen.

Additional T ests

NON-CONTINUOUS TEST

46 OBD2

NON-CONTINUOUS TEST

The Non-Continuous T est function retrieves and displays test results for emission-related powertrain components and systems that are not continuously monitored. The tests available are determined by the vehicle manufacturer.

The Scan Tool does not perform non-continuous test, but retrieves results from the most recently performed tests from the on-board computer’s memory. You may retrieve non-continuous test results for only one test at any given time.

1. From the "Mode Selection Menu", use

the UP and DOWN buttons, as necessary, to highlight Non-Continuous

Test, then press the ENTER/LD button.

■ The “Select Test” screen displays.

The screen shows all tests applicable to the vehicle under test. Refer to the vehicle’s service repair manual f or information related to non-continuous tests.

If non-continuous tests are not supported by the vehicle under test, an advisory message shows on the Scan Tool's display. Press the ENTER/LD button to return to the Mode Selection menu.

2. Use the UP and DOWN but-

tons, as necessary, to highlight the desired test, then press the ENTER/LD

button.

3. A “One moment please. . .” message diplays while the request is

sent to the vehicle’s on-board computer.

4. When test results have been retriev ed, data f or the selected test will

show on the Scan Tool’s display. The display shows the following information:

■ Test ID number

■ Module ID number

■ Component ID number

■ Min or Max test limit

Only one test limit, either Min or Max, is shown for any given test.

■ T est Value and status

Additional T ests

SYSTEM TEST

OBD2 47

Status is calculated by the Scan Tool by comparing the

Test Value against the displayed test limit (either Min or Max). Status is shown as either Low, High or OK.

5. When you have finished viewing the retrieved test data, scroll to the

end of the display to select Exit, then press the ENTER/LD button to return to the “Select Test” screen.

SYSTEM TEST

The System Test function lets you initiate a leak test for the vehicle's EVAP system.

The Scan Tool does not perform the leak test, but signals to vehicle's on-board computer to initiate the test. The vehicle manufacturer determines the criteria and method for stopping the test once it has been started. BEFORE using the System Test function, refer to the vehicle's service repair manual to determine the procedures necessary to stop the test.

1. From the "Mode Selection Menu", use

the UP and DOWN buttons as necessary, to highlight System Test,

then press the ENTER/LD button.

■ The "System Test Menu" displays.

2. Use the UP and DOWN but-

tons, as necessary, to highlight EVAP Leak Test, then press the ENTER/LD

button.

3. A "One moment please..." message dis-

plays while the request is sent to the vehicle's on-board computer.

Some vehicle manufacturers do not allow Scan Tools or other external devices to control vehicle systems. If the EVAP Leak Test is not supported by the vehicle under test, an advisory message shows on the Scan Tool's display. Press the ENTER/LD button to return to the System Test menu.

4. When the EVAP leak test has been initi-

ated by the vehicle's on-board computer, a confirmation message shows on the Scan Tool's display. Press the

ENTER/LD button to return to "Live Data" mode.

Additional T ests

VEHICLE INFORMATION

48 OBD2

VEHICLE INFORMATION

The Vehicle Information function offers two options for retrieving ref- erence information for the vehicle under test;Vehicle IDand A v ailable

Modules.

Retrieving Vehicle ID Information

The Vehicle ID function is applicable to model year 2000 and newer OBD2-compliant vehicles.

The Scan Tool can retr ieve a list of information (provided by the vehicle manufacturer),

unique

to the vehicle under test, from the vehicle's

on-board computer.This information may include:

■ The vehicle's VIN number

■ The control module identification number

■ The vehicle's calibration ID(s). These IDs

uniquely

identify the soft-

ware version(s) for the vehicle's control module(s).

■ The Vehicle's Calibration Verification Number(s) (CVNs) required

by ODB2 regulations. CVNs are used to determine if emissionrelated calibrations for the vehicle under test have been changed. One or more CVNs may be returned by the vehicle's computer.

1. From the "Mode Selection Menu", use

the UP and DOWN buttons, as necessary, to highlight V ehicle Inf ormation,

then press the ENTER/LD button.

■ The "Vehicle Information Menu" dis-

plays.

If the Vehicle Information function is not supported by the vehicle under test, an advisory message shows on the Scan Tool's display. Press the ENTER/LD

button to return to the Mode

Selection menu.

2. Use the UP and DOWN but-

tons, as necessary, to highlight Vehicle ID, then press the ENTER/LD button.

3. A "One moment please..." message dis-

plays while the requested information is retrieved from the vehicle's computer.

The first time the Vehicle ID function is used, it may take several minutes to retrieve the information from the vehicle's computer

Additional T ests

VEHICLE INFORMATION

OBD2 49

4. When the retrieval process is complet-

ed, the vehicle ID information is shown on the Scan Tool's display. Use the UP

and DOWN buttons, as neces-

sary, to view the entire list.

5. When you have finished viewing the

retrieved vehicle ID information, press the ENTER/LD button to retur n to "Live Data" mode.

Viewing Available Modules

The Scan Tool can retr ieve a list of modules supported by the vehicle under test.

1. From the "Mode Selection Menu", use

the UP and DOWN buttons, as necessary, to highlight Vehicle Information, then press the ENTER/LD

button.

■ The "Vehicle Information Menu" dis-

plays.

If the Vehicle Information function is not supported by the vehicle under test, an advisory message shows on the Scan Tool's display. Press the ENTER/LD

button to return to "Live

Data" mode.

2. Use the UP and DOWN but-

tons, as necessary , to highlight A vailab le Modules, then press the ENTER/LD

button.

3. A "One moment please..." message dis-

plays while the requested information is retrieved from the vehicle's computer.

4. When the retrieval process is complet-

ed, a complete list of modules supported by the vehicle under test is shown on

the Scan Tool's display.Use the UP and DOWN buttons, as necessary,

to view the entire list.

5. When you have finished viewing the list of available modules, press

the ENTER/LD button to return to "Live Data" mode.

50 OBD2

Generic (Global) OBD2 PID List

The following is a list of Generic (Global) PIDs and their descriptions.

Tool Display Unit Value PID Description

ACC Pedal D % XXX.X Accelerator Pedal Position D ACC Pedal E % XXX.X Accelerator Pedal Position E ACC Pedal F % XXX.X Accelerator Pedal Position F Air Status - UPS, DNS, Commanded Secondar y Air

OFF Status Ambient *C / *F XXX Ambient Air Temperature Aux Input Status - On / Off Auxiliary Input Status BARO kPa / XXX / XX.X Barometric Pressure

inHg Calc LOAD % XXX.X Calculated LOAD Value CAT Temp 11 *C / *F XXXX.X Catalyst Temperature Bank 1-

Sensor 1

CAT Temp 12 *C / *F XXXX.X Catalyst Temperature Bank 1-

Sensor 2

CAT Temp 21 *C / *F XXXX.X Catalyst Temperature Bank 2-

Sensor 1

CAT Temp 22 *C / *F XXXX.X Catalyst Temperature Bank 2-

Sensor 2

Command % XXX.X Commanded EGR EGR

Command % XXX.X Commanded Evaporative Purge EVAP

Command TAC % XXX.X Commanded Throttle Actuator Dist DTC Clr km / XXXXX Distance since DTC Cleared

mile

Dist MIL ON km / XXXXX Distance Traveled while MIL ON

miles ECT *C / *F XXX / XXX Engine Coolant Temp ECU V olts V XX.XXX Control Module Voltage EGR Error % XXX.X EGR Error Eng RPM min XXXXX Engine RPM EQ Ratio - X.XXX Commanded Equivalence Ratio EQ Ratio 11 - X.XXX Bank 1 - Sensor 1 Equivalence

Ratio

EQ Ratio 12 - X.XXX Bank 1 - Sensor 2 Equivalence

Ratio

EQ Ratio 13 - X.XXX Bank 1 - Sensor 3 Equivalence

Ratio

OBD2 51

Generic (Global) OBD2 PID List

Tool Display Unit Value PID Description

EQ Ratio 14 - X.XXX Bank 1 - Sensor 4 Equivalence

Ratio

EQ Ratio 21 - X.XXX Bank 2 - Sensor 1 Equivalence

Ratio

EQ Ratio 22 - X.XXX Bank 2 - Sensor 2 Equivalence

Ratio

EQ Ratio 23 - X.XXX Bank 2 - Sensor 3 Equivalence

Ratio

EQ Ratio 24 - X.XXX Bank 2 - Sensor 4 Equivalence

Ratio

EVAP Press Pa / XXXX.XX / Evap System Vapor Pressure

in H2O XX.XXX

FP / Vac kPa / XXXX.XXX / Fuel Rail Pressure relative to

PSI XXX.X Vacuum Fuel Level % XXX.X Fuel Level Input Fuel Press kPa / XXX / XX.X Fuel Rail Pressure

PSI Fuel Press kPa / XXXXX / Fuel Rail Pressure

PSI XXXX.X Fuel Sys 1 - OL Fuel System 1 Status Fuel Sys 1 - CL Fuel System 1 Status Fuel Sys 1 - OL-Drive Fuel System 1 Status Fuel Sys 1 - OL-Fault Fuel System 1 Status Fuel Sys 1 - CL-Fault Fuel System 1 Status Fuel Sys 2 - OL Fuel System 2 Status Fuel Sys 2 - CL Fuel System 2 Status Fuel Sys 2 - OL-Drive Fuel System 2 Status Fuel Sys 2 - OL-Fault Fuel System 2 Status Fuel Sys 2 - CL-Fault Fuel System 2 Status IAT *C / *F XXX / XXX Intake Air Temperature LOAD V alue % XXX.X Absolute Load Value LTFT B1 % XXX.X Long Term Fuel Trim-Bank 1 LTFT B2 % XXX.X Long Term Fuel Trim-Bank 2 LTFT B3 % XXX.X Long Term Fuel Trim-Bank 3 LTFT B4 % XXX.X Long Term Fuel Trim-Bank 4 MAF g/s ; XXX.XX / Air Flow Rate from Mass Air

lb/min XXXX.X Flow Sensor

MAP kPa / XXX / XX.X Intake Manifold Absolute Pressure

PSI

52 OBD2

Generic (Global) OBD2 PID List

Tool Display Unit Value PID Description

MIL On Time hrs, min XXXX, XX Engine Run Time while MIL ON Monitor Status - ICONS on Monitor Status this Driving Cycle

Display O2S B1 S1 V X.XXX Bank 1 - Sensor 1 O2S B1 S1 mA mA X.XXX Bank 1 - Sensor 1 O2S Current O2S B1 S1 V V X.XXX Bank 1 - Sensor 1 O2S Voltage O2S B1 S2 V X.XXX Bank 1 - Sensor 2 O2S B1 S2 mA mA X.XXX Bank 1 - Sensor 2 O2S Current O2S B1 S2 V V X.XXX Bank 1 - Sensor 2 O2S Voltage O2S B1 S3 V X.XXX Bank 1 - Sensor 3 O2S B1 S3 mA mA X.XXX Bank 1 - Sensor 3 O2S Current O2S B1 S3 V V X.XXX Bank 1 - Sensor 3 O2S Voltage O2S B1 S4 V X.XXX Bank 1 - Sensor 4 O2S B1 S4 mA mA X.XXX Bank 1 - Sensor 4 O2S Current O2S B1 S4 V V X.XXX Bank 1 - Sensor 4 O2S Voltage O2S B2 S1 V X.XXX Bank 2 - Sensor 1 O2S B2 S1 mA mA X.XXX Bank 2 - Sensor 1 O2S Current O2S B2 S1 V V X.XXX Bank 2 - Sensor 1 O2S Voltage O2S B2 S2 V X.XXX Bank 2 - Sensor 2 O2S B2 S2 mA mA X.XXX Bank 2 - Sensor 2 O2S Current O2S B2 S2 V V X.XXX Bank 2 - Sensor 2 O2S Voltage O2S B2 S3 V X.XXX Bank 2 - Sensor 3 O2S B2 S3 mA mA X.XXX Bank 2 - Sensor 3 O2S Current O2S B2 S3 V V X.XXX Bank 2 - Sensor 3 O2S Voltage O2S B2 S4 V X.XXX Bank 2 - Sensor 4 O2S B2 S4 mA mA X.XXX Bank 2 - Sensor 4 O2S Current O2S B2 S4 V V X.XXX Bank 2 - Sensor 4 O2S Voltage O2S Location - O2S11 Oxygen Sensor, Bank 1, Sensor 1 O2S Location - O2S12 Oxygen Sensor, Bank 1, Sensor 2 O2S Location - O2S13 Oxygen Sensor, Bank 1, Sensor 3 O2S Location - O2S14 Oxygen Sensor, Bank 1, Sensor 4 O2S Location - O2S21 Oxygen Sensor, Bank 2, Sensor 1 O2S Location - O2S22 Oxygen Sensor, Bank 2, Sensor 1 O2S Location - O2S23 Oxygen Sensor, Bank 2, Sensor 3 O2S Location - O2S24 Oxygen Sensor, Bank 2, Sensor 4 O2S Location - O2S11 Oxygen Sensor, Bank 1, Sensor 1

OBD2 53

Generic (Global) OBD2 PID List

Tool Display Unit Value PID Description

O2S Location - O2S12 Oxygen Sensor, Bank 1, Sensor 2 O2S Location - O2S21 Oxygen Sensor, Bank 2, Sensor 1 O2S Location - O2S22 Oxygen Sensor, Bank 2, Sensor 2 O2S Location - O2S31 Oxygen Sensor, Bank 3, Sensor 1 O2S Location - O2S32 Oxygen Sensor, Bank 3, Sensor 2 O2S Location - O2S41 Oxygen Sensor, Bank 4, Sensor 1 O2S Location - O2S42 Oxygen Sensor, Bank 4, Sensor 2 OBD Support - OBD2 OBD Requirements OBD Support - OBD OBD Requirements OBD Support - OBD and OBD Requirements

OBD2 OBD Support - OBD 1 OBD Requirements OBD Support - No OBD OBD Requirements OBD Support - EOBD OBD Requirements OBD Support - EOBD and OBD Requirements

OBD2 OBD Support - EOBD and OBD Requirements

OBD

OBD Support - EOBD, OBD OBD Requirements

and OBD2 OBD Support - JOBD OBD Requirements OBD Support - JOBD and OBD Requirements

OBD2

OBD Support - JOBD and OBD Requirements

EOBD

OBD Support - JOBD, EOBD OBD Requirements

and OBD2 PTO Status - On / Off Power Take Off Status Rel TPS % XXX.X Relative Throttle Position Spark Adv deg XX Ignition Timing Advance #1

Cylinder STFT B1 % XXX.X Shor t Term Fuel Trim-Bank 1 STFT B1 S1 % XXX.X Bank 1 - Sensor 1 STFT B1 S2 % XXX.X Bank 1 - Sensor 2 STFT B1 S3 % XXX.X Bank 1 - Sensor 3 STFT B1 S4 % XXX.X Bank 1 - Sensor 4 STFT B2 % XXX.X Shor t Term Fuel Trim-Bank 2

54 OBD2

Generic (Global) OBD2 PID List

Tool Display Unit Value PID Description

STFT B2 S1 % XXX.X Bank 2 - Sensor 1 STFT B2 S2 % XXX.X Bank 2 - Sensor 2 STFT B2 S3 % XXX.X Bank 2 - Sensor 3 STFT B2 S4 % XXX.X Bank 2 - Sensor 4 STFT B3 % XXX.X Shor t Term Fuel Trim-Bank 3 STFT B4 % XXX.X Shor t Term Fuel Trim-Bank 4 Time DTC Clr hrs, min XXXX, XX Time since DTC Cleared Time Since sec XXXX Time Since Engine Start

Start TPS % XXX.X Absolute Throttle Position TPS B % XXX.X Absolute Throttle Position B TPS C % XXX.X Absolute Throttle Position C Veh Speed km/h / XXX / XXX Vehicle Speed Sensor

mph

Warm-up DTC - XXX # Warm-ups since DTC Cleared Clr

OBD2 55

Glossary

GLOSSARY OF TERMS AND ABBREVIATIONS

CARB – California Air Resources Board CCM – Central Control Module Computer Control System – An electronic control system, consisting

of an on-board computer and related sensors, switches and actuators, used to ensure peak performance and fuel efficiency while reducing pollutants in the vehicle’s emissions.

DIY – Do-It-Yourself DLC – Data Link Connector Drive Cycle – An extended set of driving procedures that takes into

consideration the various types of driving conditions encountered in real life.

Driving Condition – A specific environmental or operation condition under which a vehicle is operated; such as starting the vehicle when cold, driving at steady speed (cruising), accelerating, etc.

DTC(s) – Diagnostic Trouble Code(s) EGR – Exhaust Gas Recirculation EPA – Environmental Protection Agency EVAP – Evaporative Emissions System Fault Code – See DTCs Freeze Frame – A digital representation of engine and/or emissions

system conditions present when a fault code was recorded.

FTP – Fuel Tank Pressure Generic Code – A DTC that applies to all OBD 2 compliant vehicles. I/M Readiness – An indication of whether or not a vehicle’s emissions-

related system are operating properly and are ready for Inspection and Maintenance testing.

I/M Test / Emissions Test / Smog Check – A functional test of a vehicle to determine if tailpipe emissions are within Federal/State/Local requirements.

LCD – Liquid Crystal Display LED – Light Emitting Diode LTFT – Long Term Fuel Trim, is a program in the vehicle’s computer

designed to add or subtract fuel from the vehicle to compensate for operating conditions that vary from the ideal A/F ratio (long term).

Manufacturer Specific Code – A DTC that applies only to OBD 2 compliant vehicles made by a specific manufacturer.

MIL – Malfunction Indicator Lamp (also referred to as “Check Engine” light

OBD 1 – On-Board Diagnostics Version 1 (also referred to as “OBD I”)

56 OBD2

Glossary

GLOSSARY OF TERMS AND ABBREVIATIONS

OBD 2 – On-Board Diagnostics Version 2 (also referred to as “OBD II”) On-Board Computer – The central processing unit in the vehicle’s

computer control system.

PCM – Powertrain Control Module Pending Code – A code recorded on the “first trip” for a “two-trip”

code. If the fault that caused the code to be set is not detected on the second trip, the code is automatically erased.

PID – Parameter Identification STFT – Shor t Term Fuel Trim, is a program in the vehicle’s computer

designed to add or subtract fuel from the vehicle to compensate for operating conditions that vary from the ideal A/F ratio.The vehicle uses this program to make minor fuel adjustments (fine tune) on a shortterm basis.

T rip Drive Cycle – Vehicle operation that provides the necessary driving condition to enable a vehicle Monitor to run and complete its diagnostic testing.

VECI – Vehicle Emission Control Information Decal

Warranty and Servicing

OBD2 57

LIMITED ONE YEAR WARRANTY

The Manufacturer warrants to the original purchaser that this unit is free of defects in materials and workmanship under normal use and maintenance for a period of one (1) year from the date of original purchase.

If the unit fails within the one (1) year period, it will be repaired or replaced, at the Manufacturer’s option, at no charge, when returned prepaid to the Service Center with Proof of Purchase. The sales receipt may be used for this purpose. Installation labor is not covered under this warranty. All replacement parts, whether new or remanufactured, assume as their warranty period only the remaining time of this warranty.

This warranty does not apply to damage caused by improper use, accident, abuse, improper voltage, service, fire, flood, lightning, or other acts of God, or if the product was altered or repaired by anyone other than the Manufacturer’s Service Center.

The Manufacturer, under no circumstances shall be liable for any consequential damages for breach of any written warranty of this unit.This warranty gives you specific legal rights, and you may also have rights, which vary from state to state.This manual is copyrighted with all rights reserved.No portion of this document may be copied or reproduced b y any means without the express written permission of the Manufacturer . THIS WARRANTY IS NOT TRANSFERABLE. For service, send via U.P.S. (if possible) prepaid to Manufacturer. Allow 3-4 weeks for service/repair.

SERVICE PROCEDURES

If you have any questions, require technical suppor t or information on UPDATES and OPTIONAL ACCESSORIES, please contact your local store, distributor or the Service Center.

USA & Canada:

(800) 544-4124 (6:00 AM-6:00 PM, Monday-Friday PST)

All others: (714) 241-6802 (6:00 AM-6:00 PM, Monday-Friday PST) FAX: (714) 432-7511 (24 hr.) Web: www

.CanOBD2.com

Innova Electronics Corp.

PRODUCT DESIGN & COPYRIGHT

17291 Mt. Herrmann Street Fountain Valley, CA 92708 Printed in Taiwan

Instruction MRP #93-0099

Equus 3130 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual