For 1990-2009 cars

Important: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Instrument Cluster before using the Symptom Tables in order to verify that all of the following are true:

• | There are no DTCs set.

• | The control modules can communicate via the serial data link.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:

• | Audible Warnings Description and Operation

• | Indicator/Warning Message Description and Operation

• | Instrument Cluster Description and Operation

### Visual/Physical Inspection

• | Inspect for aftermarket devices which could affect the operation of the instrument panel cluster or audible warnings system. Refer to Checking Aftermarket Accessories in Wiring Systems.

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

• | Inspect for the proper fluid levels.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

### Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

#### Gages and Odometer

• | Engine Coolant Temperature Gage Inaccurate or Inoperative

• | Engine Oil Pressure Gage Inaccurate or Inoperative

• | Fuel Gage Inaccurate or Inoperative

• | Hourmeter Inaccurate or Inoperative

• | Speedometer and/or Odometer Inaccurate or Inoperative

• | Tachometer Inaccurate or Inoperative

• | Transmission Fluid Temperature Gage Inaccurate or Inoperative

• | Volt Gage Inaccurate or Inoperative

#### IPC Indicators

• | ABS Indicator Always On in Antilock Brake System

• | ABS Indicator Inoperative in Antilock Brake System

• | Air Suspension Dump Indicator Inoperative in Air Suspension

• | Air ABS Indicator Always On in Air Antilock Brake System

• | Air ABS Indicator Inoperative in Air Antilock Brake System

• | Apply Park Brake Indicator Always On in Park Brake

• | Apply Park Brake Indicator Inoperative in Park Brake

• | Auxiliary Brake Warning Indicator Always On in Hydraulic Brakes

• | Auxiliary Brake Warning Indicator Inoperative in Hydraulic Brakes

• | Charge Indicator Always On in Engine Electrical

• | Charge Indicator Inoperative in Engine Electrical

• | Check Gages Indicator Always On

• | Check Gages Indicator Inoperative

• | Daytime Running Lamps (DRL) Indicator Inoperative in Lighting Systems

• | Differential Lock Indicator Inoperative in Drive Axle -- Locking Limited Slip

• | High Beam Indicator Inoperative in Lighting Systems

• | Low Air Indicator Always On in Air Brakes

• | Low Air Indicator Inoperative in Air Brakes

• | Low Engine Coolant Indicator Always On in Engine Cooling

• | Park Brake Indicator Always On in Park Brake

• | Park Brake Indicator Inoperative in Park Brake

• | Primary Brake Warning Indicator Always On in Hydraulic Brakes

• | Primary Brake Warning Indicator Inoperative in Hydraulic Brakes

• | Service Park Brake Indicator Always On in Park Brake

• | Service Park Brake Indicator Inoperative in Park Brake

• | Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems

#### DIC Indicators

• | Change Engine Oil Indicator Always On

• | Change Engine Oil Indicator Inoperative

• | Fasten Safety Belt Indicator/Chime Always On in Seat Belts

• | Fasten Safety Belt Indicator/Chime Inoperative in Seat Belts

• | Trailer ABS Indicator Always On in Air Antilock Brake System

• | Trailer ABS Indicator Inoperative in Air Antilock Brake System

#### Instrument Cluster Dimming

• | Interior Backlighting Does Not Dim in Lighting Systems

• | Interior Backlighting Inoperative in Lighting Systems