A Preliminary Information

1. Perform the Diagnostic System Check - Instrument Cluster or Diagnostic System Check - Audible Warnings before using the Symptom Tables in order to verify that all of the following are true: [1][2]Diagnostic System Check - Audible Warnings
^ 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
^ Driver Information Center (DIC) Description and Operation
Indicator/Warning Message Description and Operation
^ Instrument Panel Cluster (IPC) 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 Diagrams.
^ 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 and Poor Connections in Diagrams.

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
^ Fuel Gage Inaccurate or Inoperative
^ Speedometer and/or Odometer Inaccurate or Inoperative
^ Tachometer Inaccurate or Inoperative

Indicators
^ ABS Indicator Always On in Antilock Brake System ABS Indicator Always On
^ ABS Indicator Inoperative in Antilock Brake System ABS Indicator Inoperative
^ Air Bag Indicator Circuit Malfunction in Restraint Systems Symptom Related Diagnostic Procedures
^ Brake Warning Indicator Always On in Hydraulic Brakes Brake Warning Indicator Always On
^ Brake Warning Indicator Inoperative in Hydraulic Brakes Symptom Related Diagnostic Procedures
^ Charge Indicator Always On in Starting and Charging Symptom Related Diagnostic Procedures
^ Charge Indicator Inoperative in Starting and Charging Symptom Related Diagnostic Procedures
^ Cruise Control Indicator Always On in Cruise Control Testing and Inspection
^ Cruise Control Indicator Inoperative in Cruise Control Testing and Inspection
^ Door Ajar Indicator Malfunction in Doors Testing and Inspection
^ Engine Coolant Temperature Indicator Always On in Cooling System Symptom Related Diagnostic Procedures
^ Engine Oil Pressure Indicator Always On
^ Fog Lamp Indicator Inoperative in Lighting Systems Testing and Inspection
^ Headlamps Suggested Message On in Daylight Conditions in Lighting Systems Testing and Inspection
^ High Beam Indicator Always On in Lighting Systems Testing and Inspection
^ High Beam Indicator Inoperative in Lighting Systems Testing and Inspection
^ Lights On Indicator Inoperative in Lighting Systems Testing and Inspection
^ Low Engine Coolant Indicator Always On in Cooling System Low Engine Oil Level Indicator Always On
^ Low Washer Fluid Indicator Malfunction in Wipers/Washer Systems Testing and Inspection
^ Malfunction Indicator Lamp (MIL) Always On in Computers and Controls Systems - 4.6L Malfunction Indicator Lamp (MIL) Always On
^ Malfunction Indicator Lamp (MIL) Inoperative in Computers and Controls Systems - 4.6L Malfunction Indicator Lamp (MIL) Inoperative
^ Seat Belt Indicator Circuit Malfunction in Seat Belts Seat Belt Indicator Circuit Malfunction
^ Security Indicator Inoperative in Theft Deterrent Testing and Inspection
^ Traction Control Indicator Always On in Antilock Brake System Traction Control Indicator Always On
^ Traction Control Indicator Inoperative in Antilock Brake System Symptom Related Diagnostic Procedures
^ Traction Off Indicator Inoperative in Antilock Brake System Symptom Related Diagnostic Procedures
^ Turn Signal Lamps and/or Indicators Always On or Flashing in Lighting Systems Testing and Inspection
^ Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems Testing and Inspection

Driver Information Center (DIC)
Driver Information Center (DIC) Switch(es) Inoperative

Audible Warnings
^ Chime Always On
^ Chime Inoperative