A Symptom Diagnosis

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

1. Perform Diagnostic System Check - Instrument Cluster and Diagnostic System Check - Audible Warnings before using the Symptom Tables in order to verify that all of the following are true:
^ There are no DTCs set.
^ The control module(s) can communicate via the serial data link. Diagnostic System Check - Instrument Panel Cluster Diagnostic System Check - Audible Warnings
2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
^ Instrument Panel Cluster (IPC) Description and Operation
^ Indicator/Warning Message Description and Operation
^ Driver Information Center (DIC) Description and Operation
^ Audible Warnings Description and Operation

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Instrument Cluster or Audible Warning Systems. Refer to Checking Aftermarket Accessories in Diagnostic Aids.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
^ Inspect the applicable reservoir for the proper fluid level related to the indicator or message.
^ Verify that the indicators work properly during the displays test.

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

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

Gages
^ Engine Coolant Temperature Gage Inaccurate or Inoperative
^ Engine Oil Pressure Gage Inaccurate or Inoperative
^ Fuel Gage Inaccurate or Inoperative
^ Speedometer and/or Odometer Inaccurate or Inoperative
^ Tachometer Inaccurate or Inoperative
^ Volt Gage 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
^ Brake Warning Indicator Always On in Hydraulic Brakes. Brake Warning Indicator Always On
^ Brake Warning Indicator Inoperative in Hydraulic Brakes. Symptom Related Diagnostic Procedures
^ Change Engine Oil Indicator Always On
^ Charge Indicator Always On in Starting and Charging. Charge Indicator Always On
^ Charge Indicator Inoperative in Starting and Charging. Charge Indicator Inoperative
^ Cruise Control Indicator Always On in Cruise Control. Testing and Inspection
^ Cruise Control Indicator Inoperative in Cruise Control. Testing and Inspection
^ Fasten Safety Belt Indicator/Chime Always On in Seat Belts. Fasten Safety Belt Indicator/Chime Always On
^ Fasten Safety Belt Indicator/Chime Inoperative in Seat Belts. Fasten Safety Belt Indicator/Chime Inoperative
^ High Beam Indicator Always On in Lighting Systems. Testing and Inspection
^ High Beam Indicator Inoperative in Lighting Systems. Testing and Inspection
^ Malfunction Indicator Lamp (MIL) Always On in Computers and Controls Systems. Malfunction Indicator Lamp (MIL) Always On
^ Malfunction Indicator Lamp (MIL) Inoperative in Computers and Controls Systems. Malfunction Indicator Lamp (MIL) Inoperative
^ Low Fuel Indicator Inoperative
^ Rear Hatch/Gate Ajar Indicator Always On in Trunk/Liftgate. Testing and Inspection
^ Rear Hatch/Gate Ajar Indicator Inoperative in Trunk/Liftgate. Testing and Inspection
^ Security Indicator Inoperative in Theft Systems. Testing and Inspection
^ Service Indicator Always On in One Speed Automatic Transfer Case.
^ Service Indicator Inoperative in One Speed Automatic Transfer Case.
^ Service Indicator Always On in Two Speed Automatic Transfer Case.
^ Service Indicator Inoperative in Two Speed Automatic Transfer Case.
^ 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
Driver Information Center (DIC) Switch(es) Inoperative

Instrument Cluster Dimming
^ Interior Backlighting Does Not Dim in Lighting Systems. Testing and Inspection
^ Interior Backlighting Inoperative in Lighting Systems. Testing and Inspection

Odometer
Odometer Trip/Reset Switch Inoperative

Audible Warning
^ Chime Always On
^ Chime Inoperative