For 1990-2009 cars only
Important: The following steps must be completed before using the symptom tables.
- Perform Diagnostic System Check - Instrument Cluster before using the Symptom Tables in order to verify that all of the following are true:
- Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
| • | There are no DTCs set. |
| • | The control module(s) can communicate via the serial data link. |
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 Wiring Systems. |
| • | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. |
| • | Inspect the reservoirs for the proper fluid levels before beginning diagnosis. |
| • | Inspect the applicable reservoir for the proper fluid level related to the indicator. |
| • | Verify that the indicators work properly during the bulb check. |
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:
Gauges
Indicators
| • | ABS Indicator Always ON or Inoperative. Refer to Diagnostic System Check in Antilock Brake System. |
| • | AIR BAG Indicator Always ON or Inoperative. Refer to Diagnostic System Check - SIR in SIR. |
| • | Brake Warning Indicator Always On in Hydraulic Brakes. |
| • | Brake Warning Indicator Inoperative in Hydraulic Brakes. |
| • | SECURITY Indicator Always On or Inoperative. Refer to Diagnostic System Check - Theft Deterrent in Theft Deterrent. |
| • | SERVICE ENGINE SOON Indicator (MIL) Always On or Inoperative. Refer to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 4.3L. |
| • | Fasten Safety Belt Indicator/Chime Always On in Seat Belts. |
| • | Fasten Safety Belt Indicator/Chime Inoperative in Seat Belts. |
| • | High Beam Indicator Always On in Lighting Systems. |
| • | High Beam Indicator Inoperative in Lighting Systems. |
| • | Turn Signal Indicators Inoperative in Lighting Systems. |
| • | Turn Signal Indicators Inoperative in Lighting Systems. |
| • | Charge Indicator Always On in Engine Electrical. |
| • | Charge Indicator Inoperative in Engine Electrical. |
| • | CHECK GAGES Indicator Always ON or Inoperative. Refer to Diagnostic System Check - Instrument Cluster . |
| • | SERVICE AWD Indicator Always ON or Inoperative. Refer to Diagnostic System Check in Transfer Case. |
| • | TOW/HAUL Indicator Always ON or Inoperative. Refer to Tow/Haul Switch/Indicator Always On or Inoperative in Automatic Transmission - 4L60E. |
| • | Overspeed Indicator Always ON or Inoperative. Refer to Diagnostic Starting Point in Audible Warnings (Export Only). |
Instrument Cluster Dimming
| • | Instrument Cluster Illumination Lamps Inoperative in Lighting Systems. |
| • | Instrument Cluster Illumination Lamps Always On in Lighting Systems. |
Odometer
PRNDL Display
