Important: Review the system operation in order to familiarize yourself with the system functions.
Refer to the following:
• | Inspect for aftermarket devices which could affect the operation of the Instrument Panel Cluster (IPC). 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. |
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
• | ABS Indicator Always On in Antilock Brake System |
• | ABS Indicator Inoperative in Antilock Brake System |
• | Air ABS Indicator Always On in Air Antilock Brake System |
• | Air ABS Indicator Inoperative in Air Antilock Brake System |
• | Air Suspension Dump Indicator Inoperative in Air Suspension |
• | 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 |
• | Daytime Running Lamps (DRL) Indicator Inoperative in Lighting Systems |
• | Differential Lock Indicator Inoperative in Rear Axle Controls |
• | High Beam Indicator Inoperative in Lighting Systems |
• | 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 Air Brakes |
• | Primary Brake Warning Indicator Always On in Hydraulic Brakes |
• | Primary Brake Warning Indicator Inoperative in Air 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 |
• | Trailer ABS Indicator Always On in Air Antilock Brake System |
• | Trailer ABS Indicator Inoperative in Air Antilock Brake System |
• | Turn Signal Lamps and/or Indicators Always On or Flashing in Lighting Systems |
• | Turn Signal Lamps and/or Indicators Inoperative in Lighting Systems |
• | Interior Backlighting Does Not Dim in Lighting Systems |
• | Interior Backlighting Inoperative in Lighting Systems |