ABS Indicator Always On

ABS Indicator Always On

Circuit Description
The instrument panel cluster (IPC) turns the antilock brake system (ABS) indicator ON during the IPC bulb check for approximately 3 seconds when the ignition switch is turned to the ON position. If the electronic brake control module (EBCM) sets a DTC, the EBCM sends the IPC the command to turn the ABS indicator ON.

Diagnostic Aids
^ It is very important that a thorough inspection of the wiring and connectors be performed. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
^ Thoroughly inspect any circuitry that may be causing the complaint for the following conditions:
^ Backed out terminals
^ Improper mating
^ Broken locks
^ Improperly formed or damaged terminals
^ Poor terminal-to-wiring connections
^ Physical damage to the wiring harness
^ The following conditions may cause an intermittent malfunction:
^ A poor connection
^ Rubbed-through wire insulation
^ A broken wire inside the insulation
^ If an intermittent malfunction exists, refer to Inducing Intermittent Fault Conditions.

Test Description





The numbers below refer to step numbers on the diagnostic table.
2. Checks if the IPC has the ability to turn the ABS indicator OFF or if the EBCM is sending an incorrect command to turn the ABS indicator ON.