Pinpoint Test K: The Anti-Lock Brake System (Abs) Indicator Is Always On
- K1 CHECK THE ANTI-LOCK BRAKE SYSTEM (ABS) MODULE FOR DTCs
- Check for recorded ABS module DTCs from the continuous and on-demand self-tests.
- Are any DTCs present?
- K2 CHECK THE POWERTRAIN CONTROL MODULE (PCM) FOR DTCs
- Retrieve and document continuous DTCs for the PCM.
- Are any DTCs retrieved?
- K3 CARRY OUT THE INSTRUMENT CLUSTER WARNING LAMPS COMMAND USING THE DIAGNOSTIC TOOL
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command..
- Trigger the ABS lamp active command on and off.
- Does the ABS warning indicator illuminate when triggered on, and turn off when triggered off?
- Yes
: GO to K4.
- No
: GO to K5.
- K4 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect the ABS connector.
- Check for:
- corrosion
- pushed-out pins
- Connect the ABS connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes
: INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the DTCs. REPEAT the self-test.
- No
: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CARRY OUT the self-test with the brake pedal not applied.
- K5 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
- corrosion
- pushed-out pins
- Connect the instrument cluster connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes
: INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER
. CLEAR the DTCs. REPEAT the self-test.
- No
: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.