Pinpoint Test G: The Yellow Anti-Lock Brake System (Abs) Warning Indicator Is Always On
- G1 CHECK FOR DTCs
- Connect the scan tool.
- Key in ON position.
- Retrieve the ABS module DTCs.
- Are DTCs present?
Yes : If the DTCs retrieved are related to the concern, go to the ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) INDEX to continue diagnostics.
No : GO to G2.
- G2 CARRY OUT THE INSTRUMENT CLUSTER ABS WARNING INDICATOR ACTIVE COMMAND
- Enter the following diagnostic mode on the scan tool: Instrument Cluster Active Command.
- Command all warning lamps ON then OFF.
- Does the yellow ABS warning indicator continue to illuminate?
Yes : GO to G3.
No : GO to G4.
- G3 CHECK FOR CORRECT INSTRUMENT CLUSTER MODULE OPERATION
- Disconnect the instrument cluster connector.
- Check for:
- Corrosion.
- Pushed-out pins.
- Spread terminals.
- 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.
- G4 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect the ABS module connector.
- Check for:
- Corrosion.
- Pushed-out pins.
- Spread terminals.
- Connect the ABS module 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. REPEAT the self-test.