Pinpoint Test H: The Yellow Anti-Lock Brake System (Abs) Warning Indicator Is Always On

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.

H1 CHECK FOR DTCs
- Connect the scan tool.
- Key in ON position.
- Retrieve the ABS module DTCs.
- Any 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 H2.
H2 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 H3.

No: GO to H4.
H3 CHECK FOR CORRECT INSTRUMENT CLUSTER MODULE OPERATION
- Disconnect: 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 REMOVAL AND INSTALLATION . 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.
H4 CHECK FOR CORRECT ABS MODULE OPERATION
- Disconnect: ABS Module C135.
- Check for:
  - corrosion.
  - pushed-out pins.
- 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.