Diagnostic Test

ANTI-LOCK BRAKE SYSTEM (ABS) MODULE INTERNAL CONDITION 

1. The ABS Module is reporting internal errors.
2. Verify that the Anti-lock Brake System (ABS) Module or the Hydraulic Control Unit (HCU) were not replaced individually from another vehicle.
   NOTE:

   Before continuing, check the Anti-lock Brake System (ABS) Module harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

3. Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.
4. Perform any Technical Service Bulletins that may apply.

   Were there any problems found?

   Yes 

   • Repair as necessary.
   • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .

   No 

   • Replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), REMOVAL AND INSTALLATION .
   • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .