Pinpoint Test

1. Inspect the brake pedal position switch and make sure it is installed correctly. Check the stoplamps for correct operation by pressing and releasing the brake pedal and observing the stoplamps.

Do the stoplamps operate correctly? 

1. Yes: GO to 2  .
2. No: REFER to SYMPTOM CHART: STOPLAMPS .

1. Ignition ON.
2. Using a scan tool, carry out the ABS module self-test.

Are any communication (U-code) DTCs present? 

1. Yes: REFER to DTC Chart: Anti-Lock Brake System (ABS) Module .
2. No: GO to 3  .

1. Using a scan tool, carry out the PCM KOEO self-test.

Are any DTCs present in the PCM? 

1. Yes: REFER to DIAGNOSTIC TROUBLE CODE (DTC) CHARTS AND DESCRIPTIONS .
2. No: GO to 4  .

1. Ignition OFF.
2. Disconnect and inspect the ABS Module electrical connector.
3. Repair:
   • corrosion (install new connector or terminal - clean module pins)
   • damaged or bent pins - install new terminals/pins
   • pushed-out pins - install new pins as necessary
4. Connect the ABS Module electrical connector. Make sure it seats and latches correctly.
5. Operate the system and determine if the concern is still present.

Is the concern still present? 

1. Yes: CHECK OASIS  for any applicable TSBs  . If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions.

   If no TSBs  address this concern and the vehicle is not equipped with adaptive cruise control, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module .

   If no TSBs  address this concern and the vehicle is equipped with adaptive cruise control, INSTALL a new ABS module and HCU. REFER to Hydraulic Control Unit (HCU) . Note ABS module and HCU are removed as an assembly.

2. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.