Diagnostic Test

VERIFY THE DTC IS ACTIVE
1. Perform any Service Bulletins that may apply.
2. Turn the ignition on.
3. With the scan tool, read and record the ABS DTCs on the repair order.
4. With the scan tool, erase ABS DTCs.
5. Start the engine.
6. Press and release the brake pedal.
7. With the scan tool, read ABS DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Perform ABS INTERMITTENT CONDITION diagnostic procedure. Refer to ABS INTERMITTENT CONDITION .
PERFORM THE PRESSURE SENSOR CALIBRATION ROUTINE
1. With the scan tool, perform the Pressure Sensor Calibration routine.
  Was the routine successful?
  
  Yes
  - The condition or conditions that originally set this DTC are not present at this time. Using the appropriate SYSTEM WIRING DIAGRAMS as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension and repair as necessary. If no problems are found, test complete.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Perform the Pressure Sensor Calibration routine again, if still unsuccessful.
  - Replace the Integrated Control Unit (ICU) in accordance with the Service Information. Refer to INTEGRATED CONTROL UNIT (ICU), REMOVAL AND INSTALLATION .
    NOTE:
    For this failure it is necessary to replace both the ABS Module and the HCU as a complete unit.