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Diagnostic Test

  1. VERIFY DTC IS ACTIVE 
    NOTE:

    Make sure the battery voltage is between 10 and 16 volts before proceeding.

    1. With the scan tool, read active DTCs.

      Is this DTC active?

      Yes 

      • Go To  2

      No 

  2. CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS 
    1. With the scan tool, read all active DTCs from all modules.
      NOTE:

      Check for BCM configuration, CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.

      Does the scan tool display any active DTCs to the conditions listed above?

      Yes 

      • Go to and perform the appropriate diagnostic procedure.

      No 

      • Go To  3
  3. VERIFY THE ABS IS ACTIVE ON THE BUS 
    1. Turn the ignition on.
    2. With the scan tool, verify the ABS is active on the bus.

      Is the ABS active on the bus?

      Yes 

      • Go To  4

      No 

  4. CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS 
    1. With the scan tool, read all the DTCs.

      Is there more than one module with active DTCs "Logged Against" the ABS?

      Yes 

      No 

      • Go To  5
  5. CLEAR DTC IN MODULE SETTING FAULT 
    1. With the scan tool, select the module setting the DTC against the ABS.
    2. Clear active DTCs.

      Is this DTC still active?

      Yes 

      • Replace/update the module that set this DTC in accordance with the Service Information.
      • Perform the appropriate verification test for the module being replaced. If there is no verification test for the associated module perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST  .

      No 

      • Test Complete.