Diagnostic Test

PERFORM ABS INTERMITTENT CONDITION TEST 

1. Perform any Technical Service Bulletins (TSBs) that may apply.
2. Review the scan tool Environmental Data (EV Data). If possible, try to duplicate the conditions under which the DTC set.
3. Turn the ignition off.
4. Visually inspect the related wire harness. Disconnect all the related harness connectors. Look for any chafed, pierced, pinched, partially broken wires and broken, bent, pushed out, or corroded terminals.
5. Wiggle the wires while checking for shorts and open circuits.
6. Perform a voltage drop test on the related circuits between the suspected inoperative component and the Anti-lock Brake System (ABS) Module.
7. Inspect and clean all ABS, EVCU, PIM, RBC, engine, and chassis grounds that are related to the most current DTC.
8. If numerous trouble codes were set, use a wire schematic and look for any common ground or supply circuits
9. For any Relay DTCs, actuate the Relay with the scan tool and wiggle the related wire harness to try to interrupt the actuation.
10. Use the scan tool to perform a System Test if one applies to failing component.
11. A co-pilot, data recorder, or lab scope should be used to help diagnose intermittent conditions.
12. Test drive the vehicle over 15 km/h (9 mph).

    Were any problems found during the above inspections?

    Yes 

    • Perform the necessary repairs.
    • Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST  .

    No 

    • Test Complete, the condition or conditions that originally set this DTC are not present at this time.