DTC U1651: Chassis System Dedicated Bus Sensor Malfunction (Intrigue): Diagnosis
- Perform DIAGNOSTIC SYSTEM CHECK under DIAGNOSIS & TESTING. Go to next step.
- Turn ignition off. Disconnect steering angle sensor connector. Using DVOM, check ignition circuit (Pink wire) for open. If problem was found, repair as necessary. After repairs, go to step 12 . If problem was not found, go to next step.
- Disconnect EBCM connector. Install Universal Pinout Box (J 39700) with Cable Adapter (J 39700-530) between EBCM and the EBCM connector. Disconnect steering angle sensor. Using DVOM, check ground circuit (Gray/Black wire) for open. If problem was found, repair as necessary. After repairs, go to step 12 . If problem was not found, go to next step.
- Using DVOM, check CAN HI circuit (Tan/White wire) for open. If problem was found, repair as necessary. After repairs, go to step 12 . If problem was not found, go to next step.
- Using DVOM, check CAN LO circuit (Tan wire) for open. If problem was found, repair as necessary. After repairs, go to step 12 . If problem was not found, go to next step.
- Check steering angle sensor connector for poor connections. If problem was found, repair as necessary. After repairs, go to step 12 . If problem was not found, go to next step.
- Check EBCM connector for poor connections. If problem was found, repair as necessary. After repairs, go to step 12 . If problem was not found, go to next step.
- Perform steering angle sensor centering procedure. See STEERING ANGLE SENSOR CENTERING under PROGRAMMING. If centering procedure was successfully completed, go to next step. If centering procedure was not successfully completed, go to step 10 .
- Using scan tool, clear DTCs. Test drive vehicle. See DIAGNOSTIC TEST DRIVE under DTC C0252: ACTIVE BRAKE CONTROL SENSORS UNCORRELATED (INTRIGUE). If DTC U1651 reset, go to step 11 . If DTC U1651 did not reset, go to step 12 .
- Replace steering angle sensor. See appropriate STEERING COLUMNS article in STEERING. After repairs, go to step 12 .
- Replace EBCM. See ELECTRONIC BRAKE CONTROL MODULE under REMOVAL & INSTALLATION. After repairs, go to next step.
- Using scan tool, clear DTCs. Operate vehicle. If DTC does not reset, system is okay.