DTC C1278, C1295, U2023 [DSC/RSC]

id0402b3815000

DTC | C1278, C1295, U2023 | Steering angle sensor system
DETECTION CONDITION | • C1278 ― The steering angle sensor detects an abnormality in the signal. • C1295, U2023 ― The steering angle sensor detects an internal abnormality.
POSSIBLE CAUSE | • Excessive grease is adhering to solid disc for steering angle detection • Steering angle sensor malfunction • DSC/RSC HU/CM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT FOR BCM MALFUNCTION • Turn the ignition switch off. • Using the M-MDS, perform the DTC inspection for the BCM. (See DTC INSPECTION [BCM].) • Are any DTCs detected? | Yes | Go to applicable DTC inspection. (See DTC TABLE [BCM].)
No | Go to the next step.
2 | INSPECT SOLID DISC FOR STEERING ANGLE DETECTION • Visually inspect the solid disc for the steering angle detection. (See COMBINATION SWITCH REMOVAL/INSTALLATION.) • Is excessive grease adhering? | Yes | Wipe off excessive grease using a cloth, then go tothe next step.
No | Go to the next step.
3 | VERIFY DTC TROUBLESHOOTING COMPLETED • Clear the DTC from the memory. (See ON-BOARD DIAGNOSIS [DSC/RSC].) • Are the same DTCs present? | Yes | Replace the DSC/RSC HU/CM, then go to the next step. (See DSC/RSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC/RSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
No | Go to the next step.
4 | VERIFY AFTER REPAIR PROCEDURE • Are any other DTCs present? | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DSC/RSC].)
No | DTC troubleshooting completed.