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.
•  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.
•  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.
•  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.