DTC C1295, C1307, C1937, C1938, C1956 [DYNAMIC STABILITY CONTROL (DSC)]

id0402b2801900

DTC
C1295, C1307, C1937, C1938, C1956
Steering angle sensor system
DETECTION CONDITION
•  C1295
―  Steering angle sensor malfunction is detected by CAN signal from the steering angle sensor.
•  C1307
―  Steering angle signal error from the steering angle sensor is continuously detected for 100 ms.
•  C1937
―  The difference between the steering angle calculated by each sensor and the steering angle from the steering angle sensor exceeds the specification.
•  C1938
―  Condition 1
•  Variation of the steering angle sensor signal exceeds the specified value, or does not vary at all.
―  Condition 2
•  When comparing the yaw rate value calculated from the ABS wheel-speed sensor signal and steering angle sensor signal with the yaw rate sensor signal, one is + and the other is - while the vehicle is moving forward.
•  C1956
―  There is no signal received from the steering angle sensor.
POSSIBLE CAUSE
•  Deviation of the steering wheel center position due to improper front wheel alignment
•  Improper installation or positioning of the steering angle sensor
•  Steering angle sensor malfunction
•  Poor connection at connectors (female terminal)

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT STEERING WHEEL FOR OFF-CENTER
•   Drive the vehicle and inspect the steering wheel position while driving in a straight line.
•  Is the steering wheel off-center?
Yes
Go to the next step.
No
Inspect and adjust the front wheel alignment to correct the steering wheel alignment.
(See FRONT WHEEL ALIGNMENT.)
Go to Step 3.
2
INSPECT STEERING ANGLE SENSOR
•  Inspect the steering angle sensor.
•  Is the steering angle sensor normal?
Yes
Go to the next step.
No
Replace the steering angle sensor, then go to the next step.
(See STEERING ANGLE SENSOR REMOVAL/INSTALLATION.)
3
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Clear the DTC from the memory.
•  Start the engine and drive the vehicle.
•  Are the same DTCs present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the DSC HU/CM.
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 [DYNAMIC STABILITY CONTROL (DSC)].)
No
DTC troubleshooting completed.