C1231

DTC C1231 MALFUNCTION IN STEERING ANGLE SENSOR CIRCUIT

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The steering angle sensor signal is sent to the skid control ECU through CAN communication system. When there is malfunction in communication system, the DTC will be detected by the diagnosis function.

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE

HINT:
- When U0121/94, U0123/62, U0124/95 or U0126/63 is output accompanied with C1231/31, inspect and repair the trouble areas indicated by U0121/94, U0123/62, U0124/95 or U0126/63 first.
- When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering angle sensor may be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw rate sensor are output accompanied with other DTCs for the steering angle sensor, inspect and repair the speed sensor and yaw rate sensor first, and then inspect and repair the steering angle sensor.