C1232

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1232, C1243, C1245: Acceleration Sensor Stuck Malfunction


DESCRIPTION

The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system.

The yaw rate sensor has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2).

If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.

These DTCs are also output when calibration has not been completed.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When replacing the yaw rate and acceleration sensor, perform zero point calibration Programming and Relearning.

HINT
When DTC U0123, U0124 and/or U0126 is output together with DTC C1232, C1243, and/or C1245, inspect and repair the trouble areas indicated by DTC U0123, U0124 and/or U0126 first Vehicle Stability Control System.

PROCEDURE

1. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

(a) Check that the yaw rate and acceleration sensor has been installed properly Installation.

OK:

The sensor is tightened to the specified torque.

The sensor is not installed in a tilted position.

NOTICE:
Check the yaw rate and acceleration sensor signal after replacement Test Mode Procedure.

HINT
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Problem Symptoms Table.

NG -- INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Installation

OK -- REPLACE YAW RATE AND ACCELERATION SENSOR Removal