VEHICLE STABILITY CONTROL SYSTEM(for TMMF Made), Diagnostic DTC:C1232, C1234, C1279

DTC Code DTC Name
C1232 Acceleration Sensor Stuck Malfunction
C1234 Yaw Rate Sensor
C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)

DESCRIPTION

The skid control ECU (brake actuator assembly) receives signals from the yaw rate sensor (airbag sensor assembly) via the CAN communication system.

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

If there is trouble in the bus lines between the yaw rate sensor (airbag sensor assembly) and the CAN communication system, the DTCs U0123 (malfunction in CAN communication with the yaw rate sensor module) are output.

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

DTC No. DTC Detection Condition Trouble Area
C1232 Abnormal deference between yaw rate and deceleration sensor and steering angle sensor signals continues for approximately 2 seconds or more during driving.

  • Yaw rate sensor (Airbag sensor assembly)

  • Yaw rate sensor (Airbag sensor assembly) circuit
C1234

  1. Yaw rate sensor signal is change to 10 deg/s or more at vehicle stand still condition.

  2. Abnormal deference between yaw rate and deceleration sensor and steering angle sensor signals continues for approximately 2 seconds or more during driving.

  • Yaw rate sensor (Airbag sensor assembly)

  • Yaw rate sensor (Airbag sensor assembly) circuit
C1279 Detected only during Test Mode.

  • Yaw rate sensor (Airbag sensor assembly)

  • Sensor installation

WIRING DIAGRAM

A01VGP9E01
*1 Yaw Rate Sensor (Airbag Sensor Assembly)
*2 Skid Control ECU (Brake Actuator Assembly)
*3 CAN Communication line

CAUTION / NOTICE / HINT

Note


  • When replacing the brake actuator assembly, perform calibration Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. CHECK YAW RATE SENSOR (AIRBAG SENSOR ASSEMBLY) INSTALLATION


    1. Turn the ignition switch off.

    2. Check that the yaw rate sensor (airbag sensor assembly) has been installed properly Click here.

      OK
      The sensor should be tightened to the specified torque.
      The sensor should not be tilted.

    OK

    REPLACE YAW RATE SENSOR (AIRBAG SENSOR ASSEMBLY) Click here

    NG

    INSTALL YAW RATE SENSOR (AIRBAG SENSOR ASSEMBLY) CORRECTLY Click here