VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C0365/28, C1234/34, C1245/32, C1245/45

DTC Code DTC Name
C0365/28 Malfunction in Deceleration Sensor
C1234/34 Yaw Rate Sensor Malfunction
C1245/32 Acceleration Sensor Output Malfunction
C1245/45 Acceleration Sensor Output 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.

If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, DTC U0123/62 (Lost Communication with Yaw Rate Sensor Module) is output.

DTC Code DTC Detection Condition Trouble Area
C0365/28

Any of the following is detected:


  1. Lateral acceleration difference between sensor signal and reference value is large.

  2. Offset value of sensor signal is higher than the standard value.

  3. Sensor signal is out of range (2.25 m/s2).

  • Yaw rate and acceleration sensor

  • Yaw rate and acceleration sensor circuit

  • Sensor installation

  • Brake actuator assembly (Skid control ECU)
C1234/34 Sensor malfunction signal is received from the yaw rate sensor.

  • Yaw rate and acceleration sensor

  • Yaw rate and acceleration sensor circuit
C1245/32*1

Any of the following is detected:


  1. Lateral acceleration difference between sensor signal and reference value is large.

  2. Offset value of sensor signal is higher than the standard value.

  3. Sensor signal is out of range (10 m/s2continues for 20 seconds).

  • Sensor installation

  • Yaw rate and acceleration sensor
C1245/45*2

Any of the following is detected:


  1. Lateral acceleration difference between sensor signal and reference value is large.

  2. Offset value of sensor signal is higher than the standard value.

  3. Sensor signal is out of range (10 m/s2continues for 20 seconds).

  • Sensor installation

  • Yaw rate and acceleration sensor

*1: for 2WD

*2: for AWD

WIRING DIAGRAM

A01EK72E37

INSPECTION PROCEDURE

Tech Tips

When U0123/62 and/or U0126/63 is output together with C0365/28, C1234/34, C1245/32 and/or C1245/45 inspect and repair the trouble areas indicated by U0123/62 and/or U0126/63 first Click here.

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs Click here.

    2. Start the engine.

    3. At a speed of 30 km/h (18 mph) or more, drive the vehicle, turn the steering wheel, and decelerate (depress the brake pedal) the vehicle.

    4. Turn the ignition switch to ON again and check that no CAN communication system DTC is output Click here.

      Result
      Result Proceed to
      CAN communication system DTC is not output A
      CAN communication system DTC is output B

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION


    1. Turn the ignition switch off.

    2. Check that the yaw rate and acceleration sensor has been installed properly Click here.

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

    NG

    INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Click here

    OK

  3. INSPECT YAW RATE AND ACCELERATION SENSOR (IGA TERMINAL)


    1. A01EJGZE11
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Yaw Rate and Acceleration Sensor)

      Make sure that there is no looseness at the locking part and the connecting part of the connector.

    2. Disconnect the yaw rate and acceleration sensor connector.

    3. Turn the ignition switch to ON.

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      D30-1 (IGA) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (IGA CIRCUIT)

    OK

  4. INSPECT YAW RATE AND ACCELERATION SENSOR (GNDA TERMINAL)


    1. A01EJGZE12
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Yaw Rate and Acceleration Sensor)

      Turn the ignition switch off.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D30-4 (GNDA) - Body ground Always Below 1 Ω

      Tech Tips

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


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (GNDA CIRCUIT)

    OK

    REPLACE YAW RATE AND ACCELERATION SENSOR Click here