VEHICLE STABILITY CONTROL SYSTEM(for TMC Made), Diagnostic DTC:C1436

DTC Code DTC Name
C1436 Yaw Rate Sensor Malfunction

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 (airbag sensor assembly) 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, DTCs U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.

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

DTC No. DTC Detection Condition Trouble Area
C1436

Either of the following is detected:


  1. With the vehicle stationary, the yaw rate and deceleration sensor output value is not 0 deg/s.

  2. Abnormal comparison value.

 Yaw rate sensor (Airbag sensor assembly)

WIRING DIAGRAM

Refer to DTCs C1232, C1243 and C1245 Click here.

CAUTION / NOTICE / HINT

Note


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

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

Tech Tips

When U0124 and/or U0126 is output together with C1436, inspect and repair the trouble areas indicated by U0124 and/or U0126 first Click here.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (YAW RATE SENSOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

    5. According to the display on the tester, read the Data List.

      ABS/VSC/TRC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Yaw Rate Sensor Yaw rate sensor/min.: -128 °/s, max.: 127 °/s

      Vehicle stationary: 0 °/s

      Right turn: -128 to 0 °/s

      Left turn: 0 to 127 °/s

      		 -

    6. Check that the yaw rate sensor (airbag sensor assembly) output value displayed on the intelligent tester.

      Result
      Result Proceed to
      NG (The yaw rate sensor (airbag sensor assembly) output value is 0 deg/s when the vehicle is stationary, but the value fluctuates when turning) A
      NG (The yaw rate sensor (airbag sensor assembly) output value is not 0 deg/s when the vehicle is stationary) B
      OK C

      Note

      Check the yaw rate sensor (airbag sensor assembly) signal after replacement Click here.

      Tech Tips

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


    B

    REPLACE YAW RATE SENSOR (AIRBAG SENSOR ASSEMBLY) Click here

    C

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here

    A

  2. 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 installed in a tilted position.

      Note

      Check the yaw rate sensor (airbag sensor assembly) signal after replacement Click here.

      Tech Tips

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


    OK

    REPLACE YAW RATE SENSOR (AIRBAG SENSOR ASSEMBLY) Click here

    NG

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