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ELECTRONICALLY CONTROLLED BRAKE SYSTEM, Diagnostic DTC:C1210/36, C1336/98

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DTC Code DTC Name
C1210/36 Zero Point Calibration of Yaw Rate Sensor Undone
C1336/98 Zero Point Calibration of Acceleration Sensor Undone
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DESCRIPTION

The skid control ECU (brake booster with master cylinder assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system.

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

If there are any problems in the bus lines between the yaw rate and acceleration sensor (airbag sensor assembly) and the CAN communication system, DTCs U0123/62 (Lost Communication with Yaw Rate Sensor Module) and U0124/95 (Lost Communication with Lateral Acceleration Sensor Module) will be stored.

These DTCs (C1210/36 and C1336/98) will also be stored when zero point calibration has not been completed.

DTC No. INF Code DTC Detection Condition Trouble Area
C1210/36 - Yaw rate sensor zero point calibration is incomplete.

  • Zero point calibration undone

  • Yaw rate and acceleration sensor (Airbag sensor assembly)

  • Skid control ECU (Brake booster with master cylinder assembly)

(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)
C1336/98 -

Either of the following is detected:


  1. The vehicle is driven normally without zero point calibration completed.

  2. After completing zero point calibration, zero point voltage of the sensor is not within the range of 2.38 to 2.62 V.

  • Zero point calibration undone

  • Yaw rate and acceleration sensor (Airbag sensor assembly)

  • Skid control ECU (Brake booster with master cylinder assembly)

(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)
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CAUTION / NOTICE / HINT

Note:

  • When replacing the skid control ECU (brake booster with master cylinder assembly), perform initialization and calibration of the linear solenoid valve (Click here).

  • When replacing the yaw rate and acceleration sensor (airbag sensor assembly), perform zero point calibration (Click here).

Tip:

When U0123/62 and/or U0124/95 is output together with C1210/36 and/or C1336/98, inspect and repair trouble areas indicated by U0123/62 and/or U0124/95 first (Click here).

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PROCEDURE


  1. Click here

    PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR


    1. Perform zero point calibration of the yaw rate and acceleration sensor (Click here).


  2. Click here

    RECONFIRM DTC


    1. Turn the power switch off.

    2. Clear the DTCs (Click here).

    3. Turn the power switch on (READY).

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

    5. Check if the same DTC is output (Click here).

      Result
      Result Proceed to
      DTCs C1210/36 and/or C1336/98 are output. A
      DTCs C1210/36 and C1336/98 are not output. B
      Tip:

      • These DTCs are recorded because zero point calibration has not been completed.

      • End the procedure if the same DTCs are not recorded after completion of zero point calibration.


  3. Click here

    CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION


    1. Turn the power switch off.

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

      OK
      The sensor is tightened to the specified torque.
      The sensor is not tilted.

  4. Click here

    REPLACE AIRBAG SENSOR ASSEMBLY


    1. Replace the yaw rate and acceleration sensor (airbag sensor assembly) (Click here).

      Note:

      Check the yaw rate and acceleration sensor signal after replacement (Click here).


  5. Click here

    RECONFIRM DTC


    1. Clear the DTCs (Click here).

    2. Turn the power switch on (READY).

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

    4. Check if the same DTC is output (Click here).

      Result
      Result Proceed to
      DTCs C1210/36 and/or C1336/98 are output (for LHD). A
      DTCs C1210/36 and/or C1336/98 are output (for RHD). B
      DTCs C1210/36 and C1336/98 are not output. C

    • A

      REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (Click here)

    • B

      REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY (Click here)

    • C

      END