DTC    C1210/36    Zero Point Calibration of Yaw Rate Sensor Undone

DTC    C1336/98    Zero Point Calibration of Acceleration Sensor Undone

for Preparation Click here


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 are any problems in the bus lines between the yaw rate and acceleration sensor 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 output.
The DTCs will be also output when the calibration has not been completed.

DTC Code
INF Code
DTC Detection Condition
Trouble Area
C1210/36
-
Yaw rate sensor zero point calibration is incomplete.
  1. Zero point calibration undone
  2. Yaw rate and acceleration sensor
  3. Brake booster with master cylinder (Skid control ECU)
(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.
  1. Zero point calibration undone
  2. Yaw rate and acceleration sensor
  3. Brake booster with master cylinder (Skid control ECU)
(Perform zero point calibration and check for DTCs. If no DTCs are output again, the sensor is normal.)

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the brake booster with master cylinder (skid control ECU), perform initialization and calibration of the linear solenoid valve (Click here).
  2. When replacing the yaw rate and acceleration sensor, perform zero point calibration (Click here).

HINT:
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).

1.PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR

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


NEXT


2.RECONFIRM DTC

  1. Turn the power switch off.

  1. Clear the DTCs (Click here).

  1. Turn the power switch on (READY).

  1. 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.

  1. Check if the same DTC is recorded (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

    HINT:
    1. The DTCs are recorded because zero point calibration has not been completed.
    2. End the procedure because the same DTCs are not recorded after completion of zero point calibration.



B
END
A


3.CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

  1. Turn the power switch off.

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

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



NG
INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY (Click here)
OK


4.REPLACE YAW RATE AND ACCELERATION SENSOR

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

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


NEXT


5.RECONFIRM DTC

  1. Clear the DTCs (Click here).

  1. Turn the power switch on (READY).

  1. 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.

  1. Check if the same DTC is recorded (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



B
REPLACE BRAKE BOOSTER WITH MASTER CYLINDER (Click here)

C
END
A

REPLACE BRAKE BOOSTER WITH MASTER CYLINDER (Click here)