DTC    C1210    Zero Point Calibration of Yaw Rate Sensor Undone

DTC    C1336    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 is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, the DTCs U0123 (yaw rate sensor communication trouble) and U0124 (acceleration sensor communication trouble) are output.
The DTCs are also output when the calibration has not been completed.

DTC Code
DTC Detection Condition
Trouble Area
C1210
Zero point calibration of yaw rate sensor undone.
  1. Yaw rate and acceleration sensor
  2. Brake actuator assembly (Skid control ECU)
C1336
Zero point calibration of acceleration sensor undone.
  1. Yaw rate and acceleration sensor
  2. Brake actuator assembly (Skid control ECU)

INSPECTION PROCEDURE

NOTICE:
  1. When replacing the yaw rate and deceleration sensor, perform the following procedures:
    For the VSC system, clear and then reobtain the zero point calibration (Click here).
    For the CVT system, perform "Reset Memory", "Deceleration Sensor 0 Point Calibration", and "CVT Oil Pressure Calibration" (for K41A Click here, for K41B Click here).
  2. When replacing the brake actuator assembly, perform zero point calibration (Click here).

HINT:
When U0123, U0124 and/or U0126 is output along with C1210 and/or C1336, inspect and repair trouble areas indicated by U0123, U0124 and/or U0126 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.PERFORM TEST MODE (SIGNAL CHECK)

  1. Turn the ignition switch off.

  1. Perform the sensor check in the Test Mode procedure (Click here).

    OK:
    All Test Mode DTCs are cleared.

    HINT:
    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
Go to step 3
OK

END 

3.CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION

  1. Turn the ignition switch off.

  1. 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 is not installed in a tilted position.



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


4.READ VALUE USING INTELLIGENT TESTER (YAW RATE AND ACCELERATION SENSOR)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

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

    ABS/VSC/TRC (Skid Control ECU) 
    Tester Display
    		Measurement
    Item/Range
    		Normal Condition
    		Diagnostic Note
    Deceleration Sensor
    		Acceleration sensor/
    min.: -17.4 m/s2,
    max.: 17.4 m/s2
    		Min.: -17.4 m/s2
    Max.: 17.4 m/s2
    		Reading changes when vehicle is bounced
    Deceleration Sensor2
    		Acceleration sensor 2/
    min.: -17.4 m/s2,
    max.: 17.4 m/s2
    		Min.: -17.4 m/s2
    Max.: 17.4 m/s2
    		Reading changes when vehicle is bounced
    Yaw Rate Sensor
    		Yaw rate sensor/
    min.: -100 deg/s,
    max.: 100 deg/s
    		Vehicle stationary: 0 deg/s
    Right turn: -100 to 0 deg/s
    Left turn: 0 to 100 deg/s
    		-

  1. Check the yaw rate and acceleration sensor output value displayed on the intelligent tester.

    OK:
    The yaw rate and acceleration sensor output value is normal.

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

HINT:
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
REPLACE YAW RATE AND ACCELERATION SENSOR (Click here)
OK

REPLACE BRAKE ACTUATOR ASSEMBLY (Click here)