DTC    C1234/34    Yaw Rate Sensor Malfunction

DTC    C1243/43    Acceleration Sensor Stuck Malfunction

DTC    C1244/44    Open or Short in Deceleration Sensor Circuit

DTC    C1245/45    Acceleration Sensor Output Malfunction

DTC    C1279/79    Deceleration Sensor Output Voltage Malfunction (Test Mode DTC)

for Preparation Click here


DESCRIPTION

The yaw rate and deceleration sensor detect any gravity applied to the vehicle and transmit the signal to the skid control ECU via CAN communication system (vehicle equipped with Enhanced VSC).
The deceleration sensor is built into the yaw rate and deceleration sensor and detects the vehicle condition in the 2 systems (GL1, GL2).
When a malfunction occurs in the communication line with the yaw rate sensor, DTC U0123/62 (yaw rate sensor communication malfunction) and DTC U0124/95 (deceleration sensor communication malfunction) are output.
DTCs C0371/71 and C1279/79 can be deleted when the yaw rate and acceleration sensor sends a yaw rate and/or acceleration signal or the Test Mode ends. DTCs C0371/71 and C1279/79 are output only in the Test Mode.

DTC No.
INF Code
DTC Detecting Condition
Trouble Area
C1234/34
331
332
333
334
335
337
Malfunction signal that is detected at sensor self-check is received when communication with the sensors is valid.
Yaw rate and deceleration sensor
C1243/43
317
Sensor sticking can be seen 16 times or more in a series at a speed between 18 mph (30 km/h) and 0 mph (0 km/h).
Yaw rate and deceleration sensor
C1244/44
314
Difference between GL1 and GL2 is not less than 0.4 G for at least 60 sec. after the difference is 0.6 G or more when the vehicle speed is 0 mph (0 km/h).
Malfunction signal from deceleration sensor is received.
  1. Yaw rate and deceleration sensor
  2. Yaw rate and deceleration sensor installation
C1245/45
313
Difference between the G value calculated from deceleration sensor value and vehicle speed exceeds 0.35 G for at least 60 sec. when vehicle speed is 18 mph (30 km/h).
  1. Yaw rate and deceleration sensor
  2. Yaw rate and deceleration sensor installation

WIRING DIAGRAM


INSPECTION PROCEDURE

1.CHECK YAW RATE AND DECELERATION SENSOR INSTALLATION

  1. Check that the yaw rate and deceleration sensor has been installed properly.

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



NG
INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY
OK


2.REPLACE YAW RATE AND DECELERATION SENSOR

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


NEXT

PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR