Open or Short In Deceleration Sensor Circuit

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1234/34: Yaw Rate Sensor Malfunction

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)

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 deceleration 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.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK YAW RATE AND DECELERATION SENSOR INSTALLATION
(a) 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 DECELERATION SENSOR CORRECTLY
OK -- Continue to next step.
2. REPLACE YAW RATE AND DECELERATION SENSOR
(a) Replace the yaw rate and deceleration sensor Components.
NEXT -- PERFORM ZERO POINT CALIBRATION OF YAW RATE AND DECELERATION SENSOR