C1145

C1113, C1145, C1146 YAW RATE/SIDE/DECEL G SENSOR





Description
Yaw rate/side/decel G sensor detects yaw rate/side/decel G affecting the vehicle, and transmits the data to the
ABS actuator and electric unit (control unit) as an analog voltage signal.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis for "ABS" with CONSULT-III.





Is above displayed on the self-diagnosis display?
YES - Proceed to diagnosis procedure. BRC.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect yaw rate/side/decel G sensor connector.
4. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
5. Reconnect connectors and then perform self-diagnosis for "ABS" with CONSULT-III.
Is any item indicated on the self-diagnosis display?
YES - GO TO 2.
NO - Poor connection of connector terminal. Replace or repair connector.
2.CHECK YAW RATE/SIDE/DECEL G SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect yaw rate/side/decel G sensor connector.
4. Check continuity between yaw rate/side/decel G sensor harness connector terminals and ABS actuator and electric unit (control unit) harness connector terminals.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace malfunctioning components.
3.CHECK YAW RATE/SIDE/DECEL G SENSOR HARNESS CONNECTOR
Check continuity between G sensor harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace malfunctioning components.
4.CHECK YAW RATE/SIDE/DECEL G SENSOR 1
1. Connect yaw rate/side/decel G sensor connector.
2. Connect ABS actuator and electric unit (control unit) connector.
3. Turn ignition switch ON.





4. Move yaw rate/side/decel G sensor as shown in the figure to check the output of before and after moving the sensor with the "ABS", "DATA MONITOR" and "DECEL G-SEN" in order with
CONSULT-III.





Is the inspection result normal?
YES - Replace yaw rate/side/decel G sensor.
NO - GO TO 5.
5.CHECK YAW RATE/SIDE/DECEL G SENSOR 2
1. Turn ignition switch OFF.
2. Connect following terminals between yaw rate/side/decel G sensor and connector.





3. Turn ignition switch ON.
4. Check voltage between yaw rate/side/decel G sensor harness connector terminals.

CAUTION:
Never short out the terminals while measuring voltages.





Is the inspection result normal?
YES - Replace ABS actuator end electric unit (control unit). Perform self-diagnosis for "ABS" with CONSULT-III.
NO - Replace yaw rate/side/decel G sensor. Perform self-diagnosis for "ABS" with CONSULT-III.




Component Inspection
1.CHECK DATA MONITOR
Select "ABS", "DATA MONITOR" and "YAW RATE SENSOR", "SIDE G-SENSOR" and/or "DECEL G-SEN" in order with CONSULT-III, and check yaw rate/side/decel G sensor signal.













Is the inspection result normal?
YES - INSPECTION END
NO - Go to diagnosis procedure. BRC.




Special Repair Requirement
1.ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actuator and electric unit (control unit) or steering angle sensor and removing steering angle sensor. Special Repair Requirement.
- END