ABS

C1105, C1106, C1107, C1108 WHEEL SENSOR





Description
ABS unit continually monitors wheel speed sensors to detect abnormal signals.




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. ABS.
NO - INSPECTION END




Diagnosis Procedure

CAUTION:
Never check between wheel sensor terminals.
1.CHECK TIRES
Check air pressure, wear and size.
Are air pressure, wear and size within standard?
YES - GO TO 2.
NO - Adjust air pressure, or replace tire.
2.CHECK SENSOR AND SENSOR ROTOR
- Check that there is no damage or adherence of foreign matter on the sensor rotor surface.
- Check sensor rotor for damage.
- Check wheel sensor for damage, disconnection or looseness.
- Check that there is no deformation on the wheel sensor mounting surface.
Are the sensor and sensor rotor normal?
YES - GO TO 3.
NO - Repair wheel sensor mount or replace sensor rotor. Then perform self-diagnosis for "ABS" with
CONSULT-III.
3.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect malfunctioning wheel sensor connector.
4. Check terminal to see if it is deformed, disconnected, loose, etc., Repair or replace it if any malfunction condition is found.
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 4.
NO - Poor connection of connector terminal. Repair or replace connector.
4.CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect ABS actuator and electric unit (control unit) connector.
3. Disconnect malfunctioning wheel sensor connector.
4. Check continuity between terminals. (Also check continuity when steering wheel is turned right and left and when sensor harness inside the wheel house is moved.)














5. Reconnect ABS actuator and electric unit (control unit) connector.
Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace malfunctioning components.
5.REPLACE WHEEL SENSOR
1. Replace wheel sensor.
2. Erase self-diagnosis results for "ABS" with CONSULT-III.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON.

CAUTION:
Never start engine.
5. Perform self-diagnosis for "ABS" with CONSULT-III.
Is DTC "C1105", "C1106", "C1107" or "C1108" detected?
YES - Replace ABS actuator and electric unit (control unit).
NO - INSPECTION END




Component Inspection
1.CHECK DATA MONITOR
Select "ABS", "DATA MONITOR" in order with CONSULT-III, select "FR LH SENSOR", "FR RH SENSOR", "RR LH SENSOR" and "RR RH SENSOR", and check the vehicle speed.






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