C1104

C1101, C1102, C1103, C1104 WHEEL SENSOR





Description
When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit).




DTC Logic

DTC DETECTION LOGIC

DTC DETECTION LOGIC:

DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
1. Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC "C1101", "C1102", "C1103" or "C1104" detected?
YES - Proceed to diagnosis. Refer to C1101.
NO - INSPECTION END




Diagnosis Procedure

CAUTION:
Do not check between wheel sensor terminals.
1.CHECK TIRES
Check air pressure, wear and size. Refer to [1][2]Pressure, Vacuum and Temperature Specifications.
Is the inspection result normal?
YES - GO TO 2.
NO - Repair or replace damaged parts.
2.CHECK SENSOR AND SENSOR ROTOR
- Check sensor rotor for damage.
- Check wheel sensor for damage, disconnection or looseness.
Is the inspection result normal?
YES - GO TO 3.
NO - Repair wheel sensor mount or replace sensor rotor. Then perform the self-diagnosis.
3.CHECK CONNECTOR
1. Turn the 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, looseness, etc.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.CHECK WHEEL SENSOR HARNESS
1. Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel sensor harness connector. (Also check continuity when steering wheel is turned right and left and when sensor harness inside the wheel house is moved.)








2. Check the continuity between ABS actuator and electric unit (control unit) harness connector.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace damaged parts.
5.REPLACE WHEEL SENSOR
1. Replace wheel sensor.
2. Erase ABS actuator and electric unit (control unit) self-diagnosis results.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON.

CAUTION:
Never start the engine.
5. Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC "C1101", "C1102", "C1103" or "C1104" detected?
YES - Replace ABS actuator and electric unit (control unit).
NO - INSPECTION END




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). Refer to Description.
- END