C1144
016C1143, C1144 STEERING ANGLE SENSORDescription
The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel, and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication.
DTC Logic
C1143-C1144:
DTC CONFIRMATION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> Proceed to diagnosis procedure. Refer to "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E26, check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
2. Reconnect connector and perform self-diagnosis.
Is the inspection result normal?
YES >> Inspection end.
NO >> GO TO 2
2. CHECK STEERING ANGLE SENSOR HARNESS
1. Check CAN communication system. Refer to LAN-16, "Trouble Diagnosis Flow Chart". Diagnosis and Repair Workflow
2. Turn ignition switch OFF and disconnect steering angle sensor connector.
3. Check continuity between steering angle sensor harness connector M53 terminal 1 and ground.
4. Turn ignition switch ON and check voltage between steering angle sensor harness connector M53 terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> ^ Repair or replace malfunctioning components.
^ Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".
3. CHECK DATA MONITOR
1. Turn ignition switch OFF and connect the steering angle sensor connector and ABS actuator and electric unit (control unit) connector.
2. Select "STR ANGLE SIG" in "Data Monitor" and check steering angle sensor signal.
Is the inspection result normal?
YES >> Perform self-diagnosis.
NO >> ^ Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sensor.
^ Perform the self-diagnosis, and make sure that the result shows "NO DTC IS DETECTED".
Component Inspection
1. CHECK DATA MONITOR
Select "STRANGLE SIG" in "DATA MONITOR" and check steering angle sensor signal.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to diagnosis procedure. Refer to "Diagnosis Procedure".
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).
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