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BRC-110 < COMPONENT DIAGNOSIS > [VDC/TCS/ABS] C1143 STEERING ANGLE SENSOR C1143 STEERING ANGLE SENSOR Description INFOID:0000000003766958 The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel, DTC Logic INFOID:0000000003766959 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1143” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-110, "Diagnosis Procedure" NO >> INSPECTION END Diagnosis Procedure INFOID:0000000003766960 1. CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect ABS actuator and electric unit (control unit) connector. 3. Disconnect steering angle sensor connector. 4. Check terminal for deformation, disconnection, looseness, etc. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace damaged parts. 2. CHECK STEERING ANGLE SENSOR HARNESS 1. Turn the ignition switch ON. CAUTION: Never start the engine. 2. Check the voltage between steering angle sensor harness connector and ground. 3. Turn the ignition switch OFF. 4. Check the continuity between steering angle sensor harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace damaged parts. DTC Display item Malfunction detected condition Possible cause C1143 ST ANG SEN CIRCUIT Steering angle sensor is malfunctioning. • Harness or connector (control unit) Steering angle sensor — Voltage Connector Terminal M30 4 Ground Battery voltage Steering angle sensor — Continuity Connector Terminal M30 1 Ground Existed |