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BRC-68 < DTC/CIRCUIT DIAGNOSIS > [VDC/TCS/ABS] C1143 STEERING ANGLE SENSOR C1143 STEERING ANGLE SENSOR Description INFOID:0000000009718289 The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel, DTC Logic INFOID:0000000009718290 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PRECONDITIONING If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the ignition switch OFF >> GO TO 2. 2. DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch OFF to ON. 2. Perform self-diagnosis for “ABS” with CONSULT. Is DTC “C1143” detected? YES >> Proceed to diagnosis procedure. Refer to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000009718291 1. CHECK WHEEL ALIGNMENT Check the wheel alignment. Refer to (rear). Is the inspection result normal? YES >> GO TO 2. NO >> Adjust wheel alignment. Refer to (rear). 2. CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect ABS actuator and electric unit (control unit) harness connector. 3. Disconnect steering angle sensor harness connector. 4. Check the terminal for deformation, disconnection, looseness, etc. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace error-detected parts. 3. CHECK STEERING ANGLE SENSOR POWER SUPPLY 1. Check the voltage between steering angle sensor harness connector and ground. 2. Turn the ignition switch ON. DTC Display item Malfunction detected condition Possible cause C1143 ST ANG SEN CIRCUIT Neutral position of steering angle sensor is dislocated, • Harness or connector (control unit) • Wheel alignment Steering angle sensor — Voltage (Approx.) Connector Terminal M30 4 Ground 0 V |