C1143

C1143 STEERING ANGLE SENSOR

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. CHECK DTC DETECTION

With CONSULT
1.Turn the ignition switch OFF to ON.
2.Perform self-diagnosis for "ABS".
Is DTC "C1143" detected?
YES- Proceed to diagnosis procedure. Refer to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK STEERING ANGLE SENSOR MOUNTING CONDITION

Check steering angle sensor mounting condition. Refer to "Exploded View" Exploded View.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace error-detected parts.

2. CHECK STEERING ANGLE SENSOR POWER SUPPLY

1.Turn the ignition switch OFF.
2.Disconnect steering angle sensor harness connector.
3.Check voltage between steering angle sensor harness connector and ground.





4.Turn the ignition switch ON.

CAUTION:
Never start engine.
5.Check voltage between steering angle sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- GO TO 3.

3. CHECK STEERING ANGLE SENSOR POWER SUPPLY CIRCUIT

1.Turn the ignition switch OFF.
2.Check 10A fuse (#3).
3.Disconnect fuse block (J/B) harness connector.
4.Check continuity between steering angle sensor harness connector and fuse block (J/B) harness connector.





5.Check continuity between steering angle sensor harness connector and ground.





Is the inspection result normal?
YES- Perform trouble diagnosis for ignition power supply. Refer to "Wiring Diagram IGNITION POWER SUPPLY -" Ignition Power Supply.
NO- Repair or replace error-detected parts.

4. CHECK STEERING ANGLE SENSOR GROUND CIRCUIT

1.Turn the ignition switch OFF.
2.Check continuity between steering angle sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace error-detected parts.

5. CHECK TERMINAL

- Check steering angle sensor pin terminals for damage or loose connection with harness connector.
- Check fuse block (J/B) pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace error-detected parts.

6. CHECK CAN COMMUNICATION LINE

Check "STRG BRANCH LINE CIRCUIT". Refer to "Diagnosis Procedure" CAN.
Is the inspection result normal?
YES- Replace ABS actuator and electric unit (control unit). Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace error-detected parts. Refer to "Precaution for Harness Repair" Precaution For Harness Repair VDC.