C1144

C1143, C1144 STEERING ANGLE SENSOR

Description

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


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. CHECK SELF DIAGNOSTIC RESULT

With CONSULT.
1.Turn the ignition switch OFF to ON.
2.Perform self diagnostic result.
Is DTC C1143 or C1144 detected?
YES- Proceed to diagnosis procedure. Refer to "Diagnosis Procedure".
NO- Inspection End.


Diagnosis Procedure

Regarding Wiring Diagram information, Coupe or VDC/TCS/ABS.

1. CONNECTOR INSPECTION

1.Turn ignition switch OFF.
2.Disconnect ABS actuator and electric unit (control unit) connector.
3.Check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminals.
4.Reconnect connector and perform self-diagnosis. VDC/TCS/ABS.
Is the inspection result normal?
YES- Inspection End.
NO- GO TO 2

2. CHECK STEERING ANGLE SENSOR HARNESS

1.Check CAN communication system. Trouble Diagnosis Flow Chart.
2.Turn ignition switch OFF.
3.Disconnect steering angle sensor connector.
4.Check continuity between steering angle sensor connector M53 terminal 1 and ground.





5.Turn ignition switch ON.
6.Check voltage between steering angle sensor connector M53 terminal 4 and ground.





Is the inspection result normal?
YES- GO TO 3
NO- Repair or replace malfunctioning components.

3. CHECK DATA MONITOR

1.Turn ignition switch OFF.
2.Connect the steering angle sensor and ABS actuator and electric unit (control unit) connectors.
3.Perform the steering angle sensor component inspection. Refer to "Component Inspection".
Is the inspection result normal?
YES- Replace ABS actuator and electric unit (control unit). VDC/TCS/ABS.
NO- Replace steering angle sensor. Service and Repair.


Component Inspection


1. CHECK DATA MONITOR

Select "STR ANGLE 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). Service and Repair.
- END