Nissan Murano: Dtc/circuit Diagnosis / C1143 Steering Angle Sensor

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

NOTE:

Confirm if DTC is PAST or CRNT. If DTC is CRNT, proceed with Diagnosis Procedure. If DTC is PAST, clear DTC. Do not replace the ABS actuator and electric unit (control unit) for a PAST DTC.

FAIL-SAFE

The following functions are suspended:

• VDC function

• TCS function

• Hill start assist function

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always ignition switch OFF and wait at least 10 seconds before conducting the next test.

GO TO 2.

CHECK DTC DETECTION

CONSULT

1. Ignition switch OFF.

   NOTE:

   Wait at least 10 seconds after ignition switch OFF.

2. Start the engine.

   NOTE:

   Wait at least 10 seconds after start the engine.

3. Select “Self Diagnostic Result” mode of “ABS”.

Is DTC “C1143” detected?

“CRNT” is displayed: Proceed to DTC Diagnosis Procedure.

“PAST” is displayed: Inspection End (Erase the memory of “Self Diagnostic Result” mode of “ABS”.)

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: Inspection End.

ADJUST THE NEUTRAL POSITION OF STEERING ANGLE SENSOR

CONSULT

Perform neutral position adjustment of steering angle sensor. Refer to Description.

GO TO 2.

PERFORM SELF DIAGNOSTIC RESULT (1)

CONSULT

1. Ignition switch OFF.

   NOTE:

   Wait at least 10 seconds after ignition switch OFF.

2. Start the engine.

   NOTE:

   Wait at least 10 seconds after start the engine.

3. Select “Self Diagnostic Result” mode of “ABS”.

Is DTC “C1143” detected?

“CRNT” is displayed: GO TO 3.

“PAST” is displayed: Inspection End (Erase the memory of “Self Diagnostic Result” mode of “ABS”.)

Inspection End.

CHECK CONNECTOR

1. Ignition switch OFF.

2. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.

3. Check the steering angle sensor harness connector for disconnection or looseness.

Is the inspection result normal?

GO TO 5.

Repair / replace harness or connector, securely lock the connector, and GO TO 4.

PERFORM SELF DIAGNOSTIC RESULT (2)

CONSULT

1. Ignition switch OFF.

   NOTE:

   Wait at least 10 seconds after ignition switch OFF.

2. Start the engine.

   NOTE:

   Wait at least 10 seconds after start the engine.

3. Select “Self Diagnostic Result” mode of “ABS”.

Is DTC “C1143” detected?

GO TO 5.

Inspection End.

CHECK STEERING ANGLE SENSOR POWER SUPPLY

1. Ignition switch OFF.

2. Disconnect steering angle sensor harness connector.

3. Check the voltage between steering angle sensor harness connector and ground.

   Steering angle sensor		—	Voltage (Approx.)
   Connector	Terminal
   M54	4	Ground	0 V

4. Ignition switch ON.

   NOTE:

   Start the engine.

5. Check the voltage between steering angle sensor harness connector and ground.

   Steering angle sensor		—	Voltage (Approx.)
   Connector	Terminal
   M54	4	Ground	Battery voltage

Is the inspection result normal?

GO TO 7.

GO TO 6.

CHECK STEERING ANGLE SENSOR POWER SUPPLY CIRCUIT

1. Ignition switch OFF.

2. Check the 10A fuse (#46).

3. Disconnect IPDM E/R harness connector.

4. Check the continuity between steering angle sensor harness connector and IPDM E/R harness connector.

   Steering angle sensor		IPDM E/R		Continuity
   Connector	Terminal	Connector	Terminal
   M54	4	E119	35	Yes

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

   Steering angle sensor		—	Continuity
   Connector	Terminal
   M54	4	Ground	No

Is the inspection result normal?

Perform trouble diagnosis for ignition power supply.

Repair / replace harness, connector, or fuse.

CHECK STEERING ANGLE SENSOR GROUND CIRCUIT

1. Ignition switch OFF.

2. Check the continuity between steering angle sensor harness connector and ground.

   Steering angle sensor		—	Continuity
   Connector	Terminal
   M54	1	Ground	Yes

Is the inspection result normal?

GO TO 8.

Repair / replace harness or connector.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY AND GROUND CIRCUIT

Check the ABS actuator and electric unit (control unit) power supply and ground circuit. Refer to Diagnosis Procedure.

Is the inspection result normal?

GO TO 9.

Repair / replace harness, connector, fuse, or fusible link.

CHECK TERMINAL

1. Check the steering angle sensor pin terminals for damage or loose connection with harness connector.

2. Check the IPDM E/R pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

GO TO 10.

Repair / replace harness, connector, or terminal.

CHECK CAN COMMUNICATION LINE

Check the CAN communication line. Refer to Trouble Diagnosis Flow Chart.

Is the inspection result normal?

GO TO 11.

Repair / replace harness or connector. Refer to Precautions for Harness Repair.

CHECK DATA MONITOR

CONSULT

1. Select “STR ANGLE SIG” in “Data Monitor” mode of “ABS”.

2. Check that the indication changes with the steering angle when the steering wheel is turned left/right from the neutral position. Refer to Values on the Diagnosis Tool.

Is the inspection result normal?

Replace the ABS actuator and electric unit (control unit). Refer to Removal and Installation.

Replace the steering angle sensor. Refer to Removal and Installation.