Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

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-DIAGNOSIS (1)
CONSULT
1. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
2. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
3. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1143" detected?

YES

"C1143" is displayed as "CRNT": GO TO 3 .

YES

"C1143" is displayed as "PAST": Inspection End. (Erase "Self Diagnostic Result"of "ABS".)

NO

Inspection End.
CHECK CONNECTOR
1. Turn the 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?

YES

GO TO 5 .

NO

Repair / replace harness or connector and securely lock the connector. GO TO 4 .
PERFORM SELF-DIAGNOSIS (2)
CONSULT
1. Turn the ignition switch OFF.
  NOTE: Wait at least 10 seconds after turning ignition switch OFF.
2. Start the engine.
  NOTE: Wait at least 10 seconds after starting the engine.
3. Select "Self Diagnostic Result" mode of "ABS".
Is DTC "C1143" detected?

YES

GO TO 5 .

NO

Inspection End.

CHECK STEERING ANGLE SENSOR POWER SUPPLY

Turn the ignition switch OFF.
Disconnect steering angle sensor harness connector.

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

Steering angle sensor

Voltage

(Approx.)

Connector

Terminal

M53

Ground

0 V

Turn the ignition switch ON.
NOTE: Start the engine.

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

Steering angle sensor

Voltage

(Approx.)

Connector

Terminal

M53

Ground

Battery voltage

Is the inspection result normal?

YES

GO TO 7 .

GO TO 6 .

CHECK STEERING ANGLE SENSOR POWER SUPPLY CIRCUIT

Turn the ignition switch OFF.
Check fuse 46 (10A).
Disconnect IPDM E/R harness connector.

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	Continuity
M53	4	E19	19	Yes

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

Steering angle sensor		-	Continuity
Connector	Terminal
M53	4	Ground	No

Is the inspection result normal?

YES

Perform trouble diagnosis for ignition power supply.

Repair / replace harness, connector, or fuse.

CHECK STEERING ANGLE SENSOR GROUND CIRCUIT

Turn the ignition switch OFF.

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

Steering angle sensor		-	Continuity
Connector	Terminal
M53	1	Ground	Yes

Is the inspection result normal?

YES

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 circuits. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

GO TO 9 .

NO

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?

YES

GO TO 10 .

NO

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?

YES

GO TO 11 .

NO

Repair / replace harness or connector.
CHECK DATA MONITOR
CONSULT
1. Select "Data Monitor" mode of "ABS" and check "STR ANGLE SIG".
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?

YES

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

NO

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