Nissan Rogue Service Manual: U1044 ENG comm circuit

DTC Description

DTC DETECTION LOGIC

POSSIBLE CAUSE

•  Harness or connectors (LIN communication circuit is open or shorted.)
• Generator

FAIL-SAFE

Not applicable

DTC CONFIRMATION PROCEDURE

1.PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted. always perform the following procedure before conducting the next test.

1.  Turn ignition switch OFF and wait at least 10 seconds.
2.  Turn ignition switch ON.
3.  Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

1.  Turn ignition ON and wait at least 10 seconds.
2.  Check DTC.

Is DTC detected? YES >> Proceed to EC-173, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK LIN COMMUNICATION CIRCUIT

1.  Turn ignition switch OFF.
2.  Disconnect ECM harness connector and generator harness connector.
3.  Check the continuity between ECM harness connector and generator harness connector.

4. Also check harness for short to power and short to ground.

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace error-detected parts.

2.REPLACE GENERATOR

1. Replace generator. Refer to CHG-20, "Removal and Installation".
2.  Erase DTC.
3.  Perform DTC confirmation procedure again. Refer to EC-173, "DTC Description".

Is DTC detected again? YES >> Replace ECM. Refer to EC-499, "Removal and Installation".

NO >> INSPECTION END