Nissan Rogue Service Manual: U1040 ENG comm circuit

Nissan Rogue Service Manual / Engine / Engine Control System / DTC/Circuit diagnosis / U1040 ENG comm circuit

DTC Description

DTC DETECTION LOGIC

DTC No.	CONSULT screen terms (Trouble diagnosis content)	DTC detecting condition
U1040	ENG COMM CIRCUIT (Engine communication circuit)	ECM cannot transmit a communication signal to generator.

POSSIBLE CAUSE

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

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.

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

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

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

Is DTC detected? YES >> Proceed to EC-171, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK LIN COMMUNICATION CIRCUIT

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

Check lin communication circuit

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

Replace generator. Refer to CHG-20, "Removal and Installation".
Erase DTC.
Perform DTC confirmation procedure again. Refer to EC-171, "DTC Description".

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

NO >> INSPECTION END

U1001 CAN comm circuit

Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...

U1044 ENG comm circuit

DTC Description DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition U1044 ENG COMM CIRCUIT (Engine communication circu ...

Other materials:

NISSAN Intelligent Key® Operation
NISSAN Intelligent Key® Operation You can lock or unlock the doors without taking the Intelligent Key out of your pocket or bag. When you carry the Intelligent Key with you, you can lock or unlock all doors by pushing the door handle request switch within the range of operation. Loc ...

B0098 front door satellite sensor RH
DTC Logic DTC DETECTION LOGIC With CONSULT CONSULT name DTC DTC detecting condition Repair order DOOR SATELLITE SENSOR RH [SENSOR FAIL] B0098 Front door satellite sensor RH has malfunctioned. Refer to SRC-72, "Diagnosis Procedure". ...

Removal and installation
AWD CONTROL UNIT Exploded View 1 AWD control unit : Vehicle front : N·m (kg-m, in-lb) Removal and Installation REMOVAL Remove luggage side lower finisher (LH). Refer to INT-33, "Exploded View". Disconnect AWD control unit harness connector. Remove AWD ...