Nissan Rogue Service Manual: U0073 communication bus a OFF

Nissan Rogue Service Manual / Transmission & driveline / Transaxle & Transmission / Dtc/circuit diagnosis / U0073 communication bus a OFF

DTC Description

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
U0073	COMM BUS A OFF (Control Module Communication Bus A Off)	TCM communication blockage lasts for 2 seconds or more when turning ON the ignition switch. (Communication not established.)

POSSIBLE CAUSE

Harness or connector (CAN communication line is error)

FAIL-SAFE

Selector shock is large
Start is slow
Acceleration is slow
Lock-up is not performed

DTC CONFIRMATION PROCEDURE

1.PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

Start the engine and wait for at least 5 seconds.
Check the DTC.

Is “U0073” detected? YES >> Go to TM-95, "Diagnosis Procedure".

NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

For the diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Flow Chart".

Dtc/circuit diagnosis

...

U0100 lost communication (ECM A)

DTC Description DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition U0100 LOST COMM (ECM A) (Lost Communication With ECM/P ...

Other materials:

Seat belt warning system
Seat Belt Warning System Does Not Function 1.SEAT BELT WARNING LIGHT Turn ignition switch ON. Does the seat belt warning lamp come ON? YES >> GO TO 2. NO >> Check 10A fuse [No. 13, located in the fuse block (J/B)]. Check seat belt buckle switch (driver seat). ...

Both doors mirror defogger don’t operate but rear window defogger operates
Diagnosis Procedure Regarding Wiring Diagram information, refer to DEF-12, "Wiring Diagram". 1. CHECK DOOR MIRROR DEFOGGER FUSE Check if the following fuse in fuse block (J/B) is blown. Is the inspection result normal? YES >> GO TO 2. NO >> Replace the blown fuse af ...

Air bag diagnosis sensor unit
Exploded View Diagnosis sensor unit Front Removal and Installation WARNING: Before servicing the SRS, turn ignition switch OFF, disconnect both battery terminals then wait at least three minutes. Before disconnecting the air bag diagnosis sensor unit harness ...