Nissan Versa (N17): U0140 Lost communication (BCM)

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / U0140 Lost communication (BCM)

DTC Logic

DTC DETECTION LOGIC

DTC Trouble diagnosis name DTC detection condition Possible causes
U0140 Lost Communication With Body Control Module When the ignition switch is ON, TCM is unable to receive the CAN communications signal from BCM continuously for 2 seconds or more.
  • BCM
  • Harness or connector (CAN communication line is open or shorted)

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

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

Is "U0140" detected?

YES >> Go to TM, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

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

U0100 Lost communication (ECM A)

DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0100 Lost Communication With ECM/PCM "A" When the ignition switch ...

U0155 Lost communication (IPC)

DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0155 Lost Communication With Instrument Panel Cluster (IPC) Cont ...

Other materials:

Trunk lid trim
Exploded View 1. Trunk lid assembly 2. Trunk lid finisher Removal and Installation REMOVAL Fully open trunk lid. Remove emergency release handle. Refer to DLK "EMERGENCY LEVER : Removal and Installation". Disconnect the harness connector (A) from the trunk lid lock as ...

Door check link
DOOR CHECK LINK : Removal and Installation REMOVAL Fully close the rear door window. Remove rear door finisher. Refer to INT "Removal and Installation". Remove rear door speaker bolts (if equipped). Disconnect harness connector and remove rear door speaker (if equipped). Rem ...

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