Nissan Versa (N17): U0100 Lost communication (ECM A)

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / 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 is ON, TCM is unable to receive the CAN communications signal from ECM continuously for 2 seconds or more.
  • ECM
  • 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 the 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 "U0100" detected?

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

NO >> INSPECTION END

Diagnosis Procedure

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

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Other materials:

Control panel buttons - color screen with Navigation System (if so equipped)
WARNING Positioning of the heating or air conditioning controls and display controls should not be done while driving in order that full attention may be given to the driving operation. Do not disassemble or modify this system. If you do, it may result in accidents, fire, or elec ...

U0100 Lost communication (ECM A)
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 excellent malfunction detection ability. Many electronic control units are equipped onto a vehicle, an ...

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