Nissan Maxima Service and Repair Manual: U0100 lost communication (ECM A)

Nissan Maxima Service and Repair Manual / Transmission & driveline / Transaxle & transmission / DTC/circuit diagnosis / U0100 lost communication (ECM A)

DTC Logic

DTC DETECTION LOGIC

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.

2.PERFORM DTC CONFIRMATION PROCEDURE

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

Diagnosis Procedure

For the diagnosis procedure, refer to LAN-15, "Trouble Diagnosis Flow Chart".

    DTC/circuit diagnosis
    ...

    U1000 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 excelle ...

    Other materials:

    Exhaust gas (carbon monoxide)
    WARNING Do not breathe exhaust gases; they contain colorless and odorless carbon monoxide. Carbon monoxide is dangerous. It can cause unconsciousness or death. If you suspect that exhaust fumes are entering the vehicle, drive with all windows fully open, and have the vehicle in ...

    Unlock sensor
    Description Detects door lock condition of driver door. Component Function Check 1. CHECK FUNCTION With CONSULT Check unlock sensor UNLK SEN−DR in "Data Monitor" mode. Diagnosis Procedure 1. CHECK UNLOCK SENSOR POWER SUPPLY Check signal between BCM connector and ground with o ...

    Audio display unit
    Removal and Installation Audio display unit bracket Audio display unit Cluster lid D Multifunction switch Audio display unit bracket screws Audio display unit screws Metal Clip REMOVAL Remove cluster lid D. Refer to IP-18, "Removal and Installation". ...

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