Nissan Maxima Service and Repair Manual: 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:

    Folding rear seat
    Interior trunk access The trunk can be accessed from the passenger side of the rear seat for loading and unloading, as shown. 1. Move the front passenger seat to the most forward position. 2. Open the access cover on the rear parcel shelf. 3. Push down on the button 1 on the rear pa ...

    Signal buffer system
    System Diagram System Description IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via CAN communication. IPDM E/R receives the rear window defogger status signal from BCM via CAN communication and transmits it to ECM via ...

    B1017 - B1022 occupant classification system
    Description DTC B1017 - B1022 OCCUPANT CLASSIFICATION SYSTEM (OCS) The occupant classification system control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosissensor unit will monitor the occupant classification system for control unit and sensor mat failures and inter ...

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