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:

    Meter buzzer circuit
    Description The buzzer for warning chime system is installed in the combination meter. The combination meter sounds the alarm buzzer based on the signals transmitted from various units. Component Function Check 1. CHECK OPERATION OF METER BUZZER Select "BUZZER" of "BCM" on CONSUL ...

    System temporarily unavailable
    Condition A When the radar sensor picks up interference from another radar source, making it impossible to detect a vehicle ahead, the PFCW system is automatically turned off. The FEB system warning light (orange) will illuminate. Action to take When the above conditions no longer exist, th ...

    Removal and installation
    IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) Removal and Installation CAUTION: Do not remove the relays from the IPDM E/R. Tampering with the relays may cause additional incidents with the vehicle. REMOVAL Disconnect battery negative terminal. Refer to PG-67, " ...

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