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:

    Interior trunk lid release
    WARNING Closely supervise children when they are around cars to prevent them from playing and becoming locked in the trunk where they could be seriously injured. Keep the car locked, with the rear seatback and trunk lid securely latched when not in use, and prevent children's access to ca ...

    Brake fluid
    Inspection LEVEL CHECK Make sure that a brake fluid level in reservoir tank is between MAX and MIN lines as shown. Visually check around reservoir tank for fluid leakage. If the level is excessively low, check brake system for leaks. If brake warning lamp remains illuminated aft ...

    Audio antenna
    Location of Antenna AV control unit AV control unit antenna feeder In-line connectors M103, M501 Antenna amp. Window antenna Satellite radio antenna feeder Satellite radio antenna Window Antenna Repair ELEMENT CHECK Attach probe circuit tester (ohm setting) to antenna ...

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