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:

    Ground
    Ground Distribution MAIN HARNESS ENGINE ROOM HARNESS FRONT END MODULE HARNESS ENGINE CONTROL HARNESS BODY HARNESS BODY NO. 2 HARNESS ...

    Steering switch
    Removal and Installation REMOVAL Remove the driver airbag module. Refer to SR-12, "Removal and Installation". Remove the steering wheel audio control switch screws (A). Release the steering wheel audio control switch harness clips (B). Remove the steering wheel audio control switc ...

    Compression Pressure
    On-Vehicle Service CHECKING COMPRESSION PRESSURE Run the engine until it reaches normal operating temperature. Turn the ignition switch to OFF. Release fuel pressure. Refer to EC-592, "Inspection". Remove all six spark plugs. Refer to EM-12, "Removal and Installation". Attach a ...

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