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:

    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 ...

    Trunk opener request switch
    Removal and Installation REMOVAL Remove the license lamp finisher (1). Refer to EXL-166, "Removal and Installation". Remove the inner bracket screws (A) and inner bracket (2) from license lamp finisher (1). Remove the trunk lid request switch screw (B) and trunk lid req ...

    Front wiper auto stop signal circuit
    Component Function Check 1. CHECK FRONT WIPER (AUTO STOP) OPERATION CONSULT DATA MONITOR Select "WIP AUTO STOP" of IPDM E/R DATA MONITOR item. Operate the front wiper. With the front wiper operation, check the monitor status. Diagnosis Procedure 1. CHECK IPDM E/R OUTPUT VOLTAGE ...

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