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:

    Can communication system
    System Description CAN communication is a multiplex communication system. This enables the system to transmit and receive large quantities of data at high speed by connecting control units with two communication lines (CAN-H and CAN-L). Control units on the CAN network transmit signals usi ...

    Key slot illumination
    Description Blinks when Intelligent Key insertion is required. Component Function Check 1. CHECK FUNCTION With CONSULT Check key slot illumination KEY SLOT ILLUMI in Active Test mode. Diagnosis Procedure 1. CHECK KEY SLOT ILLUMINATION OUTPUT SIGNAL Check voltage between key slot connector ...

    Front door glass
    Exploded View Door panel Door glass Regulator assembly Door module assembly Window motor Removal and Installation REMOVAL Remove the front door finisher. Refer to INT-18, "Removal and Installation". Remove the adhesive bolt hole covers. Reconnect the window switch to ...

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