Nissan Maxima Service and Repair Manual: U1000 CAN comm circuit

Description

CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

CAN Communication Signal Chart, refer to LAN-24, "CAN Communication Signal Chart".

DTC Logic

DTC DETECTION LOGIC

Diagnosis Procedure

1.PERFORM SELF DIAGNOSTIC

  1.  Turn ignition switch ON and wait for 2 seconds or more.

  2.  Check "Self Diagnostic Result".

    DTC/circuit diagnosis
    ...

    U1010 control unit (CAN)
    DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1. REPLACE BCM When DTC U1010 is detected, replace BCM.  Replace BCM. Refer to BCS-79, "Removal and Installation". ...

    Other materials:

    Front door speaker
    Removal and Installation REMOVAL Remove the front door finisher. Refer to INT-18, "Removal and Installation". Remove the front door speaker screws (A). Disconnect the harness connector from the front door speaker (1) and remove. Remove the front door speaker spacer screws (B) and ...

    Trunk lid
    WARNING Do not drive with the trunk lid open. This could allow dangerous exhaust gases to be drawn into the vehicle. For additional information, refer to "Exhaust gas (carbon monoxide)" in the "Starting and driving" section of this manual. Closely supervise children when they are a ...

    Microphone signal circuit
    Description Voice signals are transmitted from the microphone to the Bluetooth control unit using the microphone signal circuits. Diagnosis Procedure 1.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNIT AND MICROPHONE Turn ignition switch OFF. Disconnect Bluetooth control unit connector and ...

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    Nissan Maxima Service and Repair Manual

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