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:

    Audio display unit
    Removal and Installation Audio display unit bracket Audio display unit Cluster lid D Multifunction switch Audio display unit bracket screws Audio display unit screws Metal Clip REMOVAL Remove cluster lid D. Refer to IP-18, "Removal and Installation". ...

    Driver Attention Alert system operation
    If the system detects driver fatigue or that driver attention is decreasing, the message "Take a break?"appears in the vehicle information display and a chime sounds when the vehicle is driven at speeds above 37 mph (60 km/h). The system continuously monitors driver attention and can pro ...

    Vehicle Dynamic Control (VDC) off switch
    The vehicle should be driven with the VDC system on for most driving conditions. If the vehicle is stuck in mud or snow, the VDC system reduces the engine output to reduce wheel spin. The engine speed will be reduced even if the accelerator is depressed to the floor. If maximum engine po ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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