Nissan Maxima Service and Repair Manual: 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 excellent error detection ability. Many electronic control units are equipped on a vehicle 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, CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

DTC DETECTION LOGIC

Nissan Maxima. 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" of "AV Control Unit".
    DTC/circuit diagnosis
    ...

    U1010 control unit (CAN)
    Description Initial diagnosis of AV control unit. DTC Logic DTC DETECTION LOGIC Diagnosis Procedure 1.REPLACE AV CONTROL UNIT hen DTC U1010 is detected, replace AV control unit ...

    Other materials:

    Diagnosis system (AV control unit)
    Diagnosis Description MULTIFUNCTION SWITCH AND PRESET SWITCH SELF-DIAGNOSIS FUNCTION The ON/OFF operation (continuity) of each switch in the multifunction switch and preset switch can be checked. Self-Diagnosis Mode Press the BACK switch and the switch of the 8-direction switches with ...

    CAN communication circuit
    Diagnosis Procedure 1.CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. Check terminals and connectors for damage, bend and loose connection. 2.CHECK HARNESS CON ...

    Key cylinder switch
    Description The main power window and door lock/unlock switch detects condition of the door key cylinder switch and transmits to BCM as the LOCK or UNLOCK signal. Component Function Check 1. CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL Check KEY CYL UN-SW, KEY CYL UN-SW in "DATA MONITOR" mod ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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