Nissan Maxima Service and Repair Manual: Can communication

System 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 onto 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 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.

    Automatic speed control device (ASCD)
    System Diagram System Description INPUT/OUTPUT SIGNAL CHART *: This signal is sent to the ECM via the CAN communication line BASIC ASCD SYSTEM Refer to Owner's Manual for ASCD operating i ...

    Cooling fan control
    System Diagram System Description INPUT/OUTPUT SIGNAL CHART *1: The ECM determines the start signal status by the signals of engine speed and battery voltage. *2: This signal is sent to ...

    Other materials:

    Warning lamp
    Description  Warning lamp is built in combination meter.  Intelligent Key system malfunction is reported to the driver by the warning lamp illumination. Component Function Check 1.CHECK FUNCTION  Perform "INDICATOR" in the "Active Test" mode with CON ...

    ECU diagnosis information
    BCM (BODY CONTROL MODULE) Reference Value NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.  Activate and display TPMS transmitter IDs  Display tire pressure reported by the ...

    Parking brake switch signal circuit
    Description Transmits the parking brake switch signal to the combination meter. Component Function Check 1.COMBINATION METER INPUT SIGNAL  Select "METER/M&A" on CONSULT.  Monitor "PKB SW" of "DATA MONITOR" while applying and releasing the parking brake. > ...

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    Nissan Maxima Service and Repair Manual

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