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:

    B2630, B2631 sunload sensor
    Description COMPONENT DESCRIPTION Sunload Sensor The sunload sensor (1) is located on the driver side defroster grille. It detects sunload entering through windshield by means of a photo diode. The sensor converts the sunload into a current value, which is then input into the A/C auto ...

    IPDM E/R (intelligent power distribution module engine room)
    Reference Value VALUES ON THE DIAGNOSIS TOOL TERMINAL LAYOUT PHYSICAL VALUES Fail Safe CAN COMMUNICATION CONTROL When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN communication recovers normally, it also returns to nor ...

    B2113 reclining motor
    Description The seat reclining motor is installed to the seatback assembly. The seat reclining motor is activated with the driver seat control unit. Tilts the seatback forward/backward by changing the rotation direction of reclining motor. DTC Logic DTC DETECTION LOGIC DTC No. ...

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