Nissan Maxima Service and Repair Manual: Power consumption control system

System Diagram

Nissan Maxima. System Diagram

System Description

OUTLINE

  • IPDM E/R incorporates a power consumption control function that reduces the power consumption according to the vehicle status.
  • IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN communication.

Normal mode (wake-up)

  • CAN communication is normally performed with other control units.
  • Individual unit control by IPDM E/R is normally performed.

Low power consumption mode (sleep)

  • Low power consumption control is active.
  • CAN transmission is stopped.

SLEEP MODE ACTIVATION

  • IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communication.
  • Front wiper fail-safe operation
  • Outputting signals to actuators
  • Switches or relays operating
  • Auto active test is starting
  • Emergency OFF
  • Output requests are being received from control units via CAN communication.
  • IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.

WAKE-UP OPERATION

  • IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.
  • Ignition switch ON
  • An output request is received from a control unit via CAN communication.

Component Parts Location

Nissan Maxima. Component Parts Location

  1. BCM M16, M17, M18, M19, M20, M21 (view with instrument panel removed)
  2. Combination meter M24
  3. IPDM E/R E16, E17, E18, E200, E201, F10
    Signal buffer system
    System Diagram System Description IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM via CAN communication. IPDM E/R receives the ...

    Diagnosis system (IPDM E/R)
    Diagnosis Description AUTO ACTIVE TEST Description In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation. Oil pressure warning lamp F ...

    Other materials:

    BCM (Body control module))
    REMOVAL AND INSTALLATION Removal and Installation REMOVAL CAUTION: Before replacing BCM, perform "READ CONFIGURATION" to save or print current vehicle specification. Refer to BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) : Work Procedure ". Remo ...

    Diagnosis system (BCM)
    COMMON ITEM COMMON ITEM : CONSULT Function (BCM - COMMON ITE APPLICATION ITEM CONSULT performs the following functions via CAN communication with BC SYSTEM APPLICATION BCM can perform the following functions. INT LAMP INT LAMP : CONSULT Function (BCM - INT LAMP) DATA MONITOR ACTIVE TE ...

    Encoder
    DRIVER SIDE DRIVER SIDE : Description Detects condition of the front power window motor LH operation and transmits to main power window and door lock/unlock switch as pulse signal. DRIVER SIDE : Component Function Check 1. CHECK ENCODER OPERATION Check that front door glass LH performs AUTO ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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