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:

    Control cable
    Exploded View  CVT shift selector assembly  Control cable  Retainer grommet  Lock plate  Bracket  Transaxle assembly Removal and Installation REMOVAL CAUTION: Make sure that parking brake is applied before r ...

    Heater & cooling unit assembly
    Exploded View Wiring harness Mode door motor Upper floor connecting duct (LH) Air mix door motor (driver side) Heater core pipes cover Heater core In-cabin microfilter Filter cover Blower motor Intake door motor Blower unit Upper floor connecting duct (RH) Air mi ...

    Drive belt
    VQ35DE engine 1. Crankshaft pulley 2. Drive belt automatic tensioner pulley 3. Generator pulley 4. Air conditioner compressor pulley WARNING Be sure the ignition switch is placed in the OFF or LOCK position before servicing drive belt. The engine could rotate unexpectedly. 1. Visually ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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