Nissan Maxima Service and Repair Manual: Power consumption control system
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

- BCM M16, M17, M18, M19, M20,
M21 (view with instrument panel removed)
- Combination meter M24
- IPDM E/R E16, E17, E18, E200,
E201, F10
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 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:
B2634, B2635 air mix door motor (passenger side)
Description
COMPONENT DESCRIPTION
Air Mix Door Motor (passenger side)
The air mix door motor (passenger side) (1) is attached to the
heater & cooling unit assembly.
It rotates so that the air mix door is opened or closed to a
position
set by the A/C auto amp.
Motor rotation is t ...
Sunroof motor assembly
Removal and Installation
REMOVAL
CAUTION:
Before removing sunroof motor, check that glass lid is fully
closed.
After removing sunroof motor, do not attempt to rotate sunroof
motor assembly as a single unit.
Close glass lid.
Remove the headlining. Refer to INT-33, "Removal a ...
Turn signal and hazard warning lamp system
Wiring Diagram
...