Nissan Sentra Service Manual: System
System Diagram

System Description
FRONT WIPER CONTROL (BASIC)
- BCM detects the combination switch position by the combination switch
reading function.
- BCM transmits the front wiper request signal to the IPDM E/R using CAN
communication.
- IPDM E/R controls the integrated front wiper relay and front wiper high
relay based on the status of the
front wiper request signal.
- IPDM E/R provides power to operate the front wiper motor.
LOW SPEED OPERATION
- Ignition switch ON.
- Front wiper switch in LO or MIST position.
- BCM reads the combination switch position and transmits the front wiper
request signal (LO) to IPDM E/R
using CAN communication.
- IPDM E/R turns ON the front wiper relay.
HIGH SPEED OPERATION
- Ignition switch ON.
- Front wiper switch in HI.
- BCM reads the combination switch position and transmits the front wiper
request signal (HI) to IPDM E/R
using CAN communication
- IPDM E/R turns ON the front wiper relay and the front wiper high relay.
INTERMITTENT OPERATION
- Ignition switch ON.
- Front wiper switch INT.
- BCM reads the combination switch position. BCM calculates the delay
interval based on the table below
and then transmits the front wiper request signal (INT) to IPDM E/R using
CAN communication.
- IPDM E/R turns ON the front wiper relay only once.
- BCM detects stop position of the front wiper motor based on the front
wiper stop position signal received
from the IPDM E/R.
- BCM transmits the front wiper request signal (INT) again after the delay
interval.


AUTO STOP OPERATION
- Front wiper switch is turned OFF.
- BCM monitors wiper switch position by combination switch reading
position function.
- BCM stops transmitting the front wiper request signal to the IPDM E/R.
- IPDM E/R detects the front wiper auto stop signal from the position of
the front wiper motor (stop position/
except stop position).
- When the front wiper request signal is stopped, IPDM E/R turns ON the
front wiper relay until the front
wiper motor returns to the stop position
- IPDM E/R turns the front wiper relay OFF when the front wiper motor has
reached the stop position.

MIST OPERATION
- Ignition switch ON.
- Front washer switch in OFF position.
- Front wiper switch in MIST position.
- BCM reads the combination switch position and transmits the front wiper
request signal (LO) to IPDM E/R
using CAN communication.
- IPDM E/R turns ON the front wiper relay.
- The front wiper operates once after the front washer operation.
WIPER/WASHER OPERATION
- Ignition switch ON.
- Front washer switch ON.
- The front washer switch provides ground for the front washer motor.
- BCM reads the combination switch position and transmits the front wiper
request signal (LO) to IPDM E/R
using CAN communication.
- BCM transmits the front wiper request signal (LO) to IPDM E/R using CAN
communication.
- IPDM E/R turns ON the front wiper relay.
- The front wiper operates.
NOTE:
BCM transmits the front wiper request signal (LO) so that the front wiper
operates approximately 3 times after
front washer switch OFF is detected.
Fail-Safe
FAIL−SAFE OPERATION
IPDM E/R performs the fail-safe function when the front wiper auto stop
circuit is malfunctioning. Refer to
PCS-19, "Fail-safe" (with Intelligent Key system) or PCS-47, "Fail-Safe"
(without Intelligent Key system).
Component Parts Location
BCM (view under instrument panel,
left side of vehicle)
Combination meter
IPDM E/R (view with air inlet duct
removed)
Combination switch (wiper and
washer ...
Common item
Common item : consult function (bcm - common item)
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the ...
Other materials:
Front door
Door assembly
Door assembly : removal and installation
CAUTION:
Use two people when removing or installing the front door assembly
due to its heavy weight.
When removing and installing front door assembly, support front
door using a suitable tool.
Do not use air tools or electric to ...
Water hose
Exploded View
Water outlet
Heater thermostat assembly
Hose clamp
CVT oil warmer
Water hose
To thermostat housing
To engine oil cooler
: Always replace after every
disassembly.
: NВ·m (kg-m, ft-lb)
Removal and Installation
REMOVAL
WARNING:
Do not remove the radi ...
Three Way Catalyst
If a large amount of unburned fuel flows into the catalyst, the catalyst
temperature will be excessively high. To
prevent this, follow the instructions.
Use unleaded gasoline only. Leaded gasoline will seriously damage the
three way catalyst.
When checking for ignition spark or measuring ...
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