Nissan Maxima Service and Repair Manual: System description
FRONT WIPER AND WASHER SYSTEM
System Diagram
System Description
OUTLINE
The front wiper is controlled by each function of BCM and IPDM E/R.
Control by BCM
- Combination switch reading function
- Front wiper control function
Control by IPDM E/R
- Front wiper control function
- Relay control function
FRONT WIPER BASIC OPERATION
- BCM detects the combination switch condition by the combination
switch reading function.
- BCM transmits the front wiper request signal to IPDM E/R with CAN
communication depending on each
operating condition of the front wiper.
- IPDM E/R turns ON/OFF the integrated front wiper relay and the
front wiper high relay according to the front
wiper request signal. IPDM
E/R provides the power supply to operate the front wiper HI/LO operation.
FRONT WIPER LO OPERATION
- BCM transmits the front wiper request signal (LO) to IPDM E/R with
CAN communication according to the
front wiper LO operating condition.
Front wiper LO operating condition
- Ignition switch ON
- Front wiper switch LO or front wiper switch MIST (while pressing)
- IPDM E/R turns ON the integrated front wiper relay according to
the front wiper request signal (LO).
FRONT WIPER HI OPERATION
- BCM transmits the front wiper request signal (HI) to IPDM E/R with
CAN communication according to the
front wiper HI operating condition.
Front wiper HI operating condition
- Ignition switch ON
- Front wiper switch HI
- IPDM E/R turns ON the integrated front wiper relay and the front wiper
high relay according to the front wiper
request signal (HI).
FRONT WIPER INT OPERATION
- BCM transmits the front wiper request signal (INT) to IPDM E/R with CAN
communication depending on the
front wiper INT operating condition and
intermittent operation delay interval according to the wiper intermittent
dial position.
Front wiper INT operating condition
- Ignition switch ON
- Front wiper switch INT
- IPDM E/R turns ON the integrated front wiper relay so that the
front wiper is operated only once according to
the front wiper request
signal (INT).
- BCM detects stop position/except stop position of the front wiper
motor according to the front wiper auto stop
signal received from IPDM
E/R with CAN communication.
- BCM transmits the front wiper request signal (INT) again after the
intermittent operation delay interval.
NOTE:
Front wiper intermittent operation can
be set to the operation with vehicle speed by CONSULT. Refer to BCS-
23,
"WIPER : CONSULT Function (BCM - WIPER)".
Front wiper intermittent operation with vehicle speed
- BCM calculates the intermittent operation delay interval from the
following
- Vehicle speed signal (received from the combination meter with CAN
communication)
- Wiper intermittent dial position
*: When without vehicle speed setting
FRONT WIPER AUTO STOP OPERATION
- BCM stops transmitting the front wiper request signal when the
front wiper switch is turned OFF.
- IPDM E/R detects the front wiper auto stop signal from the front
wiper motor and detects the front wiper
motor position (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.
NOTE:
- BCM stops the transmitting of the front wiper request signal
when the ignition switch is OFF.
- IPDM E/R turns the front wiper relay OFF when the ignition
switch is OFF.
FRONT WIPER OPERATION LINKED WITH WASHER
- BCM transmits the front wiper request signal (LO) to IPDM E/R with
CAN communication according to the
washer linked operating condition of
the front wiper.
- BCM transmits the front wiper request signal (LO) so that the
front wiper operates approximately 2 times
when the front washer switch
OFF is detected.
Washer linked operating condition of front wiper
- Ignition switch ON
- Front washer switch ON (0.4 second or more)
- IPDM E/R turns ON the integrated front wiper relay according to the
front wiper request signal (LO).
- The front washer motor is grounded through the combination switch
when the front washer switch is ON.
FRONT WIPER FAIL−SAFE OPERATION
When the front wiper auto stop circuit is malfunctioning, IPDM E/R performs
the fail-safe function.
Component Parts Location
- Front washer motor E226 (view with
front bumper cover removed)
- Combination switch (wiper and washer
switch) M28
- Combination meter M24
- Front wiper motor E25
- IPDM E/R E17, E18, E200
- BCM M16, M17, M18, M19 (view with
instrument panel removed)
Component Description
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the e ...
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 f ...
Other materials:
Brake tube and hose
Hydraulic Circuit
Actuator
Master cylinder
Brake booster
Connector A. Union bolt
18.2 N*m (1.9 kg-m, 13 ft-lb)
B. Flare nut M12
22.1 N*m (2.3 kg-m, 16 ft-lb)
C. Flare nut M10
16.2 N*m (1.7 kg-m, 12 ft-lb)
CAUTION:
All hoses and piping (tubes) must be free from e ...
HVAC branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the A/C auto amp. for
damage, bend and loose connection (unit
side and connector side).
2.CHECK HARNESS FOR OPEN CIRCUI ...
Wiring diagram
WARNING CHIME SYSTEM
Wiring Diagram
...