Nissan Pathfinder (2008 year). Manual — part 641
REAR WIPER AND WASHER SYSTEM
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• BCM reads an auto stop signal from the rear wiper motor to detect a rear wiper motor position.
• When the rear wiper motor is at other than the stopping position, BCM continues to supply power to the rear
wiper motor until it returns to the stopping position.
NOTE:
BCM stops supplying power to the rear wiper motor when the ignition switch is turned OFF.
REAR WIPER OPERATION LINKED WITH WASHER
• BCM supplies power to the rear wiper motor according to the washer linked operating condition of rear
wiper. When the rear washer switch is turned OFF, BCM controls rear wiper to operate approximately three
times.
Washer linked operating condition of rear wiper
- Ignition switch ON
- Rear washer switch ON (0.4 second or more)
• Front and rear washer motor becomes grounded through the combination switch when the rear washer
switch is turned ON.
REAR WIPER DROP WIPE OPERATION
• BCM controls the rear wiper to operate once according to the rear wiper drop wipe operating condition.
Rear wiper drop wipe operating condition
- Ignition switch ON
- Rear wiper switch OFF
- Rear washer switch OFF
• BCM controls the rear wiper so that it operates once time approximately three seconds later after the washer
interlocking operation of the rear wiper.
REAR WIPER FAIL
−
SAFE OPERATION
BCM performs the fail-safe function when the rear wiper auto stop circuit is malfunctioning. Refer to
JPLIA0166GB
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< FUNCTION DIAGNOSIS >
REAR WIPER AND WASHER SYSTEM
Component Parts Location
INFOID:0000000001712147
Component Description
INFOID:0000000001712148
1.
BCM M18, M19, M20 (view with instru-
ment lower panel LH removed)
2.
Front and rear washer motor con-
nector E105
3.
Washer fluid reservoir
4.
Combination switch M28
5.
Rear washer nozzle
6.
Rear wiper motor D602
7.
Glass hatch ajar switch D503
ALLIA0618ZZ
Part
Description
BCM
• Judges each switch status by the combination switch reading function.
• Supplies power to the rear wiper motor.
• Performs the auto stop control of the rear wiper.
Combination switch
(Wiper and washer switch)
DIAGNOSIS SYSTEM (BCM)
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DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT-III Function (BCM - COMMON ITEM)
INFOID:0000000001712149
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions for each system.
NOTE:
It can perform the diagnosis modes except the following for all sub system selection items.
WIPER
WIPER : CONSULT-III Function (BCM - WIPER)
INFOID:0000000001712150
WORK SUPPORT
*:Factory setting
DATA MONITOR
Diagnosis mode
Function Description
WORK SUPPORT
Changes the setting for each system function.
SELF-DIAG RESULTS
Displays the diagnosis results judged by BCM. Refer to
CAN DIAG SUPPORT MNTR
Monitors the reception status of CAN communication viewed from BCM.
DATA MONITOR
The BCM input/output signals are displayed.
ACTIVE TEST
The signals used to activate each device are forcibly supplied from BCM.
ECU IDENTIFICATION
The BCM part number is displayed.
CONFIGURATION
• Enables to read and save the vehicle specification.
• Enables to write the vehicle specification when replacing BCM.
System
Sub system selection item
Diagnosis mode
WORK SUPPORT
DATA MONITOR
ACTIVE TEST
—
BCM
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Combination switch
COMB SW
×
Glass hatch ajar switch
TRUNK
×
×
Service item
Setting
item
Description
WIPER SPEED
SETTING
ON*
With vehicle speed
(Front wiper intermittent time linked with the vehicle speed and wiper intermittent dial position)
OFF
Without vehicle speed
(Front wiper intermittent time linked with the wiper intermittent dial position)
Monitor Item
[Unit]
Description
IGN ON SW
Ignition switch ON status judged from ignition power supply.
IGN SW CAN
Ignition switch ON status received from IPDM E/R with CAN communication.
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DIAGNOSIS SYSTEM (BCM)
ACTIVE TEST
FR WIPER HI
[OFF/ON]
Each switch status that BCM judges from the combination switch reading function.
FR WIPER LOW
[OFF/ON]
FR WIPER INT
[OFF/ON]
FR WASHER SW
[OFF/ON]
INT VOLUME
[1
−
7]
Each switch status that BCM judges from the combination switch reading function.
FR WIPER STOP
[OFF/ON]
Front wiper motor (stop position) status received from IPDM E/R with CAN communica-
tion.
VEHICLE SPEED
[km/h]
The value of the vehicle speed signal received from combination meter with CAN com-
munication.
RR WIPER ON
[OFF/ON]
Each switch status that BCM judges from the combination switch reading function.
RR WIPER INT
[OFF/ON]
RR WASHER SW
[OFF/ON]
RR WIPER STOP
[OFF/ON]
Rear wiper motor (stop position) status input from the rear wiper motor.
Monitor Item
[Unit]
Description
Test item
Operation
Description
FR WIPER
HI
Transmits the front wiper request signal (HI) to IPDM E/R with CAN communication to op-
erate the front wiper HI operation.
LO
Transmits the front wiper request signal (LO) to IPDM E/R with CAN communication to
operate the front wiper LO operation.
INT
Transmits the front wiper request signal (INT) to IPDM E/R with CAN communication to
operate the front wiper INT operation.
OFF
Stops transmitting the front wiper request signal to stop the front wiper operation.
RR WIPER
ON
Outputs the voltage to operate the rear wiper motor.
OFF
Stops the voltage to stop rear wiper motor operation.
DIAGNOSIS SYSTEM (IPDM E/R)
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DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description
INFOID:0000000001712151
AUTO ACTIVE TEST
Refer to PCS IPDM E/R AUTO ACTIVE TEST.
CONSULT - III Function (IPDM E/R)
INFOID:0000000001712152
APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.
SELF DIAGNOSTIC
DATA MONITOR
Monitor item
ACTIVE TEST
Test item
Diagnosis mode
Description
ECU Identification
Allows confirmation of IPDM E/R part number.
Self Diagnostic Result
Displays the diagnosis results judged by IPDM E/R.
Data Monitor
Displays the real-time input/output data from IPDM E/R input/output data.
Active Test
IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Monitor Item
[Unit]
MAIN
SIGNALS
Description
FR WIP REQ
[Stop/1LOW/Low/Hi]
×
Displays the status of the front wiper request signal received from BCM via CAN com-
munication.
WIP AUTO STOP
[STOP P/ACT P]
×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[Off/BLOCK]
×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
IGN RLY
[Off/On]
×
Displays the status of the ignition relay judged by IPDM E/R.
IGN ON SW
[Off/On]
Displays the status of the ignition switch judged by IPDM E/R.
Test item
Operation
Description
FRONT WIPER
Off
OFF
Lo
Operates the front wiper relay.
Hi
Operates the front wiper relay and front wiper high relay.
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WIPER AND WASHER FUSE
COMPONENT DIAGNOSIS
WIPER AND WASHER FUSE
Description
INFOID:0000000001712154
Fuse list
Diagnosis Procedure
INFOID:0000000001712155
1.
CHECK FUSES
Check that the following fuses are not blown.
Is the fuse blown?
YES
>> Replace the fuse after repairing the applicable circuit.
NO
>> The fuse is normal.
Unit
Location
Fuse No.
Capacity
Front wiper motor
IPDM E/R
39
30 A
Front and rear washer motor
Fuse block (J/B)
9
10 A
Unit
Location
Fuse No.
Capacity
Front wiper motor
IPDM E/R
39
30 A
Front and rear washer motor
Fuse block (J/B)
9
10 A
FRONT WIPER MOTOR LO CIRCUIT
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FRONT WIPER MOTOR LO CIRCUIT
Component Function Check
INFOID:0000000001712156
1.
CHECK FRONT WIPER LO OPERATION
IPDM E/R AUTO ACTIVE TEST
1.
Start IPDM E/R auto active test. Refer to
PCS-10, "Diagnosis Description"
2.
Check that the front wiper operates at the LO operation.
CONSULT-III ACTIVE TEST
1.
Select "FRONT WIPER" of IPDM E/R active test item.
2.
While operating the test item, check front wiper operation.
Is front wiper (LO) operation normal?
YES
>> Front wiper motor LO circuit is normal.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000001712157
1.
CHECK FRONT WIPER MOTOR FUSE
1.
Turn the ignition switch OFF.
2.
Check that the following fuse is not blown.
Is the fuse blown?
YES
>> GO TO 2
NO
>> GO TO 3
2.
CHECK FRONT WIPER MOTOR (LO) SHORT CIRCUIT
1.
Disconnect IPDM E/R and front wiper motor.
2.
Check continuity between IPDM E/R harness connector and
ground.
Does continuity exist?
YES
>> Repair or replace harness.
NO
>> Replace the fuse. (Replace IPDM E/R if the fuse is
blown again.)
3.
CHECK FRONT WIPER MOTOR (LO) OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
LO
: Front wiper (LO) operation
OFF
: Stop the front wiper.
Unit
Location
Fuse No.
Capacity
Front wiper motor
IPDM E/R
39
30 A
IPDM E/R
Ground
Continuity
Connector
Terminal
E121
32
No
ALLIA0447ZZ
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FRONT WIPER MOTOR LO CIRCUIT
1.
Turn the ignition switch ON.
2.
Select "FRONT WIPER" of IPDM E/R active test item.
3.
While operating the test item, check voltage between IPDM E/R
harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 4
NO
>> Replace IPDM E/R. Refer to
PCS-30, "Removal and Installation of IPDM E/R"
.
4.
CHECK FRONT WIPER MOTOR (LO) OPEN CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect IPDM E/R and front wiper motor.
3.
Check continuity between IPDM E/R harness connector and
front wiper motor harness connector.
Does continuity exist?
YES
>> Replace front wiper motor. Refer to
.
NO
>> Repair or replace harness.
Terminals
Test item
Voltage
(Approx.)
(+)
(-)
IPDM E/R
Ground
FRONT WIPER
Connector
Terminal
E121
32
LO
Battery
voltage
OFF
0V
WKIA3759E
IPDM E/R
Front wiper motor
Continuity
Connector
Terminal
Connector
Terminal
E121
32
E23
1
Yes
WKIA3197E
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