Nissan Pathfinder (2012 year). Manual — part 133
REAR WINDOW DEFOGGER SYSTEM
DEF-5
< SYSTEM DESCRIPTION >
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Component Parts Location
INFOID:0000000007355314
Component Description
INFOID:0000000007355315
*:if equipped
ALJIA0229ZZ
1.
BCM M18, M20 (view with instrument
lower panel LH removed)
2.
Rear window defogger switch M98
(with auto A/C) or M52 (without auto
A/C)
3.
A. Rear window defogger ground
connector D604
B. Rear window defogger connector
D651
4.
IPDM E/R (rear window defogger relay,
heated mirror relay if equipped) E120,
E122, E124
5.
Door mirror (door mirror defogger)
LH D4 (w/o ADP), D18 (with ADP)
RH D107 (w/o ADP), D118 (with
ADP) (if equipped)
BCM
• Operates the rear window defogger with the operation of rear window defogger switch.
• Performs the timer control of rear window defogger.
Rear window defogger relay
• Operates the rear window defogger with the control signal from BCM.
Rear window defogger switch
• The rear window defogger switch is turned ON.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.
Rear window defogger
• Heats the heating wire with the power supply from the rear window defogger relay to prevent
the rear window from fogging up.
Heated mirror relay*
Operates the door mirror defogger with the control signal from IPDM E/R. Controlled simulta-
neously with the rear window defogger relay.
Door mirror defogger*
The heating elements heat up when powered by the heated mirror relay to defog the door mirrors
or prevent the door mirrors from fogging up.
August 2012
2012 Pathfinder
DEF-6
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (BCM)
DIAGNOSIS SYSTEM (BCM)
COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)
INFOID:0000000007808147
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with BCM.
SYSTEM APPLICATION
BCM can perform the following functions.
Direct Diagnostic Mode
Description
Ecu Identification
The BCM part number is displayed.
Self Diagnostic Result
The BCM self diagnostic results are displayed.
Data Monitor
The BCM input/output data is displayed in real time.
Active Test
The BCM activates outputs to test components.
Work support
The settings for BCM functions can be changed.
Configuration
• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.
CAN Diag Support Mntr
The result of transmit/receive diagnosis of CAN communication is displayed.
System
Sub System
Direct Diagnostic Mode
E
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tifi
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Se
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no
st
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su
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Da
ta
Mo
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tor
A
cti
ve
T
est
W
o
rk support
Co
nf
igu
rat
ion
CA
N Diag
Su
pp
ort Mn
tr
Door lock
DOOR LOCK
×
×
×
Rear window defogger
REAR DEFOGGER
×
×
Warning chime
BUZZER
×
×
Interior room lamp timer
INT LAMP
×
×
×
Remote keyless entry system
MULTI REMOTE ENT
×
×
×
Exterior lamp
HEAD LAMP
×
×
×
Wiper and washer
WIPER
×
×
×
Turn signal and hazard warning lamps FLASHER
×
×
Air conditioner
AIR CONDITIONER
×
Intelligent Key system
INTELLIGENT KEY
×
Combination switch
COMB SW
×
BCM
BCM
×
×
×
×
×
Immobilizer
IMMU
×
×
×
Interior room lamp battery saver
BATTERY SAVER
×
×
×
Back door open
TRUNK
×
×
Vehicle security system
THEFT ALM
×
×
×
RAP system
RETAINED PWR
×
×
×
Signal buffer system
SIGNAL BUFFER
×
×
TPMS
AIR PRESSURE MONITOR
×
×
×
×
Panic alarm system
PANIC ALARM
×
August 2012
2012 Pathfinder
DIAGNOSIS SYSTEM (BCM)
DEF-7
< SYSTEM DESCRIPTION >
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REAR WINDOW DEFOGGER
REAR WINDOW DEFOGGER : CONSULT Function (BCM - REAR DEFOGGER)
INFOID:0000000007808148
DATA MONITOR
ACTIVE TEST
Monitor Item [Unit]
Description
IGN ON SW [On/Off]
Indicates condition of ignition switch ON position.
ACC ON SW [On/Off]
Indicates condition of ignition switch ACC position.
REAR DEF SW [On/Off]
Indicates condition of rear window defogger switch.
Test Item
Description
REAR DEFOGGER
This test is able to check rear window defogger operation [Off/On].
August 2012
2012 Pathfinder
DEF-8
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER SWITCH
DTC/CIRCUIT DIAGNOSIS
REAR WINDOW DEFOGGER SWITCH
Description
INFOID:0000000007355318
• The rear window defogger is operated by turning the rear window defogger switch ON.
• Turns the indicator lamp in the rear window defogger switch ON when operating the rear window defogger.
Component Function Check
INFOID:0000000007355319
1.
CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
Check that the indicator lamp of rear window defogger illuminates with rear window defogger switch ON.
Is the inspection result normal?
YES
>> Rear window defogger switch function is OK.
NO
>> Refer to
DEF-8, "Diagnosis Procedure A/C and AV Switch Assembly"
"Diagnosis Procedure Front Air Control"
Diagnosis Procedure A/C and AV Switch Assembly
INFOID:0000000007355320
Regarding Wiring Diagram information, refer to
.
1.
CHECK A/C AND AV SWITCH ASSEMBLY (REAR WINDOW DEFOGGER SWITCH) CIRCUIT
Operate the rear window defogger switch.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 2
2.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and A/C and AV switch assembly.
3. Check continuity between BCM harness connector M18 (A) terminal 9 and A/C and AV switch assembly
harness connector M98 (B) terminal 16.
4. Check continuity between BCM harness connector M18 (A) terminal 9 and ground.
Is the inspection result normal?
YES
>> Replace A/C and AV switch assembly. Refer to
VTL-7, "Removal and Installation"
NO
>> Repair or replace harness.
BCM connector
Terminal
A/C and AV switch
assembly connector
Terminal
Continuity
M18 (A)
9
M98 (B)
16
Yes
ALLIA0315ZZ
BCM connector
Terminal
Ground
Continuity
M18 (A)
9
No
August 2012
2012 Pathfinder
REAR WINDOW DEFOGGER SWITCH
DEF-9
< DTC/CIRCUIT DIAGNOSIS >
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Diagnosis Procedure Front Air Control
INFOID:0000000007355321
Regarding Wiring Diagram information, refer to
.
1.
CHECK FRONT AIR CONTROL (REAR WINDOW DEFOGGER SWITCH) CIRCUIT
Operate the rear window defogger switch.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> GO TO 2
2.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and front air control.
3. Check continuity between BCM harness connector M18 terminal
9 and front air control harness connector M52 terminal 11.
4. Check continuity between BCM harness connector M18 terminal
9 and ground.
Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-7, "Removal and Installation"
NO
>> Repair or replace harness.
BCM connector
Terminal
Front air control
connector
Terminal
Continuity
M18
9
M52
11
Yes
BCM connector
Terminal
Ground
Continuity
M18
9
No
LIIA2047E
August 2012
2012 Pathfinder
DEF-10
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
Description
INFOID:0000000007355322
Power is supplied to the rear window defogger with BCM control.
Component Function Check
INFOID:0000000007355323
1.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
Check that an operation noise of rear window defogger relay (located in IPDM E/R) can be heard when turning
the rear window defogger switch ON.
Is the inspection result normal?
YES
>> Rear window defogger relay power supply circuit is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000007355324
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES
Check if any of the following fuses in the IPDM E/R are blown.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK REAR WINDOW DEFOGGER RELAY
Check rear window defogger relay.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Replace rear window defogger relay.
3.
CHECK REAR WINDOW DEFOGGER RELAY POWER SUPPLY CIRCUIT
COMPONENT PARTS
AMPERE
FUSE NO.
IPDM E/R
15A
46
IPDM E/R
15A
47
Terminal
Condition
Continuity
Rear window
defogger relay
3
5
12V direct current supply between termi-
nals 1 and 2.
Yes
No current supply
No
SEF497Y
August 2012
2012 Pathfinder
REAR WINDOW DEFOGGER RELAY
DEF-11
< DTC/CIRCUIT DIAGNOSIS >
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1. Turn ignition switch ON.
2. Check voltage between IPDM E/R connector E124 terminal 60
and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Replace IPDM E/R. Refer to
PCS-29, "Removal and Installation of IPDM E/R"
.
4.
CHECK INTERMITTENT INCIDENT
Check intermittent incident.
GI-37, "Intermittent Incident"
Is the inspection result normal?
YES
>> Check the following.
• Battery power supply circuit.
• IPDM E/R.
NO
>> Repair or replace the malfunctioning parts.
Terminals
Condition of rear
window defogger
switch
Voltage (V)
(Approx.)
(+)
(–)
IPDM E/R con-
nector
Terminal
E124
60
Ground
ON Battery
voltage
OFF
0
LIIA2190E
August 2012
2012 Pathfinder
DEF-12
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
REAR WINDOW DEFOGGER POWER SUPPLY AND GROUND CIRCUIT
Description
INFOID:0000000007355325
Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window
from fogging up.
Component Function Check
INFOID:0000000007355326
1.
CHECK REAR WINDOW DEFOGGER
Check that the heating wire of rear window defogger is heated when turning the rear window defogger switch
ON.
Is the inspection result normal?
YES
>> Rear window defogger is OK.
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000007355327
Regarding Wiring Diagram information, refer to
.
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Press the rear window defogger switch.
3. Check voltage between rear window defogger harness connec-
tor D651 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> GO TO 3
2.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear window defogger.
3. Check continuity between rear window defogger harness con-
nector D604 terminal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace harness.
3.
CHECK HARNESS CONTINUITY
Terminals
Condition of rear
window
defogger switch
Voltage (V)
(Approx.)
(+)
(–)
Rear window
defogger
connector
Terminal
D651
1
Ground
ON
Battery voltage
OFF
0
ALLIA0177ZZ
Rear window defogger connector
Terminal
Ground
Continuity
D604
2
Yes
ALLIA0178ZZ
August 2012
2012 Pathfinder
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