Nissan Pathfinder. Manual — part 933
PWC-28
< DTC/CIRCUIT DIAGNOSIS >
[LH FRONT ONLY AUTO DOWN]
POWER SUPPLY AND GROUND CIRCUIT
DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM
BCM : Diagnosis Procedure
INFOID:0000000009781491
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse or fusible link blown?
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connector M81.
2. Check voltage between BCM connector M81 terminals 131, 139 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness or connectors.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM connector M81 terminals 134, 143 and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace harness or connectors.
POWER WINDOW MAIN SWITCH
POWER WINDOW MAIN SWITCH : Description
INFOID:0000000009176115
• BCM supplies power.
• It operates each power window motor via corresponding power window switch and makes window move up/
down when main power window and door lock/unlock switch is operated.
Terminal No.
Signal name
Fuse and fusible link No.
139
Fusible link battery power
O (40A)
131
BCM battery fuse
1 (10A)
BCM
Ground
Voltage
(Approx.)
Connector
Terminal
M81
131
—
Battery voltage
139
BCM
Ground
Continuity
Connector
Terminal
M81
134
—
Yes
143
POWER SUPPLY AND GROUND CIRCUIT
PWC-29
< DTC/CIRCUIT DIAGNOSIS >
[LH FRONT ONLY AUTO DOWN]
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PWC
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POWER WINDOW MAIN SWITCH : Component Function Check
INFOID:0000000009176116
Main Power Window And Door Lock/unlock Switch
1.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH FUNCTION
Check power window motor operation with main power window and door lock/unlock switch.
Is the inspection result normal?
YES
>> Main power window and door lock/unlock switch power supply and ground circuit are OK.
NO
>> Refer to
PWC-29, "POWER WINDOW MAIN SWITCH : Diagnosis Procedure"
POWER WINDOW MAIN SWITCH : Diagnosis Procedure
INFOID:0000000009176117
Regarding Wiring Diagram information, refer to
PWC-17, "Wiring Diagram - With Left Front Only Auto Down"
Main Power Window And Door Lock/unlock Switch Power Supply Circuit Check
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between main power window and door lock/unlock switch connectors D23, D24 and
ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM, main power window and door lock/unlock switch, power window and door lock/unlock
switch RH, rear power window switch LH and rear power window switch RH.
3. Check continuity between BCM connector and main power window and door lock/unlock switch connec-
tors.
4. Check continuity between BCM connector M81 and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace the harness or connectors.
3.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect main power window and door lock/unlock switch.
Terminal
Voltage
(Approx.)
(+)
(–)
Main power window and door lock/unlock switch
Terminal
D23
10
Ground
Battery voltage
D24
18
BCM
connector
Terminal
Main power window and door lock/unlock switch connector
Terminal
Continuity
M81
140
D23
10
Yes
141
D24
18
BCM connector
Terminal
Ground
Continuity
M81
140
No
141
PWC-30
< DTC/CIRCUIT DIAGNOSIS >
[LH FRONT ONLY AUTO DOWN]
POWER SUPPLY AND GROUND CIRCUIT
3. Check continuity between main power window and door lock/unlock switch connector D23 and ground.
Is the inspection result normal?
YES
>> Check main power window and door lock/unlock switch output signal (rear power window switch
LH) GO TO 5.
YES
>> Check main power window and door lock/unlock switch output signal (rear power window switch
RH) GO TO 6.
YES
>> Check main power window and door lock/unlock switch output signal (front power window switch
LH) GO TO 7.
YES
>> Check main power window and door lock/unlock switch output signal (front power window switch
RH) GO TO 8.
NO
>> Repair or replace the harness or connectors.
4.
CHECK BCM OUTPUT SIGNAL
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM connector M81 and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace BCM. Refer to
BCS-80, "Removal and Installation"
5.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POW-
ER WINDOW SWITCH LH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch D23 and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace main power window and door lock/unlock switch. Refer to
.
6.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (REAR POW-
ER WINDOW SWITCH RH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch D23 and ground.
Main power window and door lock/unlock switch connector
Terminal
Ground
Continuity
D23
1
Yes
Terminals
Voltage
(Approx.)
(+)
(–)
BCM connector
Terminal
M81
140
Ground
Battery voltage
141
Terminal
Window switch
position (rear LH)
Voltage
(Approx.)
(+)
(–)
Main power window and door lock/
unlock switch connector
Terminal
D23
9
Ground
UP
Battery voltage
DOWN
0
8
UP
0
DOWN
Battery voltage
POWER SUPPLY AND GROUND CIRCUIT
PWC-31
< DTC/CIRCUIT DIAGNOSIS >
[LH FRONT ONLY AUTO DOWN]
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Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace main power window and door lock/unlock switch. Refer to
.
7.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (FRONT
POWER WINDOW SWITCH LH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch D24 and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace main power window and door lock/unlock switch. Refer to
.
8.
CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL (FRONT
POWER WINDOW SWITCH RH)
1. Connect main power window and door lock/unlock switch.
2. Turn ignition switch ON.
3. Check voltage between main power window and door lock/unlock switch D23 and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-49, "Intermittent Incident"
.
NO
>> Replace main power window and door lock/unlock switch. Refer to
.
Terminal
Window switch
position (rear RH)
Voltage
(Approx.)
(+)
(–)
Main power window and door
lock/unlock switch connector
Terminal
D23
7
Ground
UP
Battery voltage
DOWN
0
6
UP
0
DOWN
Battery voltage
Terminal
Window switch
position (front LH)
Voltage
(Approx.)
(+)
(–)
Main power window and door lock/
unlock switch connector
Terminal
D24
17
Ground
UP
Battery voltage
DOWN
0
19
UP
0
DOWN
Battery voltage
Terminal
Window switch
position (front RH)
Voltage
(Approx.)
(+)
(–)
Main power window and door
lock/unlock switch connector
Terminal
D23
16
Ground
UP
Battery voltage
DOWN
0
2
UP
0
DOWN
Battery voltage
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