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 

BCS-55, "Wiring Diagram"

.

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

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[LH FRONT ONLY AUTO DOWN]

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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 

PWC-62, "Removal and Instal-

lation"

.

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 

PWC-62, "Removal and Instal-

lation"

. 

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 

PWC-62, "Removal and Instal-

lation"

. 

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 

PWC-62, "Removal and Instal-

lation"

. 

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