Nissan Pathfinder. Manual - part 221

BCS

B259A ROOM LAMP FUSE

BCS-73

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-80, "Removal and Installation"

.

NO

>> Repair or replace harness or connectors.

BCM

Ground

Continuity

Connector

Terminal

M81

129

—

No

BCS-74

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

Diagnosis Procedure

INFOID:0000000009174915

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.

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

BCS

COMBINATION SWITCH INPUT CIRCUIT

BCS-75

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

COMBINATION SWITCH INPUT CIRCUIT

Diagnosis Procedure

INFOID:0000000009174916

Regarding Wiring Diagram information, refer to 

BCS-55, "Wiring Diagram"

.

1.

 CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN

1. Turn ignition switch OFF.

2. Disconnect BCM connector M19 and combination switch connector.

3. Check continuity between BCM connector M19 and combination switch connector.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connectors.

2.

 CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT

Check continuity between BCM connector M19 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connectors.

3.

 CHECK BCM OUTPUT VOLTAGE

1. Connect BCM connector M19 and combination switch connector.

2. Turn ignition switch ON.

3. Check voltage between BCM connector M19 and ground.

Signal

BCM

Combination switch

Continuity

Connector

Terminal

Connector

Terminal

INPUT 1

M19

79

M28

11

Yes

INPUT 2

78

9

INPUT 3

77

7

INPUT 4

76

10

INPUT 5

75

13

Signal

BCM

Ground

Continuity

Connector

Terminal

INPUT 1

M19

79

No

INPUT 2

78

INPUT 3

77

INPUT 4

76

INPUT 5

75

Signal

BCM

Ground

Voltage

Connector

Terminal

INPUT 1

M19

79

—

Refer to 

BCS-30, "Ref-

erence Value"

.

INPUT 2

78

INPUT 3

77

INPUT 4

76

INPUT 5

75

BCS-76

< DTC/CIRCUIT DIAGNOSIS >

[BCM]

COMBINATION SWITCH INPUT CIRCUIT

Is the inspection result normal?

YES

>> Replace the combination switch. Refer to 

BCS-81, "Removal and Installation"

.

NO

>> Replace BCM. Refer to 

BCS-80, "Removal and Installation"

.