Nissan Frontier D40. Manual — part 765

POWER SUPPLY AND GROUND CIRCUIT

INL-15

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

COMPONENT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

BCM

BCM : Diagnosis Procedure

INFOID:0000000005550754

Regarding Wiring Diagram information, refer to

BCS-46, "Wiring Diagram"

.

1.

CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM.

3.

Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

18 (10A)

70

G (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

1 (10A)

Connector

Terminals

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC

power

supply

Ignition

switch

ACC or

ON

Battery voltage

38

Ground

Ignition

power

supply

Ignition

switch ON

or START

Battery voltage

M20

57

Ground

Battery

power

supply

Ignition

switch

OFF

Battery voltage

70

Ground

Battery

power

supply

Ignition

switch

OFF

Battery voltage

LIIA2415E

INL-16

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

POWER SUPPLY AND GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

INL-17

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

Description

INFOID:0000000005272811

Provides the battery saver output/power supply. Also cuts the power supply when the interior room lamp bat-
tery saver is activating.

Component Function Check

INFOID:0000000005272812

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION

CONSULT-III

1.

Turn ignition switch ON.

2.

Turn each interior room lamp ON.

-

Front room/map lamp assembly (if equipped)

-

Vanity lamps (if equipped)

-

Room lamp 2nd row

3.

Select “BATTERY SAVER” of BCM (BATTERY SAVER) active test item.

4.

While operating the test item, check that each interior room lamp turns ON/OFF.

Is the inspection result normal?

YES

>> Battery saver output/power supply circuit is normal.

NO

>> Refer to

INL-17, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005272813

Regarding Wiring Diagram information, refer to

INL-26, "Wiring Diagram"

.

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT

CONSULT-III

1.

Turn ignition switch ON.

2.

Select “BATTERY SAVER” of BCM (BATTERY SAVER) active
test item.

3.

While operating the test item, check voltage between BCM con-
nector M20 terminal 56 and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Replace BCM. Refer to

BCS-54, "Removal and Installation"

.

2.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OPEN CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect the following connectors.

-

BCM M20

-

Ignition keyhole illumination (if equipped)

-

Front room/map lamp assembly (if equipped)

-

Vanity lamp LH (if equipped)

-

Vanity lamp RH (if equipped)

-

Room lamp 2nd row

OFF

: Interior room lamp OFF

ON

: Interior room lamp ON

(+)

(-)

Test item

Voltage

Connector

Terminal

BATTERY SAVER

M20

56

Ground

OFF

0V

ON

Battery voltage

ALLIA0408GB

INL-18

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

3.

Check continuity between BCM connector and each interior room lamp connector.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair the harness or connectors.

3.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY SHORT CIRCUIT

Check continuity between BCM connector M20 terminal 56 and
ground.

Is the inspection result normal?

YES

>> Replace the interior room lamp. Refer to

INL-64,

"Removal and Installation"

.

NO

>> Repair the harness or connectors.

BCM

Each interior room lamp

Continuity

Connector

Terminal

Connector

Terminal

M20

56

Ignition keyhole illumination (if equipped)

M150

1

Yes

Front room/map lamp assembly (if equipped)

R9

1

Vanity lamp LH (if equipped)

B80

1

Vanity lamp RH (if equipped)

B81

1

Room lamp 2nd row

R10

2

Connector

Terminal

—

Continuity

M20

56

Ground

No

ALLIA0409GB