Nissan Frontier. Manual - part 922

POWER SUPPLY AND GROUND CIRCUIT

INL-15

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

C

D

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F

G

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INL

N

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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

INL-16

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

Description

INFOID:0000000009480136

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:0000000009480137

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY FUNCTION

WITH CONSULT

1. Turn ignition switch ON.

2. Turn each interior room lamp ON.

-

Front room/map lamp assembly

-

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-16, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009480138

Regarding Wiring Diagram information, refer to 

INL-37, "Wiring Diagram - With Power Door Lock System"

.

1.

CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OUTPUT

WITH CONSULT

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 after making sure the battery saver output/power supply circuit is not shorted to

voltage. Refer to 

BCS-49, "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

-

Vanity lamp LH (if equipped)

-

Vanity lamp RH (if equipped)

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

BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT

INL-17

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

C

D

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F

G

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INL

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-

Room lamp 2nd row

3. Check continuity between BCM connector M20 terminal 56 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-63,

"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

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

INL-18

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

INTERIOR ROOM LAMP CONTROL CIRCUIT

INTERIOR ROOM LAMP CONTROL CIRCUIT

Description

INFOID:0000000009480139

Controls the following interior room lamps (ground side) by PWM signal.

• Front room/map lamp assembly

• Room lamp 2nd row

NOTE:

PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).

Component Function Check

INFOID:0000000009480140

CAUTION:

 Before performing the diagnosis, check that the following is normal.

• Battery saver output/power supply

• Front room/map lamp bulbs (if equipped)

• Room lamp 2nd row bulb

1.

CHECK INTERIOR ROOM LAMP CONTROL FUNCTION

WITH CONSULT

1. Switch the front room/map lamp assembly and room lamp 2nd row switches to DOOR.

2. Turn ignition switch ON.

3. Select “INT LAMP” of BCM (INT LAMP) active test item.

4. While operating the test item, check that each interior room lamp turns ON/OFF (gradual brightening/dim-

ming).

Is the inspection result normal?

YES

>> Interior room lamp control circuit is normal.

NO

>> Refer to 

INL-18, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009480141

Regarding Wiring Diagram information, refer to 

INL-37, "Wiring Diagram - With Power Door Lock System"

.

1.

CHECK INTERIOR ROOM LAMP CONTROL OUTPUT

WITH CONSULT

1. Turn ignition switch ON.

2. Select “INT LAMP” of BCM (INT LAMP) active test item.

3. While operating the test item, check voltage between BCM con-

nector M20 terminal 63 and ground.

Is the inspection result normal?

YES

>> Interior room lamp control circuit is operating normally.

Fixed ON>>GO TO 3

Fixed OFF>> GO TO 2

2.

CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT

ON

: Interior room lamp gradual brightening

OFF

: Interior room lamp gradual dimming

(+)

(-)

INT LAMP

Voltage

Connector

Terminal

M20

63

Ground

ON

0V

OFF

Battery voltage

ALLIA0410GB