Nissan Frontier D40. Manual - part 766

INTERIOR ROOM LAMP CONTROL CIRCUIT

INL-19

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

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INTERIOR ROOM LAMP CONTROL CIRCUIT

Description

INFOID:0000000005272814

Controls the following interior room lamps (ground side) by PWM signal
• Front room/map lamp assembly (if equipped)
• Room lamp 2nd row
NOTE:
PWM signal control period is approximately 250 Hz (in the gradual brightening/dimming).

Component Function Check

INFOID:0000000005272815

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

CONSULT-III

1.

Switch the front room/map lamp assembly (if equipped) 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-19, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005272816

Regarding Wiring Diagram information, refer to 

INL-26, "Wiring Diagram"

.

1.

CHECK INTERIOR ROOM LAMP CONTROL OUTPUT

CONSULT-III

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

INL-20

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

INTERIOR ROOM LAMP CONTROL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector M20, room lamp 2nd row connector
and front room/map lamp connector (if equipped).

3.

Check continuity between BCM connector M20 terminal 63 and
interior room lamp connectors.

Is the inspection result normal?

YES

>> Check interior room lamp for an open. If OK, replace the

BCM. Refer to 

BCS-54, "Removal and Installation"

. If

NG, replace the interior room lamp. Refer to 

INL-64,

"Removal and Installation"

.

NO

>> Repair the harness or connectors.

3.

CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector M20, room lamp 2nd row connector
and front room/map lamp connector (if equipped).

3.

Check continuity between BCM connector M20 terminal 63 and
ground.

Is the inspection result normal?

YES

>> Check interior room lamp for a short circuit. If OK,

replace the BCM. Refer to 

BCS-54, "Removal and

Installation"

. If NG, replace the interior room lamp. Refer to 

INL-64, "Removal and Installation"

.

NO

>> Repair the harness or connectors.

Terminal

Terminal

Continuity

Connector

Terminal

Component

Connector

Terminal

A: M20

63

Room lamp 2nd 
row 

B: R10

1

Yes

Front room/map 
lamp (if 
equipped)

C: R9

2

AWLIA0727ZZ

Connector

Terminal

—

Continuity

M20

63

Ground

No

ALLIA0413GB

CARGO LAMP CONTROL CIRCUIT

INL-21

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

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CARGO LAMP CONTROL CIRCUIT

Description

INFOID:0000000005272817

Controls the cargo lamp relay coil (ground side) to turn the cargo lamp ON and OFF.

Diagnosis Procedure

INFOID:0000000005272818

Regarding Wiring Diagram information, refer to 

INL-26, "Wiring Diagram"

.

CAUTION:

 Before performing the diagnosis, check that the following is normal.
• Fuse
• Cargo lamp bulb

1.

CHECK CARGO LAMP OPERATION

Check the cargo lamp operation from the cargo lamp switch, the door switches, and a keyfob (if equipped).

Is the cargo lamp inoperative from all of the above switches and the keyfob (if equipped)?

YES

>> GO TO 4

NO

>> • Inoperative from cargo lamp switch only, GO TO 2

• Inoperative from door switches only, refer to 

DLK-27, "KING CAB : Description"

 (king cab), 

DLK-

29, "CREW CAB : Description"

 (crew cab).

• Inoperative from keyfob only, refer to 

DLK-51, "Description"

.

2.

CHECK CARGO LAMP SWITCH

Check the cargo lamp switch. Refer to 

INL-23, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Replace the cargo lamp switch.

3.

CHECK CARGO LAMP SWITCH CIRCUIT

1.

Disconnect BCM connector M18 and cargo lamp switch connec-
tor.

2.

Check continuity between BCM connector M18 (A) terminal 31
and cargo lamp switch connector M71 (B) terminal 1.

3.

Check continuity between BCM connector M18 terminal 31 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-54, "Removal and Installation"

.

NO

>> Repair harness or connectors.

4.

CHECK CARGO LAMP RELAY

Check the cargo lamp relay. Refer to 

INL-23, "Component Inspection"

.

Is the inspection result normal?

BCM

Cargo lamp switch

Continuity

Connector

Terminal

Connector

Terminal

M18 (A)

31

M71 (B)

1

Yes

AWLIA0807ZZ

Connector

Terminal

—

Continuity

M18 (A)

31

Ground

No

INL-22

< COMPONENT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

CARGO LAMP CONTROL CIRCUIT

YES

>> GO TO 5

NO

>> Replace the cargo lamp relay.

5.

CHECK CARGO LAMP RELAY CONTROL

While operating the cargo lamp switch, check voltage between BCM
connector M19 terminal 50 and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> GO TO 8

6.

CHECK CARGO LAMP VOLTAGE

1.

Disconnect the cargo lamp connector.

2.

While operating the cargo lamp switch, check voltage between
cargo lamp connector B161 terminal 3 and ground.

Is the inspection result normal?

YES

>> Replace cargo lamp.

NO

>> GO TO 7

7.

CHECK CARGO LAMP RELAY VOLTAGE PART 1

Check voltage between cargo lamp relay connector M165 terminal 5
and ground.

Is the inspection result normal?

YES

>> Repair harness or connectors between cargo lamp relay

and cargo lamp.

NO

>> Repair harness or connector between splice and cargo

lamp relay.

8.

CHECK CARGO LAMP RELAY VOLTAGE PART 2

Check voltage between cargo lamp relay connector M165 terminal 2
and ground.

Is the inspection result normal?

YES

>> GO TO 9

NO

>> Repair harness or connectors.

9.

CHECK CARGO LAMP RELAY CONTROL CIRCUIT

Connector

Terminal

—

Cargo lamp 

switch

Voltage

M19

50

Ground

ON

0V

OFF

Battery voltage

ALLIA0556GB

Connector

Terminal

—

Cargo lamp 

switch

Voltage

B161

3

Ground

ON

Battery voltage

AWLIA0809ZZ

Cargo lamp relay

Ground

Voltage

Connector

Terminal

M165

5

Battery voltage

AWLIA0810ZZ

Cargo lamp relay

Ground

Voltage

Connector

Terminal

M165

2

Battery voltage

AWLIA0812ZZ