Nissan Frontier. Manual - part 923

INTERIOR ROOM LAMP CONTROL CIRCUIT

INL-19

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

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1. Turn ignition switch OFF.

2. Disconnect BCM connector M20, room lamp 2nd row connector

and front room/map lamp connector.

3. Check continuity between BCM connector M20 (A) 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-49, "Removal and Installation"

. If

NG, replace the interior room lamp. Refer to 

INL-63,

"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.

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-49, "Removal and

Installation"

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

INL-63, "Removal and Installation"

.

NO

>> Repair the harness or connectors.

Terminal

Terminal

Continuity

Connector

Terminal

Component

Connector

Terminal

M20 (A)

63

Room lamp 2nd 
row 

R10 (B)

1

Yes

Front room/map 
lamp

R9 (C)

2

AWLIA0727ZZ

Connector

Terminal

—

Continuity

M20

63

Ground

No

ALLIA0413GB

INL-20

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

CARGO LAMP CONTROL CIRCUIT

CARGO LAMP CONTROL CIRCUIT

Description

INFOID:0000000009480142

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

Diagnosis Procedure

INFOID:0000000009480143

Regarding Wiring Diagram information, refer to 

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

.

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 operative from all of the above switches and the keyfob (if equipped)?

YES

>> At this time, the cargo lamp operates normally.

NO

>> • Inoperative from all the above switches and the keyfob, GO TO 6

• 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"

.

• Fixed ON, GO TO 2

2.

CHECK CARGO LAMP SWITCH

Check the cargo lamp switch. Refer to 

INL-22, "Component Inspection"

.

Is the inspection result normal?

YES

>> • For inoperative from cargo lamp switch only, GO TO 3

• For fixed ON, GO TO 5

NO

>> Replace the cargo lamp switch.

3.

CHECK CARGO LAMP SWITCH CIRCUIT OPEN

1. Disconnect BCM connector M18 and cargo lamp switch connector.

2. Check continuity between BCM connector M18 terminal 31 and cargo lamp switch connector M71 termi-

nal 1.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connectors.

4.

CHECK CARGO LAMP SWITCH GROUND CIRCUIT

1. Check continuity between cargo lamp switch connector M71 terminal 3 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-49, "Removal and Installation"

.

NO

>> Repair harness or connectors.

BCM

Cargo lamp switch

Continuity

Connector

Terminal

Connector

Terminal

M18

31

M71

1

Yes

Connector

Terminal

—

Continuity

M71

3

Ground

Yes

CARGO LAMP CONTROL CIRCUIT

INL-21

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

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5.

CHECK CARGO LAMP SWITCH CIRCUIT SHORT

1. Disconnect BCM connector M18 and cargo lamp switch connector.

2. Check continuity between BCM connector M18 terminal 31 and ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair harness or connectors.

6.

CHECK CARGO LAMP RELAY

Check the cargo lamp relay. Refer to 

INL-22, "Component Inspection"

.

Is the inspection result normal?

YES

>> • For fixed OFF, GO TO 7

• For fixed ON, GO TO 13

NO

>> Replace the cargo lamp relay.

7.

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 8

NO

>> GO TO 11

8.

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

>> GO TO 9

NO

>> GO TO 10

9.

CHECK CARGO LAMP GROUND CIRCUIT

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

terminal 2.

Is the inspection result normal?

YES

>> Replace cargo lamp.

NO

>> Repair harness or connectors.

10.

CHECK CARGO LAMP RELAY VOLTAGE PART 1

Connector

Terminal

—

Continuity

M18

31

Ground

No

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

Connector

Terminal

(+)

Terminal

(-)

Cargo lamp 

switch

Voltage

B161

3

2

ON

Battery voltage

INL-22

< DTC/CIRCUIT DIAGNOSIS >

[WITH POWER DOOR LOCKS]

CARGO LAMP CONTROL CIRCUIT

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.

11.

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 12

NO

>> Repair harness or connectors.

12.

CHECK CARGO LAMP RELAY CONTROL CIRCUIT OPEN

1. Disconnect BCM connector M19 and cargo lamp relay.

2. Check continuity between BCM connector M19 terminal 50 and cargo lamp relay connector M165 termi-

nal 1.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-49, "Removal and Installation"

.

NO

>> Repair harness or connectors.

13.

CHECK CARGO LAMP RELAY CONTROL CIRCUIT SHORT

1. Disconnect BCM connector M19 and cargo lamp relay.

2. Check continuity between BCM connector M19 terminal 50 and ground.

Is the inspection result normal?

YES

>> Replace BCM after making sure the cargo lamp power supply circuit is not shorted to voltage.

Refer to 

BCS-49, "Removal and Installation"

.

NO

>> Repair harness or connectors.

Component Inspection

INFOID:0000000009480144

CARGO LAMP SWITCH

1.

CHECK CARGO LAMP SWITCH

Cargo lamp relay

Ground

Voltage

Connector

Terminal

M165

5

Battery voltage

AWLIA0810ZZ

Cargo lamp relay

Ground

Voltage

Connector

Terminal

M165

2

Battery voltage

AWLIA0812ZZ

BCM

Cargo lamp relay

Continuity

Connector

Terminal

Connector

Terminal

M19

50

M165

1

Yes

Connector

Terminal

—

Continuity

M19

50

Ground

No