Nissan Titan A60. Manual - part 650

INTERIOR ROOM LAMP CONTROL CIRCUIT

INL-21

< DTC/CIRCUIT DIAGNOSIS >

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1. Turn ignition switch OFF.

2. On Crew Cab models with rear roof console, disconnect

BCM connector M20, door mirror connectors (with puddle

lamps) and personal lamp 2nd row connector.

3. Switch the front room/map lamp assembly switch to ON posi-

tion. 

4. Check continuity between BCM connector M20 terminal 63 and

ground.

5. On models except Crew Cab with rear roof console, discon-

nect BCM connector M20, door mirror connectors (with puddle

lamps), room lamp connector (if equipped) or front room/map

lamp assembly connector (if equipped).

6. Check continuity between BCM connector M20 terminal 63 and

ground.

Is the inspection result normal?

YES

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

replace BCM. Refer to 

BCS-53, "Removal and Installation"

. If NG, replace interior room lamp.

Refer to 

INL-72, "Removal and Installation"

.

NO

>> Repair the harness or connectors.

Connector

Terminal

—

Continuity

M20

63

Ground

No

ALLIA0413GB

Connector

Terminal

—

Continuity

M20

63

Ground

No

ALLIA0413GB

INL-22

< DTC/CIRCUIT DIAGNOSIS >

STEP LAMP CIRCUIT

STEP LAMP CIRCUIT

Description

INFOID:0000000006164467

Controls the front and rear step lamps and the foot lamps (ground side) to turn the lamps ON and OFF.

Component Function Check

INFOID:0000000006164468

CAUTION:

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

• Battery saver output/power supply

• Front step lamp bulbs

• Foot lamp bulbs (if equipped)

1.

CHECK STEP LAMP OPERATION

CONSULT-III

1. Turn ignition switch ON.

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

3. While operating the test item, check that the front step lamps and foot lamps (if equipped) turn ON/OFF.

Is the inspection result normal?

YES

>> Step lamp circuit is normal.

NO

>> Refer to 

INL-22, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000006164469

Regarding Wiring Diagram information, refer to 

INL-39, "Wiring Diagram"

.

1.

CHECK STEP LAMP OUTPUT

CONSULT-III

1. Turn ignition switch ON.

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

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

ness connector and ground.

Is the inspection result normal?

YES

>> Step lamp control circuit is operating normally.

Fixed ON>>GO TO 3

Fixed OFF>> GO TO 2.

2.

CHECK STEP LAMP OPEN CIRCUIT

ON

: Step lamp ON

OFF

: Step lamp OFF

Connector

Terminal

—

STEP LAMP 

TEST

Voltage

M20

62

Ground

ON

0V

OFF

Battery voltage

ALLIA0414GB

STEP LAMP CIRCUIT

INL-23

< DTC/CIRCUIT DIAGNOSIS >

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1. Turn ignition switch OFF.

2. Disconnect BCM connector M20 and front step lamp and foot

lamp connectors (if equipped).

3. Check continuity between BCM harness connector M20 terminal

62 and step lamp connectors (B) terminal 2 and foot lamp con-

nectors (C) terminal 2 (if equipped).

Is the inspection result normal?

YES

>> Check step lamp or foot lamp for an open. If OK,

Replace BCM. Refer to 

BCS-53, "Removal and Installa-

tion"

. If NG, Replace step lamp or foot lamp. Refer to

INL-72, "Removal and Installation"

.

NO

>> Repair harness or connectors.

3.

CHECK STEP LAMP SHORT CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM connector M20 and front step lamp and foot

lamp connectors (if equipped).

3. Check continuity between BCM connector M20 terminal 62 and

ground.

Is the inspection result normal?

YES

>> Check step lamp or foot lamp for a short circuit. If OK,

Replace BCM. Refer to 

BCS-53, "Removal and Installa-

tion"

. If NG, replace step lamp or foot lamp. Refer to 

INL-72, "Removal and Installation"

.

NO

>> Repair the harness or connectors.

Connector Terminal

Connector

Terminal

Continuity

M20 (A)

62

Front step lamp LH

D11 (B)

2

Yes

Front step lamp RH

D109 (B)

2

Foot lamp LH (if 
equipped)

M99 (C)

2

Foot lamp RH (if 
equipped) 

M100 (C)

2

ALLIA0415GB

Connector

Terminal

—

Continuity

M20

62

Ground

No

ALLIA0416GB

INL-24

< DTC/CIRCUIT DIAGNOSIS >

CARGO LAMP CONTROL CIRCUIT

CARGO LAMP CONTROL CIRCUIT

Description

INFOID:0000000006164470

The BCM controls ground to the cargo lamp relay to turn the cargo lamp and tailgate cargo lamps (if equipped)

ON and OFF.

Diagnosis Procedure

INFOID:0000000006752637

Regarding Wiring Diagram information, refer to 

INL-39, "Wiring Diagram"

.

CAUTION:

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

• Fuse

• Cargo lamp bulbs

• Tailgate cargo lamp bulbs

1.

CHECK CARGO LAMP OPERATION

Check the cargo lamp and tailgate cargo lamps (if equipped) operation from the cargo lamp switch, the door

switches, and a keyfob (if equipped).
Is the cargo lamp and tailgate cargo lamps (if equipped) 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) or

DLK-28, "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-26, "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 M149 (B) terminal 1.

3. Check continuity between BCM connector M18 (A) terminal 31 and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-53, "Removal and Installation"

.

NO

>> Repair harness or connectors.

4.

CHECK CARGO LAMP RELAY

BCM

Cargo lamp switch

Continuity

Connector

Terminal

Connector

Terminal

M18 (A)

31

M149 (B)

1

Yes

AWLIA0807ZZ

Connector

Terminal

—

Continuity

M18 (A)

31

Ground

No