Nissan Frontier. Manual - part 937

ILLUMINATION CONTROL SYSTEM

INL-75

< SYSTEM DESCRIPTION >

[WITHOUT POWER DOOR LOCKS]

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Component Parts Location

INFOID:0000000009480170

Component Description

INFOID:0000000009480171

1.

IPDM E/R E122, E124

2.

Combination switch (lighting and turn 
signal switch) M28

3.

Combination meter M24

4.

Illumination control switch (built into 
combination meter)

5.

BCM M18, M20 (view with lower instru-
ment panel LH removed)

WKIA5029E

Part name

Description

BCM

The BCM monitors the lighting switch position with the combina-
tion switch reading function. The BCM requests, via CAN commu-
nication, that the IPDM E/R activate the tail lamp relay. 

IPDM E/R

The IPDM E/R activates the tail lamp relay based on inputs re-
ceived from the BCM via the CAN communication network. 

Combination meter (illumination control switch)

The illumination control switch is a part of the combination meter. 
The combination meter controls illumination intensity by varying 
ground to the illumination lamps based on the illumination control 
switch position. 

Combination switch (lighting and turn signal switch)

The combination switch (lighting and turn signal switch) provides 
input to the BCM about the lighting switch position. 

INL-76

< SYSTEM DESCRIPTION >

[WITHOUT POWER DOOR LOCKS]

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

COMMON ITEM
COMMON ITEM : CONSULT Function (BCM - COMMON ITEM)

INFOID:0000000010229282

APPLICATION ITEM

CONSULT performs the following functions via CAN communication with BCM.

SYSTEM APPLICATION

BCM can perform the following functions.

INT LAMP

Direct Diagnostic Mode

Description

ECU Identification

The BCM part number is displayed.

Self Diagnostic Result

The BCM self diagnostic results are displayed.

Data Monitor

The BCM input/output data is displayed in real time.

Active Test

The BCM activates outputs to test components.

Work support

The settings for BCM functions can be changed.

Configuration

• The vehicle specification can be read and saved.
• The vehicle specification can be written when replacing BCM.

CAN Diag Support Mntr

The result of transmit/receive diagnosis of CAN communication is displayed.

System

Sub System

Direct Diagnostic Mode

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Door lock

DOOR LOCK

×

×

×

Rear window defogger

REAR DEFOGGER

×

×

Warning chime

BUZZER

×

×

Interior room lamp timer

INT LAMP

×

×

×

Remote keyless entry system

MULTI REMOTE ENT

×

×

×

Exterior lamp

HEAD LAMP

×

×

×

Wiper and washer

WIPER

×

×

×

Turn signal and hazard warning lamps FLASHER

×

×

Air conditioner

AIR CONDITIONER

×

Combination switch

COMB SW

×

BCM

BCM

×

×

×

×

×

Immobilizer

IMMU

×

×

×

Interior room lamp battery saver

BATTERY SAVER

×

×

×

Vehicle security system

THEFT ALM

×

×

×

RAP system

RETAINED PWR

×

×

×

Signal buffer system

SIGNAL BUFFER

×

×

TPMS

AIR PRESSURE MONITOR

×

×

×

×

Panic alarm system

PANIC ALARM

×

DIAGNOSIS SYSTEM (BCM)

INL-77

< SYSTEM DESCRIPTION >

[WITHOUT POWER DOOR LOCKS]

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INT LAMP : CONSULT Function (BCM - INT LAMP)

INFOID:0000000010229283

DATA MONITOR

ACTIVE TEST

WORK SUPPORT

* : Initial setting

Monitor Item [Unit]

Description

IGN ON SW [On/Off]

Indicates condition of ignition switch ON position.

KEY ON SW [On/Off]

Indicates condition of key switch.

DOOR SW-DR [On/Off]

Indicates condition of front door switch LH.

DOOR SW-AS [On/Off]

Indicates condition of front door switch RH.

DOOR SW-RR [On/Off]

Indicates condition of rear door switch RH.

DOOR SW-RL [On/Off]

Indicates condition of rear door switch LH.

KEY CYL LK-SW [On/Off]

Indicates condition of lock signal from door key cylinder switch.

KEY CYL UN-SW [On/Off]

Indicates condition of unlock signal from door key cylinder switch.

CDL LOCK SW [On/Off]

Indicates condition of lock signal from door lock and unlock switch.

CDL UNLOCK SW [On/Off]

Indicates condition of unlock signal from door lock and unlock switch.

KEYLESS LOCK [On/Off]

Indicates condition of lock signal from keyfob.

KEYLESS UNLOCK [On/Off]

Indicates condition of unlock signal from keyfob.

Test Item

Description

IGN ILLUM

This test is able to check ignition keyhole illumination operation [Off/On].

INT LAMP

This test is able to check interior room lamp operation [Off/On].

Support Item

Setting

Description

SET I/L D-UNLCK INTCON

Off

Interior room lamp timer function OFF.

On*

Interior room lamp timer function ON.

ROOM LAMP ON TIME SET

MODE7

0 sec.

Sets the interior room lamp gradual brightening time.

MODE6

5 sec.

MODE5

4 sec.

MODE4

3 sec.

MODE3

2 sec.

MODE2*

1 sec.

MODE1

0.5 sec.

ROOM LAMP OFF TIME SET

MODE7

0 sec.

Sets the interior room lamp gradual dimming time.

MODE6

5 sec.

MODE5

4 sec.

MODE4

3 sec.

MODE3

2 sec.

MODE2*

1 sec.

MODE1

0.5 sec.

INL-78

< DTC/CIRCUIT DIAGNOSIS >

[WITHOUT POWER DOOR LOCKS]

INTERIOR ROOM LAMP

DTC/CIRCUIT DIAGNOSIS

INTERIOR ROOM LAMP

Diagnosis Procedure

INFOID:0000000009480174

Regarding Wiring Diagram information, refer to 

INL-95, "Wiring Diagram - Without Power Door Lock System"

.

CAUTION:

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

• Fuse

• Interior room lamp bulbs

1.

CHECK INTERIOR ROOM LAMP POWER SUPPLY

Check voltage between interior room lamp connectors and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair the harness or connectors.

2.

CHECK INTERIOR ROOM LAMP GROUND

1. Turn ignition switch OFF.

2. Disconnect BCM connectors M18, M19, room lamp 2nd row connector R10 and front room/map lamp

connector R9.

3. Check continuity between interior room lamp connectors and ground while opening/closing the door.

Is the inspection result normal?

YES

>> Replace the interior room lamp. Refer to 

INL-63, "Removal and Installation"

.

NO

>> GO TO 3

3.

CHECK DOOR SWITCHES

Check the door switches. Refer to 

INL-79, "Component Inspection (Door Switch)"

.

Is the inspection result normal?

YES

>> • Crew cab models, repair the harness or connectors between the interior room lamp and the

door switches.

• King cab models, GO TO 4

NO

>> Replace the door switch.

4.

CHECK DOOR SWITCH GROUND (KING CAB)

Component

(+)

(-)

Voltage

Connector

Terminal

Room lamp 2nd row 

R10

2

Ground

Battery voltage

Front room/map lamp

R9

1

Component

(+)

(-)

Door states

Continuity

Connector

Terminal

Room lamp 2nd row 

R10

1

Ground

Open

Yes

Closed

No

Front room/map lamp

R9

2

Open

Yes

Closed

No