Infiniti Q45. Manual - part 698

INTERIOR ROOM LAMP

LT-129

C

D

E

F

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L

M

A

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LT

Terminals and Reference Values for BCM

NKS0019T

Terminal 

No.

Wire 

color

Item

Measuring condition

Reference value

Ignition 

switch

Operation or condition

17

BR/Y

Data link RX

—

—

—

18

G/B

Data link TX

—

—

—

30

PU

Communication signal TX
(BCM-AV: Transmission)

—

—

—

31

LG

Communication signal RX
(AV-BCM: Receiving)

—

—

—

33

W

Rear LH door switch signal

OFF

Rear LH door switch

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

37

W/G

Front door switch (passenger 
side) signal

OFF

Front door switch (pas-
senger side) signal

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

56

B

Ground

—

—

—

60

L/OR

Ignition switch (ACC)

ACC

—

Battery voltage

67

G/W

Data line A-3

—

—

—

68

W/B

Ignition switch

ON

—

Battery voltage

69

PU/W

Key switch and key lock solenoid 
signal

OFF

Key withdrawn (OFF)

Approx. 0 V

Key inserted (ON)

Battery voltage

105

Y/L

Battery power supply

OFF

—

Battery voltage

110

SB

Ignition switch illumination signal

OFF

Turned OFF

Battery voltage

Turned ON

Approx. 0 V

113

B

Ground

—

—

—

129

G

Personal lamp switch signal

OFF

Personal lamp switch

One switch ON

Approx. 5 V

AUTO

Approx. 5 V

Both switch ON

Approx. 0 V

130

GY

Interior lamp illumination switch 
ON signal

OFF

Interior lamp illumination 
switch

ON

Approx. 0 V

AUTO

Approx. 5 V

OFF

Approx. 5 V

131

OR

Interior lamp illumination switch 
OFF signal

OFF

Interior lamp illumination 
switch

ON

Approx. 5 V

AUTO

Approx. 5 V

OFF

Approx. 0 V

133

BR

Map lamp LH signal

OFF

Turned OFF

Battery voltage

Dimming

Approx. 8 V

Turned ON

Approx. 0 V

137

L

Personal lamp RH signal

OFF

Turned OFF

Battery voltage

Dimming

Approx. 8 V

Turned ON

Approx. 0 V

138

Y

Personal lamp LH signal

OFF

Turned OFF

Battery voltage

Dimming

Approx. 8 V

Turned ON

Approx. 0 V

140

W

Map lamp RH signal

OFF

Turned OFF

Battery voltage

Dimming

Approx. 8 V

Turned ON

Approx. 0 V

LT-130

INTERIOR ROOM LAMP

Terminals and Reference Values for Driver Door Control Unit (LCU01) 

NKS0019U

Work Flow

NKS0019V

1.

Confirm the symptom or customer complaint.

2.

Understand system description. Refer to 

LT-117, "System Description"

 .

3.

Perform the preliminary check. Refer to 

LT-130, "Preliminary Check"

 .

4.

Does the door lock system operate normally? If YES, GO TO 5. If NO, GO TO Power door lock system

BL-44, "Symptom Chart"

  in “BODY LOCK & SECURITY SYSTEM (BL)” section.

5.

Find the cause of trouble following the trouble diagnosis chart by symptom and repair or replace as neces-
sary. Refer to 

LT-137, "Symptom Chart"

 .

6.

Does the total coordinated interior illumination operate normally? If YES, GO TO 7. If NO, GO TO 5.

7.

INSPECTION END

Preliminary Check

NKS0019W

SETTING CHANGE FUNCTION

●

Setting for each operation can be changed using CONSULT-II and a display unit.

CAUTION:

After the setting is changed, the new setting will be maintained even if the battery is disconnected.

142

W/R

Driver door switch signal

OFF

Driver door switch

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

143

W/L

Rear RH door switch signal

OFF

Rear RH door switch

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

Terminal 

No.

Wire 

color

Item

Measuring condition

Reference value

Ignition 

switch

Operation or condition

Terminal 

No.

Wire 

color

Item

Measuring condition

Reference value

Ignition 

switch

Operation or condition

6

G/Y

Door unlock sensor

OFF

ON (unlocked)

Approx. 0 V

OFF (locked)

Approx. 5 V

8

G/W

Data line A-3

—

 —

—

14

Y/G

Power source (circuit breaker)

OFF

—

Battery voltage

15

B

Ground

ON

—

Approx. 0 V

Item

Description

CONSULT-II

(Work support)

Display unit

(Setting of various vehicle 

conditions)

Factory 

setting

SET I/L LGC-D- UNLCK (CON-
SULT-II) Illuminate Interior When 
Unlocking Vehicle (display unit)

Selects ON-OFF of the interior 
lamp illumination at the time 
the driver door is unlocked.

ON

ON: Indicator ON

×

OFF

OFF: indicator OFF

—

SET INT- L LOGIC-TIM
(CONSULT-II)
Interior Lights Off Delay
 (display unit)

Selects interior lamp timer set 
time in four steps.

Mode 1 (off)

OFF: Display OFF

—

Mode 2 (15 seconds)

15 seconds: Display 15 sec.

—

Normal (30 seconds)

30 seconds: Display 30 sec.

×

Mode 3 (45 seconds)

45 seconds: Display 45 sec.

—

INTERIOR ROOM LAMP

LT-131

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LT

CHECK POWER SUPPLY AND GROUND CIRCUIT

1. 

CHECK FUSE

Check for blown fuses.

Refer to 

LT-123, "Wiring Diagram — INT/L —"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse

or fusible link. Refer to 

PG-2, "POWER SUPPLY ROUTING"

 .

2. 

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector and driver door control unit (LCU01)
connector.

3.

Check voltage between BCM and driver door control unit
(LCU01) harness connector, and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

Unit

Power source

Fuse and fusible link No.

BCM

Battery

3

Ignition switch ACC or ON

21

Ignition switch ON or START

1

Driver door control unit (LCU01)

Battery

H

Terminal

Ignition switch position

(+)

(

−

)

OFF

ON

Connector

Terminal

BCM (M4)

105

Ground

Battery voltage

Battery voltage

68

Approx. 0 V

Battery voltage

Driver door 
LCU (D8)

14 

Battery voltage

Battery voltage

PKIA5137E

LT-132

INTERIOR ROOM LAMP

3. 

CHECK GROUND CIRCUIT

Check continuity between BCM and driver door control unit (LCU01)
harness connector, and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

Terminal

Continuity

Connector

Terminal 

Ground

BCM (M4)

56 

Yes

 113 

Driver door LCU (D8)

15

PKIA5138E