Infiniti M45 (Y34). Manual - part 658

INTERIOR ROOM LAMP

LT-139

C

D

E

F

G

H

I

J

L

M

A

B

LT

Terminals and Reference Value for BCM

AKS002GJ

Terminal 

No.

Wire 

color

Signal description

Measuring condition

Reference value

Ignition 

switch

Operation or condition

17

BR/Y

Data link RX

—

—

—

18

P

Data link TX

—

—

—

30

PU

Communication signal TX
(BCM-AV: Transmission)

—

—

—

31

LG

Communication signal RX
(AV-BCM: Receiving)

—

—

—

33

W

Door lock assembly rear LH 
(door switch) signal

OFF

Door lock assembly 
rear LH (door switch) 

ON (open)

Approx. 0V

OFF (closed)

Battery voltage

37

LG

Front door switch (passenger 
side) signal

OFF

Front door switch 
(passenger side)

ON (open)

Approx. 0V

OFF (closed)

Battery voltage

56

B

Ground

—

—

Approx. 0V

60

L/OR

Ignition switch ACC or ON

ACC

—

Battery voltage

67

G/W

DATA line A-3

—

—

—

68

W/B

Ignition switch ON or START

ON

—

Battery voltage

69

PU/W

key switch signal

OFF

Key withdrawn (OFF)

Approx. 0V

Key inserted (ON)

Battery voltage

105

Y/L

Battery power supply

OFF

—

Battery voltage

110

OR

Ignition key hole illumination sig-
nal

OFF

Turned OFF

Battery voltage

Turned ON

Approx. 0V

113

B

Ground

—

—

Approx. 0V

129

G

Personal lamp switch signal

OFF

Personal lamp switch

One switch ON

5V or more

AUTO

5V or more

Both switch ON

Approx. 0V

130

W/L

Interior lamp switch ON signal

OFF

Room lamp switch

ON

Approx. 0V

AUTO

5V or more

OFF

5V or more

131

G/Y

Interior lamp switch OFF signal

OFF

Room lamp switch

ON

5V or more

AUTO

5V or more

OFF

Approx. 0V

133

Y/R

Map lamp LH signal

OFF

Turned OFF

Battery voltage

Dimming

8V or more

Turned ON

Approx. 0V

137

Y/G

Personal lamp RH signal

OFF

Turned OFF

Battery voltage

Dimming

8V or more

Turned ON

Approx. 0V

138

G/R

Personal lamp LH signal

OFF

Turned OFF

Battery voltage

Dimming

8V or more

Turned ON

Approx. 0V

140

Y/B

Map lamp RH signal

OFF

Turned OFF

Battery voltage

Dimming

8V or more

Turned ON

Approx. 0V

LT-140

INTERIOR ROOM LAMP

Terminals and Reference Value for Driver Door Control Unit (LCU) 

AKS002GK

Work Flow

AKS002GL

1.

Confirm the symptom or customer complaint.

2.

Understand system description. Refer to 

LT-128, "System Description"

 .

3.

Perform the preliminary check. Refer to 

LT-140, "Preliminary Check"

 .

4.

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

BL-30, "Work Flow"

  in BL

section.

5.

Find the cause of trouble following the malfunction diagnosis chart by symptom and repair or replace as
necessary. Refer to 

LT-146, "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

AKS002GM

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

R/Y

Front door switch (driver side) 
signal

OFF

Front door switch 
(driver side)

ON (open)

Approx. 0V

OFF (closed)

Battery voltage

143

W/L

Door lock assembly rear RH 
(door switch) signal

OFF

Door lock assembly 
rear RH (door switch) 

ON (open)

Approx. 0V

OFF (closed)

Battery voltage

Terminal 

No.

Wire 

color

Signal description

Measuring condition

Reference value

Ignition 

switch

Operation or condition

Terminal No.

Wire color

Item

Condition

Reference value

6

G/Y

Door unlock sensor

OFF (Locked) 

→

 ON (unlocked)

5V 

→

 0V

8

G/W

Data line A-3

 —

—

14

Y/G

Power source (PTC)

—

Battery voltage

15

B

Ground

—

Approx. 0V

Item

Description

CONSULT-II

(Work support)

Display unit

(Setting of various vehicle 

conditions)

Factory 

setting

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.

—

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

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

ON

ON: Indicator ON

×

OFF

OFF: indicator OFF

—

INTERIOR ROOM LAMP

LT-141

C

D

E

F

G

H

I

J

L

M

A

B

LT

INSPECTION FOR POWER AND GROUND CIRCUIT

1. 

CHECK FUSE

Check if any of the following fuses in BCM are blown.

Refer to 

LT-133, "Wiring Diagram — ROOM/L —"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. 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 connector.

3.

Check voltage between BCM harness connector M4 terminals and ground.

4.

Check voltage between driver door control unit harness connec-
tor D8 terminal 14 (Y/G) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Check the following.

●

Harness for open or short between BCM and fuse

●

Harness for open or short between driver door control
unit and fusible link

Unit

Power source

Fuse No.

BCM

Battery

3

8

Ignition switch ACC or ON position

21

Ignition switch ON or START position

1

Terminals

Ignition switch position

(+)

(-)

OFF

ACC

ON

Connector

Terminal 

(Wire color)

M4

105 (Y/L)

Ground

Battery 
voltage

Battery 
voltage

Battery 
voltage

68 (W/B)

0V

0V

Battery 
voltage

60 (L/OR)

0V

Battery 
voltage

Battery 
voltage

14 (Y/G) - Ground

: Battery voltage should exist.

PKIA5948E

PKIA5949E

LT-142

INTERIOR ROOM LAMP

3. 

CHECK GROUND CIRCUIT

1.

Check continuity between BCM harness connector M4 terminals
56 (B), 113 (B) and ground.

2.

Check continuity between driver door control unit harness con-
nector D8 terminal 15 (B) and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness.

CONSULT-II Function

AKS002GN

●

CONSULT-II has the display function for the work support, data monitor and active test for each part by
combining data receiving and sending via the communication line from the BCM.

CONSULT-II BASIC OPERATION PROCEDURE

1.

With ignition switch OFF, connect “CONSULT-II” and “CON-
SULT-II CONVERTER” to data link connector, then turn ignition
switch ON.

Terminals

Continuity

Connector

Terminal (Wire color)

M4

56 (B)

Ground

Yes

113 (B)

15 (B) - Ground

: Continuity should exist.

PKIA5950E

PKIA5951E

IVMS diagnosis position

Diagnosis mode

Description

Interior illumination

Work support

Changes setting of each function.

Data monitor

Displays input data of the BCM and each LCU in real-time.

Active test

Operation of electrical loads can be checked by sending driving signal to them.

BCM part number

Displays BCM part No.

PKIA5840E