Infiniti FX35 / FX45. Manual — part 814

INTERIOR ROOM LAMP

LT-151

< SERVICE INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

LT

N

O

P

TKWM4319E

LT-152

< SERVICE INFORMATION >

INTERIOR ROOM LAMP

TKWM4320E

INTERIOR ROOM LAMP

LT-153

< SERVICE INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

LT

N

O

P

Terminal and Reference Value for BCM

INFOID:0000000001328410

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

1

PU

Ignition keyhole illumi-
nation signal

OFF

Ignition keyhole
illumination

Illuminated

Battery voltage

Not illuminated

Approx. 0 V

12

P/B

Front door switch (pas-
senger) signal

OFF

Front door switch
(passenger side)

ON (open)

Approx. 0 V

OFF (closed)

Approx. 7.5 - 8.0 V

13

P/L

Rear door switch RH
signal

OFF

Rear door switch
RH

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

22

OR

Power window switch
serial link

—

Power window
main switch (door
lock and unlock
switch) and power
window sub-
switch (front pas-
senger side) (door
lock and unlock
switch)

Lock or unlock switch
ON
NOTE:
Approx. 10 seconds
after door lock and un-
lock switch (driver side
and passenger side) is
turned “LOCK” or “UN-
LOCK”.

Approx. 9.0 - 9.5 V

OFF

Battery voltage

37

B/W

Key-in detection switch
signal

OFF

Vehicle key is removed.

Approx. 0 V

Vehicle key is inserted.

Battery voltage

38

W/L

Ignition power supply

ON

—

Battery voltage

39

L

CAN

−

H

—

—

—

40

P

CAN

−

L

—

—

—

41

R/B

Battery saver output
signal

OFF

30 minutes after ignition switch is turned to
OFF

Approx. 0 V

ON

—

Battery voltage

42

L/R

Battery power supply

OFF

—

Battery voltage

47

Y/R

Step lamp signal

OFF

Any door is open (ON)

Approx. 0 V

All doors are closed (OFF)

Battery voltage

48

PU/W

Interior room lamp,
map lamp, front door
inside handle and rear
door inside handle illu-
mination output signal

OFF

Any door switch

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

49

B

Ground

ON

—

Approx. 0 V

52

B

Ground

ON

—

Approx. 0 V

55

G

Battery power supply

OFF

—

Battery voltage

58

L

Back door switch sig-
nal

OFF

Back door closure
motor (door
switch)

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

SKIB3419J

PKIC0930E

LT-154

< SERVICE INFORMATION >

INTERIOR ROOM LAMP

How to Proceed with Trouble Diagnosis

INFOID:0000000001328411

1.

Confirm the symptom or customer complaint.

2.

Understand operation description and function description. Refer to

LT-138, "System Description"

.

3.

Perform Preliminary Check. Refer to

LT-154, "Preliminary Check"

.

4.

Check symptom and repair or replace the cause of malfunction.

5.

Does interior room lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END

Preliminary Check

INFOID:0000000001328412

CHECK FOR POWER SUPPLY AND GROUND CIRCUIT

1.

CHECK FUSES

Check for blown fuses.

Refer to

LT-145, "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-

3

.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

OK or NG

62

W

Front door switch (driv-
er side) signal

OFF

Front door switch
(driver side)

ON (open)

Approx. 0 V

OFF (closed)

Approx. 7.0 - 7.5 V

63

P

Rear door switch LH
signal

OFF

Rear door switch
LH

ON (open)

Approx. 0 V

OFF (closed)

Battery voltage

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

PKIB4960J

Unit

Power source

Fuse and fusible link No.

BCM

Battery

M

22

Ignition switch ON or START position

1

(+)

(-)

Ignition switch position

BCM con-

nector

Terminal

OFF

ON

M3

38

Ground

Approx. 0 V

Battery voltage

M4

42

Battery voltage

Battery voltage

55

Battery voltage

Battery voltage

PKIA7520E