Battery INFINITI FX35 2005 Service Manual

INTERIOR ROOM LAMP LT-163
C
D E
F
G H
I
J
L
M A
B
LT
Revision: 2005 July 2005 FX
When the key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated.
BCM detects that key has been removed, determines that interior room lamp and map lamp timer conditions
are met, and turns interior room lamp and map lamp ON for 30 seconds.
When driver door opens → closes, and key is not inserted in key switch (key switch OFF), BCM terminal 62
changes between 0V (door open) → 12V (door closed). BCM determines that conditions for interior room lamp
and map lamp operation are met and turns interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.

Driver door is locked [when locked keyfob or power window main switch (door lock and unlock switch),
door key cylinder switch].

Driver door is opened (driver door switch turns ON).

Ignition switch ON.
With Intelligent Key System
When the interior room lamp and map lamp switch is in DOOR position, and when all conditions below are
met, BCM performs timer control (maximum 30 second) for interior room lamp and map lamp ON/OFF.
In addition, when spot turns ON or OFF there is gradual brightening or dimming over 1 second.
Power is supplied

to 15A fuse [No. 22, located in fuse and fuse block (J/B)]

through key switch and ignition knob switch terminal 3.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
And not turned ignition knob switch, power will not be supplied to Intelligent Key unit.
Ground is supplied

from BCM terminal 22

to power window main switch (door lock and unlock switch) terminal 14.
At the time that driver door are opened, BCM detects that driver door is unlocked. It determines that interior
room lamp and map lamp timer operation conditions are met, and turns interior room lamp and map lamp ON
for 30 seconds.
Key is in ignition key cylinder (key switch ON), or turned ignition knob switch,
Power is supplied

through key switch and ignition knob switch terminal 4

to BCM terminal 37,

through key switch and ignition knob switch terminal 2

to intelligent key unit terminal 27.
When the key is removed from key switch (key switch OFF), power supply to BCM terminal 37 is terminated.
And turned ignition knob switch, power supply to Intelligent Key unit is terminated. BCM detects that key has
been removed, determines that interior room lamp and map lamp timer conditions are met, and turns interior
room lamp and map lamp ON for 30 seconds.
When driver door opens → closes, and key is not inserted in key switch (or not turned ignition knob switch),
BCM terminal 62 changes between 0V (door open) → 12V (door closed). BCM determines that conditions for
interior room lamp and map lamp operation are met and turns interior room lamp ON for 30 seconds.
Timer control is canceled under the following conditions.

Driver door is locked [when locked keyfob, power window main switch (door lock and unlock switch) or
door key cylinder switch].

Driver door is opened (driver door switch terns ON).

Ignition switch ON.
INTERIOR LAMP BATTERY SAVER CONTROL
If interior lamp is left “ON”, it will not be turned out even when door is closed.
BCM turns off interior lamp automatically to save battery 30 minutes after ignition switch is turned off.
BCM controls interior lamps listed below:

Luggage room lamp

Vanity mirror lamp

Map lamp

Interior room lamp

Personal lamp
After lamps turn OFF by battery saver system, lamps illuminate again when

LT-164
INTERIOR ROOM LAMP
Revision: 2005 July 2005 FX

signal from keyfob, or power window main switch (door lock and unlock switch) or key cylinder is locked or
unlocked,

door is opened or closed,

key is removed from ignition key cylinder or inserted in ignition key cylinder, or turned ignition knob switch.
Interior lamp battery saver control period can be changed by the function setting of CONSULT-II.

INTERIOR ROOM LAMP LT-175
C
D E
F
G H
I
J
L
M A
B
LT
Revision: 2005 July 2005 FX
Terminals and Reference Values for BCMAKS007FB
Terminal
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
1PU Ignition keyhole illumi-
nation signal OFF Door is locked. (SW OFF) Battery voltage
Door is unlocked. (SW ON) Approx. 0V
12 P/B Front door switch AS
signal OFF
Front door switch
AS ON (open) Approx. 0V
OFF (closed) Battery voltage
13 P/L Rear door switch RH
signal OFF
Rear door switch
RH ON (open) Approx. 0V
OFF (closed) Battery voltage
22 OR Power window switch
serial link ——
37 B/W Key-in detection
switch signal OFF Vehicle key is removed. Approx. 0V
Vehicle key is inserted. Battery voltage
38 W/L Ignition power supply ON — Battery voltage
39 L CAN − H— — —
40 R CAN − L— — —
41 R/B Battery saver output
signal OFF
30 minutes after ignition switch is turned to
OFF Approx. 0V
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. 0V
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
Interior door
switch:
DOOR position Any
door
switch ON (open) Approx. 0V
OFF (closed) Battery voltage
49 B Ground ON — Approx. 0V
52 B Ground ON — Approx. 0V
55 G Battery power supply OFF — Battery voltage
58 L Back door switch sig-
nal (Auto close motor) OFF Back door switch ON (open) Approx. 0V
OFF (closed) Battery voltage
62 W Front door switch DR
signal OFF
Front door switch
DR ON (open) Approx. 0V
OFF (closed) Battery voltage
63 P Rear door switch LH
signal OFF
Rear door switch
LH ON (open) Approx. 0V
OFF (closed) Battery voltage
PIIA2344J

LT-176
INTERIOR ROOM LAMP
Revision: 2005 July 2005 FX
How to Proceed With Trouble DiagnosisAKS007FC
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 1 5 9 , "
System Description" .
3. Perform Preliminary Check. Refer to LT- 1 7 6 , "
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 CheckAKS007FD
CHECK FOR POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Refer to LT- 1 6 7 , "
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, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
Check continuity between BCM and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Power source Fuse and fusible link No.
BCM Battery
M
22
Ignition switch ON or START position 1
Terminal Ignition switch position
(+) (-) OFF ON
Connector Terminal
(Wire color)
M4 42 (L/R)
Ground Battery voltage Battery voltage
55 (G) Battery voltage Battery voltage
M3 38 (W/L) Approx. 0V Battery voltage
PKIB5199E
Terminal Continuity
Connector Terminal (Wire color) Ground Yes
M4 49 (B)
52 (B)
PKIB3545E

LT-180
INTERIOR ROOM LAMP
Revision: 2005 July 2005 FX
Interior Room Lamp Control Does Not OperateAKS007FF
1. CHECK EACH SWITCH
Select “BCM” on CONSULT-II. With “INT LAMP” data monitor to
make sure switches listed in display item list turn ON-OFF linked
with switch operation. Refer to LT- 1 7 8 , "
Display Item List" for
switches and their functions.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. ACTIVE TEST
1. Select “BCM” on CONSULT-II. Select “INT LAMP” active test.
2. When interior room lamp switch is in DOOR position, use active test to make sure interior room lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-16, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.
3. CHECK INTERIOR ROOM LAMP INPUT
1. Turn ignition switch OFF.
2. Check voltage between interior room lamp harness connector R53 terminal 1 (PU) and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 4.
4. CHECK INTERIOR ROOM LAMP
1. Disconnect interior room lamp connector.
2. Check continuity between interior room lamp.
OK or NG
OK >> GO TO 5.
NG >> Replace Interior room lamp.
PKIB3532E
PKIA7641E
1 (PU) – Ground : Battery voltage.
PKIA5249E
Terminal Condition Continuity
Interior room lamp
12 Interior room lamp switch is DOOR. Yes
Interior room lamp switch is OFF or ON. No
PKIB3509E

LT-182
INTERIOR ROOM LAMP
Revision: 2005 July 2005 FX
3. CHECK MAP LAMP INPUT
1. Turn ignition switch OFF.
2. Check voltage between map lamp harness connector R52 termi- nal 2 (PU) and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 4.
4. CHECK MAP LAMP
1. Disconnect map lamp connector.
2. Check continuity between map lamp.
OK or NG
OK >> GO TO 5.
NG >> Replace Map lamp.
5. CHECK MAP LAMP CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M4 terminal 41 (R/B) and map lamp harness connector R52 terminal 3 (R).
OK or NG
OK >> Replace BCM if map lamp does not work after setting the connector again. Refer to BCS-16, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
6. CHECK MAP LAMP CIRCUIT
1. Disconnect BCM connector and map lamp connector.
2. Check continuity between BCM harness connector M4 terminal 48 (PU/W) and map lamp harness connector R52 terminal 2
(PU).
OK or NG
OK >> Replace BCM if map lamp does not work after setting the connector again. Refer to BCS-16, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector. 2 (PU) – Ground : Battery voltage.
PKIA5253E
Terminal
Condition Continuity
Map lamp
23 Map lamp switch is DOOR. Yes
Map lamp switch is OFF. No
PKIA6054E
41 (R/B) – 3 (R) : Continuity should exist.
PKIB3515E
48 (PU/W) – 2 (PU) : Continuity should exist.
PKIB3514E

INTERIOR ROOM LAMP LT-183
C
D E
F
G H
I
J
L
M A
B
LT
Revision: 2005 July 2005 FX
Personal Lamp Control Does Not OperateAKS007FG
1. CHECK REAR DOOR SWITCH
Select “BCM” on CONSULT-II. With “INT LAMP” data monitor to
make sure switch “DOOR SW-RR” and “DOOR SW-RL” turn ON-
OFF linked with rear door (RH and LH) operation.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning rear door switch.
2. CHECK PERSONAL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect personal lamp connector.
3. Open rear door.
4. Check continuity between personal lamp harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK PERSONAL LAMP INPUT
Check voltage between personal lamp harness connector and
ground.
OK or NG
OK >> Replace personal lamp. Refer to LT- 1 5 3 , "Removal and
Installation" .
NG >> GO TO 4.
PKIA7640E
Terminal
Continuity
Personal lamp
Ground
Connector Terminal (Wire color)
RH R55 1 (L) Ye s
LH R54 1 (P)
PKIA5257E
Terminal
Voltage
Personal lamp (+) (-)
Connector Terminal (Wire color) Ground
RH R55
2 (R) Battery voltage
LH R54
PKIA5258E

INTERIOR ROOM LAMP LT-185
C
D E
F
G H
I
J
L
M A
B
LT
Revision: 2005 July 2005 FX
3. CHECK IGNITION KEY HOLE ILLUMINATION INPUT
1. Turn ignition switch OFF.
2. Check voltage between ignition key hole illumination harness connector M24 terminal 1 (R/B) and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 6.
4. CHECK IGNITION KEY HOLE ILLUMINATION BULB
1. Disconnect ignition key hole illumination connector.
2. Check continuity between ignition key hole illumination terminals 1 and 2.
OK or NG
OK >> GO TO 5.
NG >> Replace ignition key hole illumination. Refer to LT- 1 5 5 ,
"Bulb Replacement, Removal and Installation" .
5. CHECK IGNITION KEY HOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M3 terminal 1 (PU) and ignition key hole illumination harness connector M24
terminal 2 (PU).
OK or NG
OK >> Replace BCM if ignition key hole illumination does not work after setting the connector again. Refer to BCS-16,
"Removal and Installation of BCM" .
NG >> Repair harness or connector.
6. CHECK IGNITION KEY HOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector and ignition key hole illumination connector.
2. Check continuity between BCM harness connector M4 terminal 41 (R/B) and ignition key hole illumination harness connector
M24 terminal 1 (R/B).
OK or NG
OK >> Replace BCM if ignition key hole illumination does not work after setting the connector again. Refer to BCS-16,
"Removal and Installation of BCM" .
NG >> Repair harness or connector. 1 (R/B) – Ground : Battery voltage.
PKIA5260E
1 – 2 : Continuity should exist.
PKIA7789E
1 (PU) – 2 (PU) : Continuity should exist.
PKIA7643E
41 (R/B) – 1 (R/B) : Continuity should exist.
PKIB3520E

LT-186
INTERIOR ROOM LAMP
Revision: 2005 July 2005 FX
All Step Lamps Do Not OperateAKS007FI
1. CHECK EACH DOOR SWITCH
Select “BCM” on CONSULT-II. With “INT LAMP” data monitor to
make sure switches listed below turn ON-OFF linked with switch
operation.
OK or NG
OK >> GO TO 2.
NG >> Inspect malfunctioning switch system.
2. CHECK STEP LAMP INPUT
1. Turn ignition switch OFF.
2. Check voltage between front door driver side step lamp harness connector D9 terminal 1 (R) and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and front door driver side step lamp connector.
2. Check continuity between BCM harness connector M4 terminal 47 (Y/R) and front door driver side step lamp harness connector
D9 terminal 2 (SB).
OK or NG
OK >> Replace BCM if step lamp does not work after setting the connector again. Refer to BCS-16, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
Switch name CONSULT screen
Driver side door switch DOOR SW - DR
Passenger side door switch DOOR SW - AS
Rear RH side door switch DOOR SW - RR
Rear LH side door switch DOOR SW - RL
PKIB3532E
1 (R) – Ground : Battery voltage.
PKIA5264E
47 (Y/R) – 2 (SB) : Continuity should exist.
PKIB3522E

INTERIOR ROOM LAMP LT-187
C
D E
F
G H
I
J
L
M A
B
LT
Revision: 2005 July 2005 FX
4. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and front door driver side step lamp connector.
2. Check continuity between BCM harness connector M4 terminal 41 (R/B) and front door driver side step lamp harness connector
D9 terminal 1 (R).
OK or NG
OK >> Replace BCM if step lamp does not work after setting the connector again. Refer to BCS-16, "
Removal and
Installation of BCM" .
NG >> Repair harness or connector.
All Interior Room Lamps Do Not OperateAKS007FJ
1. CHECK POWER SUPPLY CIRCUIT
1. All interior room lamps switch are OFF.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M4 terminal 41 (R/B) and ground.
OK or NG
OK >> Repair harness or connector. In a case of making a short circuit, be sure to disconnect cable from the nega-
tive terminal repairing harness, and then reconnect.
NG >> Replace BCM. Refer to BCS-16, "
Removal and Installa-
tion of BCM" .
Bulb ReplacementAKS007FK
INTERIOR ROOM LAMP
1. Remove interior room lamp. Refer to LT- 1 8 8 , "Removal and
Installation" .
2. Insert a suitable tool and remove lens.
3. Remove bulb.
4. Installation is the reverse order of removal.
MAP LAMP
Refer to LT- 1 5 2 , "Bulb Replacement" in “MAPLAMP”.
PERSONAL LAMP
Refer to LT- 1 5 3 , "Bulb Replacement" in “PERSONAL LAMP”.
41 (R/B) – 1 (R) : Continuity should exist.
PKIB3523E
41 (R/B) – Ground : Battery voltage.
PKIB3524E
Interior room lamp :12V - 10W
PKIB3637E