2004 INFINITI FX35 ignition

LT-158
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
When inserted the key plate to key switch, power is supplied (with intelligent key system)

through the key switch and ignition knob switch terminal 4

to BCM (body control module) terminal 37.
When moved the ignition knob switch, power is supplied (with intelligent key system)

through the ignition knob switch terminal 2

to intelligent key unit terminal 27.
With the ignition switch in the ON or START position, power is supplied

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds terminals M35, M45 and M85.
When the driver side door is opened, ground is supplied

through case ground of door switch driver side

to BCM (body control module) terminal 62.
When the passenger side door is opened, ground is supplied

through case ground of door switch passenger side

to BCM (body control module) terminal 12.
When the rear door LH is opened, ground is supplied

through case ground of door switch rear door LH

to BCM (body control module) terminal 63, and

to personal lamp LH terminal 1.
When the rear door RH is opened, ground is supplied

through case ground of door switch rear door RH

to BCM (body control module) terminal 13, and

to personal lamp RH terminal 1.
When the driver side door is unlocked by the door lock and unlock switch, BCM (body control module)
receives a ground signal

through grounds terminals M35, M45 and M85

to power window main switch terminal 17 (door lock and unlock switch) or front power window (passenger
side) terminal 11 (door lock and unlock switch)

from power window main switch terminal 14 (door lock and unlock switch) or front power window (passen-
ger side) terminal 16 (door lock and unlock switch)

to BCM (body control module) terminal 22.
When the front driver side door is unlocked by the driver side door lock assembly (door key cylinder switch),
BCM (body control module) receives a ground signal

through grounds M35, M45 and M85

to front door lock assembly (driver side) (door key cylinder switch) terminal 5

from front door lock assembly (driver side) (door key cylinder switch) terminal 6

to power window main switch terminal 6 (door lock and unlock switch)

from power window main switch terminal 14 (door lock and unlock switch)

to BCM (body control module) terminal 22.
When a signal, or combination of signals is received by BCM (body control module), ground is supplied

through BCM (body control module) terminal 48

to interior room lamp terminal 1(without DVD player),

to map lamp terminal 2 and

to front door inside handle illumination (driver side and passenger side) terminal 2
With power and supplied, the interior lamp illuminates.

INTERIOR ROOM LAMP
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SWITCH OPERATION
When driver door switch is ON (door is opened), ground is supplied

through BCM terminal 1

to ignition keyhole illumination terminal 2.
And power is supplied

from BCM terminal 41

to ignition keyhole illumination terminal 1.
When any door switch is ON (door is opened), ground is supplied

through BCM terminal 47

to front step lamp driver side and passenger side, rear step lamp (LH and RH)

through rear door switch terminal 1

to personal lamp (LH and RH) terminal 1.
And power is supplied

from BCM terminal 41

to every step lamp terminal 1, and personal lamp (LH and RH) terminal 2.
When map lamp switch is ON, ground is supplied

through grounds M35, M45 and M85

to map lamp terminal 1.
And power is supplied

from BCM terminal 41

to map lamp terminal 3.
When vanity mirror lamp (driver side and passenger side) is ON, ground is supplied

through grounds M35, M45 and M85

to vanity mirror lamp (driver side and passenger side) terminal 2.
And power is supplied

from BCM terminal 41

to vanity mirror lamp (driver side and passenger side) terminal 1.
When luggage room lamp (back door side) is ON, ground is supplied

through grounds B15 and B45

to luggage room lamp (back door side) terminal 3.
And power is supplied

from BCM terminal 41

to luggage room lamp (body side and back door side) terminal 2.
ROOM LAMP TIMER OPERATION
Without Intelligent Key System
When interior room lamp and map lamp switch is in DOOR position, and when all conditions below are met,
BCM performs timer control (maximum 30 seconds) 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 block (J/B)]

through key switch terminal 2.
Key is removed from ignition key cylinder (key switch OFF), power will not be supplied to BCM terminal 37.
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 the interior room lamp and map lamp
ON for 30 seconds.
Key is in ignition key cylinder (key switch ON),
Power is supplied

LT-160
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45

through key switch terminal 1

to BCM terminal 37.
When 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 the interior room lamp and map lamp ON for 30 seconds.
When driver door opens → closes, and the key is not inserted in the key switch (key switch OFF), BCM termi-
nal 62 changes between 0V (door open) → 12V (door closed). The BCM determines that conditions for inte-
rior room lamp and map lamp operation are met and turns the 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 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 the 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 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 the interior
room lamp and map lamp ON for 30 seconds.
When driver door opens → closes, and the key is not inserted in the key switch (or not turned ignition knob
switch), BCM terminal 62 changes between 0V (door open) → 12V (door closed). The determines that condi-
tions for interior room lamp and map lamp operation are met and turns the interior room lamp ON for 30 sec-
onds.
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 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
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Interior room lamp

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

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.

LT-172
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Values for BCMAKS007FB
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
1PUIgnition keyhole illumina-
tion signalOFFDoor is locked. (SW OFF) Battery voltage
Door is unlocked. (SW ON) Approx. 0V
12 P/B Front door switch AS signal OFFFront door switch
ASON (open) Approx. 0V
OFF (closed) Battery voltage
13 P/L Rear door switch RH signal OFFRear door switch
RHON (open) Approx. 0V
OFF (closed) Battery voltage
22 O/RPower window switch serial
link——
37 B/WKey-in detection switch sig-
nalOFFVehicle 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 signalOFF30 minutes after ignition switch is
turned to OFFApprox. 0V
ON — Battery voltage
42 L/R Battery power supply OFF — Battery voltage
47 Y/R Step lamp signal OFFAny door is open (ON) Approx. 0V
All doors are closed (OFF) Battery voltage
48 PU/WInterior room lamp, map
lamp and front door inside
handle illumination output
signalOFFInterior door
switch:
DOOR positionAny
door
switchON
(open)Approx. 0V
OFF
(closed)Battery voltage
49
52B Ground ON — Approx. 0V
55 G Battery power supply OFF — Battery voltage
58 LBack door switch signal
(Auto close motor)OFF Back door switchON (open) Approx. 0V
OFF (closed) Battery voltage
62 W Front door switch DR signal OFFFront door switch
DRON (open) Approx. 0V
OFF (closed) Battery voltage
63 P Rear door switch LH signal OFFRear door switch
LHON (open) Approx. 0V
OFF (closed) Battery voltage
PIIA2344J

INTERIOR ROOM LAMP
LT-173
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Revision: 2004 November 2004 FX35/FX45
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 7 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 1 7 3 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the 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 BCM fuses.
Refer to LT-164, "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 >> Check harness for open or short between BCM and fuse.
3. CHECK GROUND CIRCUIT
Check continuity between BCM and ground.
OK or NG
OK >> INSPECTION END
NG >> Check harness ground circuit.
Unit Power source Fuse and fusible link No.
BCMBatteryM
22
Ignition switch ON or START position 1
Terminals Ignition switch position
(+)
(-) OFF ON
Connector Terminal (Wire color)
M442 (L/R)
GroundBattery voltage Battery voltage
55 (G) Battery voltage Battery voltage
M3 38 (W/L) 0V Battery voltage
PKIA5271E
Terminals
Continuity
Connector Terminal (Wire color)
M449 (B)
Ground Yes
52 (B)
PKIA5191E

LT-174
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
CONSULT-II FunctionsAKS007FE
CONSULT-II has a display function for work support, self-diagnosis, data monitor, and active test for each part
by combining data receiving and sending via the communication line from BCM.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, refer to GI-40, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnosis part Check item, diagnosis mode Description
INTERIOR LAMPWork support Changes the setting for each function.
Data monitor Displays BCM input data in real time.
Active test Operation of electrical loads can be checked by sending driving signal to them.
PBIB1503E
SKIA3098E
PKIA5222E

INTERIOR ROOM LAMP
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4. Touch “INT LAMP” on “SELECT TEST ITEM” screen.
WORK SUPPORT
Operation Procedure
1. Touch “INT LAMP” on “SELECT TEST ITEM” screen.
2. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
3. Touch “SET I/L D− UNLCK INTCON” on “SELECT WORK ITEM” screen.
4. Touch “START”.
5. Touch “CHANGE SETT”.
6. The setting will be changed and “CUSTOMIZING COMPLETED ” will be displayed.
7. Touch “END”.
Display Item List
Reference between “MODE” and “TIME” for “TURN ON/OFF”
DATA MONITOR
Operation Procedure
1. Touch “INT LAMP” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on “DATA MONITOR” screen.
4. Touch “START”.
5. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is
selected, all the items will be monitored.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop
recording, touch “STOP”.
Display Item List
PKIA5226E
Item Description CONSULT-II
SET I/L D−UNLCK INTCONThe 30 seconds glowing function the interior room lamps and the ignition key-
hole illumination can be selected when driver door is released (unlocked). ON/OFF
TURN ON TIMEThe time in order to escalate illumination can be adjusted when the interior
room lamps and the ignition keyhole illumination is turned on.MODE 1 – 7
TURN OFF TIMEThe time in order to diminish illumination can be adjusted when the interior
room lamps and the ignition keyhole illumination is turned off.MODE 1 – 7
MODE 1 2 3 4 5 6 7
Time (sec.) 0.5 1 2 3 4 5 0
All signals Monitors all the signals.
Selection from menu Selects and monitors the individual signal.
Monitor item Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from the ignition switch signal.
KEY ON SW “ON/OFF” Displays “Key inserted (ON)/key removed (OFF)” status judged from the key switch signal.