2004 INFINITI FX35 bat fl

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-141
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Revision: 2004 November 2004 FX35/FX45
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
Terminals
Voltage Rear combination lamp (+)
(Side marker)
(-)
Connector Terminal (Wire color)
RH B219
1 (R) Ground Battery voltage
LH B57
PKIA5239E

LT-144
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2004 November 2004 FX35/FX45
Tail Lamp Does Not OperateAKS007IN
1. CHECK STOP LAMP AND TURN SIGNAL LAMP
Make sure stop lamps and turn signal lamps are illuminated.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2. CHECK INPUT SIGNAL
Check voltage between rear combination lamp control unit harness
connector B65 terminal 2 (R) and ground.
OK or NG
OK >> Replace rear combination lamp control unit.
NG >> Repair harness or connector.
3. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear combination lamp control unit connector.
3. Check voltage between rear combination lamp control unit har-
ness connector B65 terminal 1 (GY) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK GROUND CIRCUIT
Check continuity between rear combination lamp control unit har-
ness connector B65 terminal 7 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
Terminal
(-) Condition Voltage (+)
ConnectorTerminal
(Wire color)
B65 2 (R) GroundLighting switch 1ST
position is ON.Battery voltage
Lighting switch 1ST
position is OFF.Approx. 0
PKIA5248E
1 (GY) – Ground : Battery voltage should exist.
SKIA5907E
7 (B) – Ground : Continuity should exist.
SKIA5908E

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
LT-161
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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

INTERIOR ROOM LAMP
LT-177
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Revision: 2004 November 2004 FX35/FX45
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-15, "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 4.
NG >> GO TO 6.
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.
5. CHECK INTERIOR ROOM LAMP CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M4 terminal
48 (PU/W) and interior room lamp harness connector R53 termi-
nal 1 (PU).
OK or NG
OK >> Replace BCM if turn signal lamps does not work after
setting the connector again. Refer to BCS-15, "
Removal
and Installation of BCM" .
NG >> Repair harness or connector.
LKIA0092E
1 (PU) – Ground : Battery voltage should exist.
PKIA5249E
Terminal
Condition Continuity
Interior room lamp
12 Interior room lamp switch is DOOR. Yes
Interior room lamp switch is OFF. No
PKIA7892E
48 (PU/W) – 1 (PU) : Continuity should exist.
PKIA5251E

LT-178
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
6. CHECK INTERIOR ROOM LAMP CIRCUIT
1. Disconnect BCM connector and interior room lamp connector.
2. Check continuity between BCM harness connector M4 terminal
41 (R/B) and interior room lamp harness connector R53 terminal
2 (R).
OK or NG
OK >> Replace BCM if turn signal lamps does not work after
setting the connector again. Refer to BCS-15, "
Removal
and Installation of BCM" .
NG >> Repair harness or connector.
Map Lamp Control Does Not OperateAKS007IK
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 5 , "
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 map lamp switch is in “DOOR” position, use active test to
make sure map lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-15, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.
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 4.
NG >> GO TO 6.41 (R/B) – 2 (R) : Continuity should exist.
PKIA5252E
SKIA5930E
Map lamp should operate.
LKIA0092E
2 (PU) – Ground : Battery voltage should exist.
PKIA5253E