battery INFINITI FX35 2004 Service Manual

INTERIOR ROOM LAMP
LT-161
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Revision: 2004 November 2004 FX35/FX45

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

LT-180
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
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 the rear door.
4. When personal lamp switch is in “DOOR” position, check conti-
nuity between personal lamp harness connector R54 terminal 1
(P), R55 terminal 1 (L) 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 R54 and
R55 terminal 2 (R) and ground.
OK or NG
OK >> Replace personal lamp. Refer to LT- 1 5 1 , "Removal and
Installation" .
NG >> GO TO 4.
4. CHECK PERSONAL LAMP CIRCUIT
1. Disconnect BCM connector.
2. Check continuity between BCM harness connector M4 terminal
41 (R/B) and personal lamp harness connector R54 and R55
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.
SKIA5930E
1 (P), 1 (L) – Ground : Continuity should exist.
PKIA5257E
2 (R) – Ground : Battery voltage should exist.
PKIA5258E
41 (R/B) – 2 (R) : Continuity should exist.
PKIA5259E

INTERIOR ROOM LAMP
LT-181
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Revision: 2004 November 2004 FX35/FX45
Ignition key Hole illumination Control Does Not OperateAKS007FH
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”.
2. Select “IGN ILLUM” active test to make sure lamp operates.
OK or NG
OK >> Replace BCM. Refer to BCS-15, "Removal and Installa-
tion of BCM" .
NG >> GO TO 3.
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 terminal
1 and 2.
OK or NG
OK >> GO TO 5.
NG >> Replace ignition key hole illumination. Refer to LT- 1 5 3 ,
"Bulb Replacement, Removal and Installation" .
SKIA5930E
Ignition key hole illumination should operate.
SKIA3992E
1 (R/B) – Ground : Battery voltage should exist.
PKIA5260E
1 – 2 : Continuity should exist.
PKIA7894E

LT-182
INTERIOR ROOM LAMP
Revision: 2004 November 2004 FX35/FX45
5. CHECK IGNITION KEY HOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector and key hole illumination connector.
2. Check continuity between BCM harness connector M3 terminal
1 (PU) and key hole illumination harness connector M24 termi-
nal 2 (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.
6. CHECK IGNITION KEY HOLE ILLUMINATION CIRCUIT
1. Disconnect BCM connector and key hole illumination connector.
2. Check continuity between BCM harness connector M4 terminal
41 (R/B) and key hole illumination harness connector M24 termi-
nal 1 (R/B).
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.
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 4.1 (PU) – 2 (PU) : Continuity should exist.
PKIA5262E
41 (R/B) – 1 (R/B) : Continuity should exist.
PKIA5263E
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
SKIA5930E
1 (R) – Ground : Battery voltage should exist.
PKIA5264E

INTERIOR ROOM LAMP
LT-183
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Revision: 2004 November 2004 FX35/FX45
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 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.
4. CHECK STEP LAMP CIRCUIT
1. Disconnect BCM connector and 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 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.
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 battery negative
cable after repairing harness, and then reconnect.
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installa-
tion of BCM" .
Bulb ReplacementAKS007FK
ROOM LAMP
1. Remove room lamp. Refer to LT- 1 8 4 , "Removal and Installation"
.
2. Insert a suitable tool and remove lens.
3. Remove the bulb.
4. Install in the reverse order of removal.47 (Y/R) – 2 (SB) : Continuity should exist.
PKIA5265E
41 (R/B) – 1 (R) : Continuity should exist.
PKIA5266E
41 (R/B) – Ground : Battery voltage should exist.
PKIA5267E
Room lamp :12V - 8W
PKIA2848E

LT-186
ILLUMINATION
Revision: 2004 November 2004 FX35/FX45

to VDC off switch (illumination) terminal 3

to clock (illumination) terminal 3

to hazard switch (illumination) terminal 3

to heated seat switch (driver side) (illumination) terminal 5

to heated seat switch (passenger side) (illumination) terminal 5

to A/C and AV switch (illumination) terminal 3

to NAVI control unit (illumination) terminal 25

to DVD player (illumination) terminal 12

to front cigarette lighter socket terminal 2

to rear power window switch LH (illumination) terminal 6 and

to rear power window switch RH (illumination) terminal 6.
Illumination control

through combination meter terminal 19

to A/T device (illumination) terminal 12

to snow mode switch (illumination) terminal 2

to VDC off switch (illumination) terminal 4

to clock (illumination) terminal 4

to hazard switch (illumination) terminal 4

to heated seat switch (driver side) (illumination) terminal 6

to heated seat switch (passenger side) (illumination) terminal 6

to A/C and AV switch (illumination) terminal 4

to NAVI control unit (illumination) terminal 30

to DVD player (illumination) terminal 10.
Ground is supplied at all times

to glove box lamp terminal 2 and

to front cigarette lighter socket terminal 3

through grounds M35, M45 and M85

to rear power window switch LH (illumination) terminal 7 and

to rear power window switch RH (illumination) terminal 7

through grounds B15 and B45.
With power and ground supplied, illumination lamps illuminate.
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is acti-
vated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the illumination lamps remain illuminated for 5 minutes, then the illumination lamps are
turned off.
When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after
illumination lamps are turned off by the battery saver control, and illumination lamps illuminate again.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007EJ
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAKS0080Y
Refer to LAN-6, "CAN Communication Unit" .