Ignition switch INFINITI FX35 2005 Service Manual

INTERIOR ROOM LAMP LT-163
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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
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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

INTERIOR ROOM LAMP LT-177
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CONSULT-II Functions (BCM)AKS007FE
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
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 ignition switch OFF, connect CONSULT-II and CONSULT-II CONVERTER to data link connector, then turn ignition switch
ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen. If “BCM” is not indicated, refer to GI-39, "
CONSULT-II Data Link
Connector (DLC) Circuit" .
BCM diagnosis part Diagnosis mode Description
INT LAMP WORK SUPPORT Changes 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
BCIA0029E
BCIA0030E

LT-178
INTERIOR ROOM LAMP
Revision: 2005 July 2005 FX
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 “SELECT MONITOR ITEM” screen.
4. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is selected, all the items will be monitored.
5. Touch “START”.
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 INTCON The 30 seconds glowing function interior room lamps and ignition keyhole illu-
mination can be selected when driver door is released (unlocked). ON/OFF
ROOM LAMP ON TIME SET The time in order to escalate illumination can be adjusted when interior room
lamps and ignition keyhole illumination is turned on. MODE 1 – 7
ROOM LAMP OFF TIME SET The time in order to diminish illumination can be adjusted when interior room
lamps and 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 items and monitors them.
Monitor item Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from ignition switch signal.
KEY ON SW “ON/OFF” Displays “Key inserted (ON)/key removed (OFF)” status judged from key switch signal.

INTERIOR ROOM LAMP LT-179
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NOTE:
Vehicle with intelligent key system display this item.
ACTIVE TEST
Operation Procedure
1. Touch “INT LAMP” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
NOTE:
This item is displayed, but cannot be tested. DOOR SW - DR “ON/OFF”
Displays status of driver door as judged from driver door switch signal. (Door is open: ON/Door is
closed: OFF)
DOOR SW - AS “ON/OFF” Displays “Door open (ON)/Door closed (OFF)” status, determined from passenger door switch
signal.
DOOR SW - RR “ON/OFF” Displays “Door open (ON)/Door closed (OFF)” status, determined from rear door switch RH sig-
nal.
DOOR SW - RL “ON/OFF” Displays “Door open (ON)/Door closed (OFF) ” status, determined from rear door switch LH sig-
nal.
BACK DOOR SW “ON/OFF” Displays “Door open (ON)/Door closed (OFF) ” status, determined from back door switch signal.
KEY CYL LK - SW “ON/OFF” Displays “Door locked (ON) status, determined from key cylinder lock switch in driver door.
KEY CYL UN - SW “ON/OFF” Displays “Door unlocked (OFF) status, determined from key cylinder lock switch in driver door.
CDL LOCK SW “ON/OFF” Displays “Door locked (ON)/Door unlocked (OFF) status, determined from locking detection
switch in driver door.
CDL UNLOCK SW “ON/OFF” Displays “Door unlocked (OFF)” status, determined from locking detection switch in passenger
door.
I − KEY LOCK
NOTE“ON/OFF” Displays “Locked (ON)/Other (OFF)” status, determined from lock signal.
I − KEY UNLOCK
NOTE“ON/OFF” Displays “Unlocked (ON)/Other (OFF)” status, determined from unlock signal.
Monitor item Contents
Test item Description
INT LAMP Interior room lamp can be operated by any ON −OFF operations.
IGN ILLUM Ignition key hole illumination can be operated by ON −OFF operation.
STEP LAMP TEST All step lamp can be operated by ON −OFF operation.
LUGGAGE LAMP TEST
NOTE—

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
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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