ignition INFINITI M35 2007 Factory Service Manual

INTERIOR ROOM LAMP
LT-267
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Revision: 2007 April2007 M35/M45
2. When getting off the vehicle

Lamps illuminate by timer operation when the push-button ignition switch (push switch) is turned OFF.*

Lamps illuminate by timer operation after any door is open and then all doors are closed.*

Timer operation stops and lamps are OFF, when driver side door is locked.
*: This setting can be changed by CONSULT-II. Refer to LT- 2 8 3 , "
WORK SUPPORT (INT LAMP)" .
POWER SUPPLY AND GROUND
Power is supplied at all times

through 50A fusible link (letter F, located in fuse and fusible link block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM (body control module) terminal 42,

through 10A fuse [No. 22, located in fuse block (J/B)]

to key slot terminal 1.
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 terminal 38.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM terminal 11.
Ground is supplied

to BCM terminal 52

through grounds M16 and M70.
When the driver side door is opened, ground is supplied

to BCM terminal 62

through front door switch driver side terminal 2

through case ground of front door switch driver side.
When the passenger side door is opened, ground is supplied

to BCM terminal 12

through front door switch passenger side terminal 2

through case ground of front door switch passenger side.
When the rear door LH is opened, ground is supplied

to BCM terminal 63

through rear door switch LH terminal 2

through case ground of rear door switch LH.
When the rear door RH is opened, ground is supplied

to BCM terminal 13

through rear door switch RH terminal 2

through case ground of rear door switch RH.
When driver side door is unlocked by door lock and unlock switch, BCM receives a ground signal

to BCM terminal 22

through power window main switch (door lock and unlock switch) terminal 14 or power window sub-switch
(front passenger side) (door lock and unlock switch) terminal 16

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

through grounds M16 and M70.
When the driver side door is unlocked by the front door lock assembly (driver side) (key cylinder switch), BCM
receives a ground signal

to BCM terminal 22

through power window main switch (door lock and unlock switch) terminals 14 and 6

INTERIOR ROOM LAMP
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Revision: 2007 April2007 M35/M45

to vanity mirror lamp LH and RH terminals 2

through grounds M16 and M70.
And power is supplied

through BCM terminal 41

to vanity mirror lamp (LH and RH) terminals 1.
ROOM LAMP TIMER OPERATION
BCM controls applicable lamps to illuminate for 15 seconds (can be set maximum 30 seconds) by timer oper-
ation under following conditions. BCM also controls applicable lamps to brighten for 1 second (can be set max-
imum 5 seconds) when turned ON, or to dim for 3 seconds (can be set maximum 5 seconds) when turned
OFF. (Timer operating time and dimming/brightening time can be changed with CONSULT-II. Refer to LT- 2 8 3 ,
"WORK SUPPORT (INT LAMP)" .) This control operates as follows.
Applicable lamps

Room lamp system: map lamp, foot lamp (driver side and passenger side) and personal lamp (rear LH
and rear RH).
BCM controls room lamp timer operation under following condition.

Condition 1: Door lock state changes.*
BCM judges as the door lock is unlocked under either case below.
–The Intelligent Key unit sends door lock/unlock trunk open request signal (driver side unlock or passenger
side unlock) to BCM through CAN communication line by unlock operation of intelligent key, outside key
antenna and front door request switch (driver side) or outside key antenna and front door request switch
(passenger side).
–Key cylinder switch state (unlock) signal is sent to BCM through power window serial link when front door
lock assembly (driver side) (key cylinder switch) is unlocked (ON) by power window main switch unlock
operation.
And fulfills all the conditions below.
–The engine switch (push switch) is OFF.
–All the doors are closed.
*: This setting can be changed by CONSULT-II. Refer to LT- 2 8 3 , "
WORK SUPPORT (INT LAMP)" .

Condition 2: Any door switch state changes.*
The BCM terminal value of operated door switch is changed when any door is opened and then closed.
From that BCM judges as the door is opened and then closed.
And fulfills all the conditions below.
–The engine switch (push switch) is OFF.
–All the doors are closed.
*: This setting can be changed by CONSULT-II. Refer to LT- 2 8 3 , "
WORK SUPPORT (INT LAMP)" .

Condition 3: Engine switch (push switch) state changes.*
The Intelligent Key unit judges as the engine switch (push switch) is OFF and sends push-button ignition
switch (push switch) signal to PDU (power distribution unit) when push-button ignition switch (push
switch) turned OFF. Then PDU (power distribution unit) turns OFF, IGN power supply and ACC power
supply.
And fulfills the conditions below.
–All the doors are closed.
*:This setting can be changed by CONSULT-II. Refer to LT- 2 8 3 , "
WORK SUPPORT (INT LAMP)" .
NOTE:
When timer operation signal is input during former timer operation, BCM goes for latter timer operation.

LT-270
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
ROOM LAMP TIMER OPERATING TIME
CONDITIONS FOR CANCELING TIMER
Timer operation is cancelled in any of the following conditions.

Driver door is locked.

Any door is opened.

Turn ignition switch is ACC or ON.
ROOM LAMP TIMER INAPPLICABLE LAMPS OPERATION

Step lamp system: step lamp (driver side, passenger side, rear LH and rear RH) and kicking plate illumi-
nation (driver side and passenger side).
Step lamp system lamps are ON/OFF linked with any door (driver side, passenger side, rear LH and rear
RH) opened and then closed.

Vanity mirror lamp LH and RH.
Operated side vanity mirror lamp is ON/OFF linked with vanity mirror opened and then closed.

Trunk room lamp (lower) and trunk room lamp (upper).
Trunk room lamps (lower and upper) are ON/OFF linked with trunk opened and then closed.
INTERIOR ROOM LAMP BATTERY SAVER FUNCTION
Applicable lamps

Room lamp system: map lamp, foot lamp (driver side and passenger side) and personal lamp (rear LH
and rear RH).

Step lamp system: step lamp (driver side, passenger side, rear LH and rear RH) and kicking plate illumi-
nation (driver side and passenger side).

Vanity mirror lamp LH and RH.

Trunk room lamp (lower) and trunk room lamp (upper).
If the any applicable lamp is left illuminated, BCM turns OFF the battery saver output power supply 30 or 60
minutes to prevent run down of the battery. (Factory setting time is 30 minutes. And timer setting can be
changed by CONSULT-II. Refer to LT- 2 8 5 , "
WORK SUPPORT (BATTERY SAVER)" .)

When the push-button ignition switch (push switch) is turned from ON to OFF, the timer is activated.

If any of the following door switch signal condition is changed with the push-button ignition switch (push
switch) in OFF position, the timer is activated when the change is occurred.
Door switch signals (driver side, passenger side, rear LH and RH), front door lock assembly (driver side) (key
cylinder switch) signal and Intelligent Key unlock signal.
SKIB4934E

LT-280
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for BCMNKS003T4
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
11 VIgnition switch
(ACC)ACC — Battery voltage
12 PFront door switch
passenger side
signalOFFFront door switch
passenger sideON (open) Approx. 0 V
OFF (closed)
Approx. 8.0 - 8.5 V
13 O/LRear door switch
RH signalOFF Rear door switch RHON (open) Approx. 0 V
OFF (closed)
Approx. 8.5 - 9.0 V
22 GPower window
serial linkOFFPower window main
switch (door lock and
unlock switch) and
power window sub-
switch (front passenger
side) (door lock and
unlock switch)Lock or unlock switch
ON
NOTE:
10 seconds just after
door lock and unlock
switch (driver side and
passenger side) is
turned “LOCK” or
“UNLOCK”.
OFF Battery voltage
37 LG Key switch signal OFF Intelligent Key is inserted into key slot. Battery voltage
Intelligent Key is removed from key slot. Approx. 0 V
38 WIgnition power
supplyON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
41 RBAT saver out-
put signalOFF — Battery voltage
42 PBattery power
supplyOFF — Battery voltage
47 VStep lamp output
signalOFF Any door switchON (open) Approx. 0 V
OFF (close) Battery voltage
48 BRRoom lamp
output signalON Any door switchON (open) Approx. 0 V
OFF (close) Battery voltage
— All doors are closedTurn ignition switch ON
→ OFFApprox. 0 V
(When room lamp timer
is operating)
Turn ignition switch ON Battery voltage
SKIB3419J
SKIB4865E
PKIC0930E

INTERIOR ROOM LAMP
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How to Perform Trouble DiagnosesNKS003T5
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 2 6 6 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 2 8 2 , "
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
52 B Ground ON — Approx. 0 V
55 WBattery power
supplyOFF — Battery voltage
57 SBTrunk switch
signalOFFTrunk room lamp
switchON (open) Approx. 0 V
OFF (close) Battery voltage
62 VFront door switch
driver side signalOFFFront door switch
driver sideON (open) Approx. 0 V
OFF (closed)
Approx. 7.5 - 8.0 V
63 R/GRear door switch
LH signalOFF Rear door switch LHON (open) Approx. 0 V
OFF (closed)
Approx. 7.5 - 8.0 V Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4960J
PKIB4960J

LT-282
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
Preliminary CheckNKS003T6
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
Refer to LT-273, "Wiring Diagram — ROOM/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. 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 harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Unit Power source Fuse or fusible link No.
BCMBatteryF
21
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
Key slot Battery 22
Terminal Ignition switch position
(+)
(−)OFFACCON
BCM
connectorTerminal
M111
GroundApprox.
0VBattery
voltageBattery
voltage
38Approx.
0VApprox.
0VBattery
voltage
M242Battery
voltageBattery
voltageBattery
voltage
55Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
BCM connector Terminal
GroundContinuity
M2 52 Yes
SKIB5125E

LT-284
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
DATA MONITOR (INT LAMP)
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
NOTE:
This item is displayed, but cannot be monitored.ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects items and monitor them.
Monitor item Contents
IGN ON SW “ON/OFF”Displays “IGN ON position (ON)/OFF, ACC position (OFF)” judged from the ignition switch
signal.
ACC ON SW “ON/OFF”Displays “IGN ACC, ON position (ON)/OFF position (OFF)” status judged from the key
switch signal.
KEY ON SW “ON/OFF”Displays “Intelligent Key inserted into key slot (ON)/Intelligent Key removed from key slot
(OFF)” status judged from the key switch signal.
DOOR SW - DR “ON/OFF”Displays status of the driver door as judged from the 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
signal.
DOOR SW - RL “ON/OFF”Displays “door open (ON)/door closed (OFF) ” status, determined from rear door switch LH
signal.
BACK DOOR SW
NOTE“OFF” —
CDL LOCK SW “ON/OFF”Displays “door locked (ON)/other (OFF) status, determined from central door lock switch
LOCK signal.
CDL UNLOCK SW “ON/OFF”Displays “door unlocked (ON)/other (OFF)” status, determined from central door lock switch
UNLOCK signal.
KEY CYL LK - SW “ON/OFF” Displays ”door locked (ON)” status, determined from key cylinder switch in driver door.
KEY CYL UN - SW “ON/OFF” Displays “door unlocked (OFF)” status, determined from key cylinder switch in driver door.
I - KEY LOCK “ON/OFF” Displays “locked (ON)/other (OFF)” status, determined from lock signal.
I - KEY UNLOCK “ON/OFF” Displays “unlocked (ON)/other (OFF)” status, determined from unlock signal.
TRNK/HAT MNTR “ON/OFF”Displays “trunk open (ON)/trunk close (OFF)” status, determined from trunk room lamp
switch.
I - KEY DR UNLK “ON/OFF”Displays “ON” when only driver door is unlocked or “OFF” other cases by intelligent Key or
any door request switch, determined from unlock signal.
I - KEY AS UNLK “ON/OFF”Displays “unlocked (ON)/locked (OFF)” states of passenger door by passenger side door
request switch, determined from unlock signal.

LT-286
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
Display Item List
NOTE:
This item is displayed, but cannot be monitored.
ACTIVE TEST (BATTERY SAVER)
Operation Procedure
1. Touch “BATTERY SAVER” 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
Monitor item Contents
IGN ON SW “ON/OFF”Displays “IGN ON position (ON)/OFF, ACC position (OFF)” judged from the ignition switch
signal.
ACC ON SW “ON/OFF”Displays “IGN ACC, ON position (ON)/OFF position (OFF)” status judged from the key
switch signal.
KEY ON SW “ON/OFF”Displays “Intelligent Key inserted into key slot (ON)/Intelligent Key removed from key slot
(OFF)” status judged from the key switch signal.
DOOR SW - DR “ON/OFF”Displays status of the driver door as judged from the 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
signal.
DOOR SW - RL “ON/OFF”Displays “door open (ON)/door closed (OFF) ” status, determined from rear door switch LH
signal.
BACK DOOR SW
NOTE“OFF” —
CDL LOCK SW “ON/OFF”Displays “door locked (ON)/other (OFF) status, determined from central door lock switch
LOCK signal.
CDL UNLOCK SW “ON/OFF”Displays “door unlocked (ON)/other (OFF)” status, determined from central door lock switch
UNLOCK signal.
KEY CYL LK – SW “ON/OFF” Displays “door locked (ON)” status, determined from key cylinder switch in driver door.
KEY CYL UN – SW “ON/OFF” Displays “door unlocked (OFF)” status, determined from key cylinder switch in driver door.
I - KEY LOCK “ON/OFF” Displays “locked (ON)/other (OFF)” status, determined from lock signal.
I - KEY UNLOCK “ON/OFF” Displays “unlocked (ON)/other (OFF)” status, determined from unlock signal.
TRNK/HAT MNTR “ON/OFF”Displays “trunk open (ON)/trunk close (OFF)” status, determined from trunk room lamp
switch.
I - KEY DR UNLK “ON/OFF”Displays “ON” when only driver door is unlocked or “OFF” other cases by Intelligent Key or
any door request switch, determined from unlock signal.
I - KEY AS UNLK “ON/OFF”Displays “unlocked (ON)/locked (OFF)” states of passenger door by passenger side door
request switch, determined from unlock signal.
Test item Description
BATTERY SAVER Personal lamps and map lamps can be operated by any ON-OFF operations.

LT-288
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
4. CHECK CIRCUIT BETWEEN BCM AND MAP LAMP (2)
1. Turn ignition switch OFF.
2. Disconnect BCM connector and map lamp connector.
3. Check continuity between BCM harness connector (A) and map
lamp harness connector (B).
OK or NG
OK >> Replace BCM. Refer to BCS-15, "Removal and Installa-
tion of BCM" . (Reconnect BCM connector and check
the operation of map lamp. If it is faulty, replace BCM.)
NG >> Repair harness or connector between BCM and map
lamp.
AB
Continuity
Connector Terminal Connector Terminal
M2 48 R54 5 Yes
SKIB4867E

ILLUMINATION
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ILLUMINATIONPFP:27545
System DescriptionNKS003TH
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN
communication lines. The CPU (central processing unit) located in the IPDM E/R controls the tail lamp relay
coil. This relay, when energized, directs power to the illumination lamps, which then illuminate.
OUTLINE
Power is supplied at all times

through 15A fuse (No. 71, located in IPDM E/R)

to tail lamp relay, located in IPDM E/R, and

to CPU located in IPDM E/R,

through 15A fuse (No. 78, located in IPDM E/R)

to CPU located in IPDM E/R,

through 50A fusible link (letter F, located in fuse, fusible link and relay block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM terminal 42 and

to combination meter terminal 23,

through 10A fuse [No. 19, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 54,

through 10A fuse [No. 22, located in fuse block (J/B)]

to intelligent key unit terminals 1, 41 and 57.
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 terminal 38,

through 10A fuse [No. 14, located in fuse block (J/B)]

to combination meter terminal 12,

through 10A fuse [No. 12, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 53 and

to rear sunshade cancel relay terminal 1.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM terminal 11

to unified meter and A/C amp. terminal 41 and

to combination meter terminal 2.
Ground is supplied

to BCM terminal 52

to unified meter and A/C amp. terminals 55 and 71

to combination meter terminals 9, 10, and 11

to Intelligent Key unit terminals 20, 40, 56 and 72, and

to illumination control switch terminal 3

through grounds M16 and M70,

to IPDM E/R terminals 38 and 51

through grounds E22 and E43.