2006 INFINITI M35 ground

LT-264
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2006 January2006 M35/M45
6. CHECK PARKING, LICENSE PLATE AND TAIL LAMPS GROUND CIRCUIT
1. Check continuity between front combination lamp harness con-
nector and ground.
2. Check continuity between rear combination lamp harness con-
nector and ground.
3. Check continuity between license plate lamp harness connector
and ground.
OK or NG
OK >> Check bulbs.
NG >> Repair harness or connector.
Parking, License Plate and Tail Lamps Do Not Turn OFF (After Approx. 10 Min-
utes)
NKS003SU
This symptom indicates the malfunction of ignition relay in IPDM E/R. Refer to PG-19, "Function of
Detecting Ignition Relay Malfunction" .
Select “BCM” on CONSULT-II. Select “HEADLAMP” on “SELECT TEST ITEM” screen and select “DATA
MONITOR” on “SELECT DIAG MODE” screen. If “LIGHT SW 1ST” is OFF when lighting switch is OFF,
replace IPDM E/R.
Front combination lamp
(parking and side marker)
connectorTerminal
GroundContinuity
RH E47
1Yes
LH E54
SKIB4839E
Rear combination lamp
(tail and side marker)
connectorTerminal
GroundContinuity
RH B130
4 Yes
LH B135
SKIB4840E
License plate lamp
connectorTerminal
GroundContinuity
RH T105
2 Yes
LH T108
PKIB7990E

LT-268
INTERIOR ROOM LAMP
Revision: 2006 January2006 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 5 , "
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
LT-269
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Revision: 2006 January2006 M35/M45
through front door lock assembly (driver side) (key cylinder switch) terminals 5 and 4
through grounds M16 and M70.
When a signal, or combination of door open signals is received by BCM, ground is supplied
to foot lamp driver side and passenger side terminals 2
to personal lamp LH and RH terminals 1
to map lamp terminal 2 and 5
through BCM terminal 48,
to step lamp (driver side, passenger side, rear LH and RH) terminals 2
to kicking plate illumination (driver side and passenger side) terminals 2
through BCM terminal 47.
With power and ground supplied, the interior lamps illuminate.
SWITCH OPERATION
When any front door switch is ON (door is opened), ground is supplied
to step lamp (driver side, passenger side, rear LH and RH) terminals 2
to kicking plate illumination (driver side and passenger side) terminals 2
through BCM terminal 47.
And power is supplied
through BCM terminal 41
to step lamp (driver side, passenger side, rear LH and RH) terminals 1
to kicking plate illumination (driver side and passenger side) terminals 1.
When any door switch is ON (door is opened) and personal lamp and map lamp is DOOR position, ground is
supplied
to personal lamp LH and RH terminal 1
to map lamp terminals 2 and 5
through BCM terminal 48.
And power is supplied
through BCM terminal 41
to personal lamp LH and RH terminals 3
to map lamp terminal 3.
When map lamp switch is ON, ground is supplied
to map lamp terminal 1
through grounds M16 and M70.
And power is supplied
through BCM terminal 41
to map lamp terminal 3.
When personal lamp LH and RH switch is ON, ground is supplied
to personal lamp LH and RH terminals 2
through grounds M16 and M70.
And power is supplied
through BCM terminal 41
to personal lamp LH and RH terminals 3.
When trunk lid lock assembly (trunk room lamp switch) is ON, ground is supplied
to trunk room lamp (upper and lower) terminals 2
through trunk lid lock assembly (trunk room lamp switch) terminals 1 and 2
through grounds B5, B40 and B131.
And power is supplied
through BCM terminal 41
to trunk room lamp (upper and lower) terminals 1.
When vanity mirror lamp LH and RH switch is ON, ground is supplied

LT-270
INTERIOR ROOM LAMP
Revision: 2006 January2006 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 5 ,
"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-285, "
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-285, "
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 5 , "
WORK SUPPORT (INT LAMP)" .
NOTE:
When timer operation signal is input during former timer operation, BCM goes for latter timer operation.

LT-282
INTERIOR ROOM LAMP
Revision: 2006 January2006 M35/M45
How to Perform Trouble DiagnosesNKS003T5
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 2 6 7 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT-283, "
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. 0V
55 WBattery power
supplyOFF — Battery voltage
57 SBTrunk switch
signalOFFTrunk room lamp
switchON (open) Approx. 0V
OFF (close) Battery voltage
62 VFront door switch
driver side signalOFFFront door switch
driver sideON (open) Approx. 0V
OFF (closed)
Approx. 7.5 - 8.0V
63 R/GRear door switch
LH signalOFF Rear door switch LHON (open) Approx. 0V
OFF (closed)
Approx. 7.5 - 8.0V Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4960J
PKIB4960J

INTERIOR ROOM LAMP
LT-283
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Revision: 2006 January2006 M35/M45
Preliminary CheckNKS003T6
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE
Check for blown fuses.
Refer to LT-274, "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 >> Check harness for open or short between BCM and
fuse.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Check harness ground circuit.
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
38 Approx. 0V Approx. 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: 2006 January2006 M35/M45
CONSULT-II Functions (BCM)NKS003T7
CONSULT-II can display each diagnostic item using the diagnostic test modes 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 the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, and then turn
ignition switch ON.
2. Touch “START (NISSAN BASED VHCL)”.
3. Touch “BCM” on “SELECT SYSTEM” screen.
If “BCM” is not indicated, check power supply and ground of
BCM. If it is normal, refer to GI-40, "
CONSULT-II Data Link Con-
nector (DLC) Circuit" .
BCM diagnosis part 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.
BATTERY SAVERWORK 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.
BCMSELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
SKIB3794E
BCIA0029E
BCIA0030E

ILLUMINATION
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Revision: 2006 January2006 M35/M45
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.