ground INFINITI M35 2006 Factory Service Manual

LT-250
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2006 January2006 M35/M45
With the ignition switch in the ON or START position, power is supplied
to CPU located in IPDM E/R,
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,
to IPDM E/R terminals 38 and 51
through grounds E22 and E43.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the parking, license plate and tail lamps to illuminate. This input signal is communi-
cated to the IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls the
tail lamp relay coil, which when energized, directs power
through IPDM E/R terminal 21
to front combination lamp LH and RH terminals 5 (parking)
to front combination lamp LH and RH terminals 7 (side marker)
to rear combination lamp LH and RH terminals 1 (tail and side marker)
to license plate lamp LH and RH terminals 1.
Ground is supplied at all times
to front combination lamp LH and RH terminals 1 (parking and side marker)
through grounds E22 and E43,
to rear combination lamp LH and RH terminals 4 (tail and side marker)
to license plate lamp LH and RH terminals 2
through grounds B5, B40 and B131.
With power and ground supplied, the parking, license plate and tail lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer toBCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST (or 2ND) position, and ignition switch is turned
from ON or ACC to OFF, battery saver control feature is activated.
Under this condition, parking, license plate, side marker and tail lamps remain illuminated for 5 minutes, then
the parking, license plate, side marker and tail lamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionNKS003SJ
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 UnitNKS003SK
Refer to LAN-34, "CAN Communication Unit" .

PARKING, LICENSE PLATE AND TAIL LAMPS
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Terminals and Reference Values for BCMNKS003SN
CAUTION:
Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.
Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-II. Refer to LT- 5 8 , "
DATA MONITOR" .
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
2L/RCombination
switch input 5ONLighting, turn, wiper
switch
(Wiper dial position 4)Lighting switch 1ST
Approx. 1.0V
OFF Approx. 0V
11 VIgnition switch
(ACC)ACC — Battery voltage
33 GRCombination
switch output 4ONLighting, turn, wiper
switch
(Wiper dial position 4)Lighting switch 1ST
(The same result with
lighting switch 2ND)
Approx. 1.2V
OFF
Approx. 7.0 - 7.5V
38 WIgnition switch
(ON) ON — Battery voltage
39 L CAN
H — — —
40 P CAN
L — — —
42 PBattery power
supplyOFF — Battery voltage
52 B Ground ON — Approx. 0V
55 WBattery power
supplyOFF — Battery voltage
PKIB4957J
PKIB4958J
PKIB4960J

LT-258
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2006 January2006 M35/M45
Terminals and Reference Values for IPDM E/RNKS003SO
How to Perform Trouble DiagnosesNKS003SP
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 2 4 9 , "
System Description" .
3. Carry out the Preliminary Check. Refer to LT- 2 5 8 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do the parking, license plate and tail lamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS003SQ
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE
Check for blown fuses.
Refer to LT-252, "Wiring Diagram — TAIL/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" .
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
21 R/LParking, license plate, and
tail lamp outputONLighting switch
1STOFF Approx. 0V
ON Battery voltage
38 B Ground ON — Approx. 0V
49 L CAN
H — — —
50 P CAN
L — — —
51 B Ground ON — Approx. 0V
Unit Power source Fuse and fusible link No.
BCMBatteryF
21
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
IPDM E/R Battery71
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PARKING, LICENSE PLATE AND TAIL LAMPS
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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.
CONSULT-II Functions (BCM)NKS003SR
Refer to LT- 5 7 , "CONSULT-II Functions (BCM)" in HEADLAMP - XENON TYPE.
Refer to LT- 2 2 , "
CONSULT-II Functions (BCM)" in HEADLAMP - CONVENTIONAL TYPE.
CONSULT-II Functions (IPDM E/R)NKS003SS
Refer to LT- 6 0 , "CONSULT-II Functions (IPDM E/R)" in HEADLAMP - XENON TYPE.
Refer to LT- 2 5 , "
CONSULT-II Functions (IPDM E/R)" in HEADLAMP - CONVENTIONAL TYPE.
Terminal Ignition switch position
(+)
(-) OFF ACC ON
BCM
connectorTerminal
M111
GroundApprox. 0VBattery
voltageBattery
voltage
38 Approx. 0V Approx. 0VBattery
voltage
M242Battery
voltageBattery
voltageBattery
voltage
55 Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
BCM connector Terminal
GroundContinuity
M2 52 Yes
SKIB5125E

PARKING, LICENSE PLATE AND TAIL LAMPS
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4. CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Select “IPDM E/R” on CONSULT-II, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “TAIL LAMP” on “SELECT TEST ITEM” screen.
5. Touch “ON” screen.
6. When tail lamp relay is operating, check voltage between front combination lamp, license plate lamp, rear
combination lamp harness connector and ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Start auto active test. Refer to PG-24, "
Auto Active Test" .
4. When tail lamp relay is operating, check voltage between front combination lamp, license plate lamp, rear
combination lamp harness connector and ground.
Terminal
Vo l ta g e (+)
(-)
Front combination lamp
(parking) connectorTerminal
RH E47
5 Ground Battery voltage
LH E54
SKIB4832E
Terminal
Vo l ta g e (+)
(-)
Front combination lamp
(side marker) connectorTerminal
RH E47
7 Ground Battery voltage
LH E54
SKIB4833E
Terminal
Voltage (+)
(-)
Rear combination lamp
(tail) connectorTerminal
RH B130
1 Ground Battery voltage
LH B135
SKIB4834E

LT-262
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2006 January2006 M35/M45
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
Terminal
Voltage (+)
(-)
License plate lamp
connectorTerminal
RH T105
1 Ground Battery voltage
LH T108
PKIB7987E

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
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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.