2007 INFINITI M35 control unit

LT-4Revision: 2007 April2007 M35/M45 REMOVAL .........................................................230
INSTALLATION ..................................................230
Switch Circuit Inspection ......................................230
HAZARD SWITCH ..................................................231
Removal and Installation ......................................231
REMOVAL .........................................................231
COMBINATION SWITCH ........................................232
Wiring Diagram — COMBSW — ..........................232
Combination Switch Reading Function .................233
Terminals and Reference Values for BCM ............233
CONSULT-II Functions (BCM) ..............................238
CONSULT-II BASIC OPERATION .....................238
DATA MONITOR ................................................238
Combination Switch Inspection ............................239
Removal and Installation ......................................241
STOP LAMP ............................................................242
Wiring Diagram — STOP LAMP — ......................242
High-Mounted Stop Lamp .....................................244
BULB REPLACEMENT, REMOVAL AND
INSTALLATION ..................................................244
Stop Lamp ............................................................244
BULB REPLACEMENT .....................................244
REMOVAL AND INSTALLATION .......................244
BACK-UP LAMP .....................................................245
Wiring Diagram — B/LAMP — .............................245
Bulb Replacement ................................................246
Removal and Installation ......................................247
REMOVAL .........................................................247
INSTALLATION ..................................................247
PARKING, LICENSE PLATE AND TAIL LAMPS ....248
Component Parts and Harness Connector Location .248
System Description ...............................................248
OUTLINE ...........................................................248
OPERATION BY LIGHTING SWITCH ...............249
COMBINATION SWITCH READING FUNCTION .249
EXTERIOR LAMP BATTERY SAVER CONTROL .249
CAN Communication System Description ............249
CAN Communication Unit .....................................249
Schematic .............................................................250
Wiring Diagram — TAIL/L — ................................251
Terminals and Reference Values for BCM ............256
Terminals and Reference Values for IPDM E/R ....257
How to Perform Trouble Diagnoses ......................257
Preliminary Check ................................................257
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ..................................................................257
CONSULT-II Functions (BCM) ..............................258
CONSULT-II Functions (IPDM E/R) ......................258
Parking, License Plate and Tail Lamps Do Not Illu-
minate ...................................................................259
Parking, License Plate and Tail Lamps Do Not Turn
OFF (After Approx. 10 Minutes) ...........................263
License Plate Lamp ..............................................264
BULB REPLACEMENT .....................................264
Removal and Installation ......................................264
REMOVAL .........................................................264INSTALLATION ..................................................264
Front Parking (Clearance) Lamp ...........................264
BULB REPLACEMENT ......................................264
REMOVAL AND INSTALLATION .......................264
REAR COMBINATION LAMP .................................265
Bulb Replacement .................................................265
REAR TURN SIGNAL LAMP BULB, STOP/TAIL
LAMP BULB .......................................................265
Removal and Installation .......................................265
REMOVAL ..........................................................265
INSTALLATION ..................................................265
INTERIOR ROOM LAMP ........................................266
Component Parts and Harness Connector Location .266
System Description ...............................................266
ROOM LAMP TIMER BASIC OPERATION .......266
POWER SUPPLY AND GROUND .....................267
SWITCH OPERATION .......................................268
ROOM LAMP TIMER OPERATION ...................269
CONDITIONS FOR CANCELING TIMER ..........270
ROOM LAMP TIMER INAPPLICABLE LAMPS
OPERATION ......................................................270
INTERIOR ROOM LAMP BATTERY SAVER
FUNCTION ........................................................270
Schematic .............................................................271
Wiring Diagram — ROOM/L — .............................273
Terminals and Reference Values for BCM ............280
How to Perform Trouble Diagnoses ......................281
Preliminary Check .................................................282
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ...................................................................282
CONSULT-II Functions (BCM) ..............................283
CONSULT-II BASIC OPERATION .....................283
WORK SUPPORT (INT LAMP) .........................283
DATA MONITOR (INT LAMP) ............................284
ACTIVE TEST (INT LAMP) ................................285
WORK SUPPORT (BATTERY SAVER) .............285
DATA MONITOR (BATTERY SAVER) ...............285
ACTIVE TEST (BATTERY SAVER) ...................286
Interior Room Lamp Control Does Not Operate ....287
Map Lamp .............................................................289
BULB REPLACEMENT ......................................289
REMOVAL AND INSTALLATION .......................289
Personal Lamp ......................................................289
BULB REPLACEMENT ......................................289
REMOVAL AND INSTALLATION .......................289
Foot Lamp (Driver Side) ........................................290
BULB REPLACEMENT ......................................290
REMOVAL AND INSTALLATION .......................290
Foot Lamp (Passenger Side) ................................291
BULB REPLACEMENT ......................................291
REMOVAL AND INSTALLATION .......................291
Vanity Mirror Lamp ................................................291
BULB REPLACEMENT ......................................291
Step Lamp .............................................................292
BULB REPLACEMENT ......................................292
REMOVAL AND INSTALLATION .......................292
Kicking Plate Illumination ......................................292
BULB REPLACEMENT ......................................292

LT-5
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Revision: 2007 April2007 M35/M45 REMOVAL AND INSTALLATION ...................... 292
Trunk Room Lamp (Upper/Lower) ........................ 292
BULB REPLACEMENT ..................................... 292
REMOVAL AND INSTALLATION ...................... 292
ILLUMINATION ....................................................... 293
System Description .............................................. 293
OUTLINE ........................................................... 293
ILLUMINATION OPERATION BY LIGHTING
SWITCH ............................................................ 294
EXTERIOR LAMP BATTERY SAVER CONTROL . 295
CAN Communication System Description ............ 295
CAN Communication Unit .................................... 295
Schematic ............................................................ 296
Wiring Diagram — ILL — ..................................... 298
Glove Box Lamp .................................................... 311BULB REPLACEMENT, REMOVAL AND
INSTALLATION .................................................311
Cigarette Lighter Illumination ................................311
BULB REPLACEMENT, REMOVAL AND
INSTALLATION .................................................311
Front Ashtray Illumination .....................................312
BULB REPLACEMENT, REMOVAL AND
INSTALLATION .................................................312
Rear Ashtray Illumination .....................................312
REMOVAL AND INSTALLATION ......................312
INSTALLATION .................................................312
BULB SPECIFICATIONS ........................................313
Headlamp .............................................................313
Exterior Lamp .......................................................313
Interior Lamp/Illumination .....................................313

LT-8
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2007 April2007 M35/M45
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -PFP:26010
Component Parts and Harness Connector LocationNKS003NY
System DescriptionNKS003NZ
The control of the headlamp system operation is dependent upon the position of the combination switch (light-
ing switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives
input signal requesting the headlamps (and tail lamps) 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 headlamp high and headlamp low relay coils.
These relays, when energized, direct power to the respective headlamps, which then illuminate.
PKIC1983E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-11
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COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), and the ignition switch is turned
from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
AUTO LIGHT OPERATION
Refer to LT- 11 5 , "System Description" .
CAN Communication System DescriptionNKS003O0
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 UnitNKS003O1
Refer to LAN-50, "CAN System Specification Chart" .

LT-42
HEADLAMP (FOR USA) - XENON TYPE -
Revision: 2007 April2007 M35/M45
HEADLAMP (FOR USA) - XENON TYPE -PFP:26010
Component Parts and Harness Connector LocationNKS003OK
System DescriptionNKS003OL
The control of the headlamp system operation is dependent upon the position of the combination switch (light-
ing switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives
input signal requesting the headlamps (and tail lamps) 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 headlamp high and headlamp low relay coils.
These relays, when energized, direct power to the respective headlamps, which then illuminate.
PKIC1983E

HEADLAMP (FOR USA) - XENON TYPE -
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COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), and the ignition switch is turned
from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
AUTO LIGHT OPERATION
Refer to LT- 11 5 , "System Description" .
XENON HEADLAMP
Xenon type lamps are used for to the low beam headlamps. Xenon bulbs do not use a filament. Instead, they
produce light when a high voltage current is passed between two tungsten electrodes through a mixture of
xenon (an inert gas) and certain other metal halides. In addition to strong lighting power, electronic control of
the power supply gives the headlamps stable quality and tone color.
Followings are some advantages of the xenon type headlamp.

The light produced by the headlamps is white color similar to sunlight that is easy to the eyes.

Light output is nearly double that of halogen headlamps, affording increased area of illumination.

Counter-reflected luminance increases and the contrast enhances on the wet road in the rain. That makes
visibility go up more than the increase of the light volume.

Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
CAN Communication System DescriptionNKS003OM
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 UnitNKS003ON
Refer to LAN-50, "CAN System Specification Chart" .

HEADLAMP (FOR USA) - XENON TYPE -
LT-67
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5. CHECK HEADLAMP GROUND
1. Turn ignition switch OFF.
2. Check continuity between front combination lamp (RH and LH)
harness connector and ground.
OK or NG
OK >> Check headlamp harness and connectors, ballasts (HID
control unit), and xenon bulbs. Refer to LT- 7 1 , "
Xenon
Headlamp Trouble Diagnosis" .
NG >> Repair harness or connector.
6. CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT COMBINATION LAMP
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
front combination lamp (RH and LH) harness connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and Installation of IPDM E/R" .
NG >> Repair harness or connector.
Front combination lamp
connectorTe r m i n a l
GroundContinuity
RH E47 4
Ye s
LH E54 4
SKIB4759E
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E720 E47 8
Ye s
LH 30 E54 8
A
GroundContinuity
Connector Terminal
RH
E720
No
LH 30
SKIB4760E

LT-68
HEADLAMP (FOR USA) - XENON TYPE -
Revision: 2007 April2007 M35/M45
Headlamp Low Beam Does Not Illuminate (One Side)NKS003P0
1. CHECK BULB
Check ballast (HID control unit) and xenon bulb of lamp which does not illuminate. Refer to LT- 7 1 , "
Xenon
Headlamp Trouble Diagnosis" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning part.
2. CHECK HEADLAMP INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH or LH connector.
3. Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “LAMPS” on “SELECT TEST ITEM” screen.
5. Touch “LO” screen.
6. When headlamp low beam is operating, check voltage between
front combination lamp RH or LH harness connector and
ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH or LH connector.
3. Start auto active test. Refer to PG-23, "
Auto Active Test" .
4. When headlamp low beam is operating, check voltage between front combination lamp RH or LH harness
connector and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
Terminal
Voltage
(Approx.) (+)
(-)
Front combination lamp
connectorterminal
RH E47 8
Ground Battery voltage
LH E54 8
Terminal
Voltage
(Approx.) (+)
(-)
Front combination lamp
connectorterminal
RH E47 8
Ground Battery voltage
LH E54 8
SKIB4758E