headlamp INFINITI FX35 2008 Owner's Guide

ELECTRICAL LOAD SIGNALEC-1147
< SERVICE INFORMATION > [VK45DE]
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ELECTRICAL LOAD SIGNAL
DescriptionINFOID:0000000001327048
The electrical load signal (Headlamp switch signal, r
ear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000001327049
Specification data are reference values.
Diagnosis ProcedureINFOID:0000000001327050
1.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-III and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3.CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
4.CHECK REAR WINDOW DEFOGGER SYSTEM
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL  Ignition switch: ON Rear window defogger switch: ON
and/or lighting switch: 2nd position
ON
Rear window defogger switch and lighting
switch: OFF OFF
HEATER FAN SW  Engine: After warming up, idle the
engine Heater fan switch: ON ON
Heater fan switch: OFF OFF
Condition Indication
Rear window defogger switch: ON ON
Rear window defogger switch: OFF OFF
Condition Indication
Lighting switch: ON at 2nd position ON
Lighting switch: OFF OFF
Condition Indication
Heater fan control switch: ON ON
Heater fan control switch: OFF OFF
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EC-1148
< SERVICE INFORMATION >[VK45DE]
ELECTRICAL LOAD SIGNAL
Refer to
GW-60.
>> INSPECTION END
5.CHECK HEADLAMP SYSTEM
Refer to LT- 5
.
>> INSPECTION END
6.CHECK HEATER FAN CONTROL SYSTEM
Refer to AT C - 3 2
.
>> INSPECTION END
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EI-16
< SERVICE INFORMATION >
FRONT BUMPER
12. Remove nuts of bumper stay, and remove bumper stay. Removenuts with power tool.
13. Remove nuts of front bumper guard bar, and remove front bumper guard bar. Remove nuts with power tool.
14. Remove fog lamps located in bumper fascia. Refer to LT-76,
"Removal and Installation".
INSTALLATION
Install in the reverse order of removal.
NOTE:
After installation, adjust the clearance.
REMOVAL AND INSTALLATION OF FILLET MOLDING
Removal
1. Remove screws of fillet molding.
2. Remove clips of fillet molding.
3. Remove fillet molding.
Installation
1. Clean adhesive portion of front fender with white gasoline.
2. Strip pattern from the new double adhesive tape and paste on front fender.
3. Fillet molding assembly hold with front fender.
REMOVAL AND INSTALLATION OF BUMPER CENTER MOLDING
Removal
1. Remove front bumper fascia. Refer to EI-15, "Removal and Installation".
2. Remove bumper center molding mounting nuts.
3. Disengage plastic pawls from bumper fascia.
4. Remove bumper center molding.
Installation
Install in the reverse order of removal.
PIIA4339E
Portion Clearance
Front bumper – Front grille A – A 0.5 – 3.5 mm (0.020 – 0.138 in)
Front bumper – Headlamp B – B 1.5 – 4.5 mm (0.059 – 0.177 in)
Front bumper – Front fender C – C 0.0 – 0.5 mm (0.000 – 0.020 in)
PIIA4350E
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TROUBLE DIAGNOSISLAN-9
< SERVICE INFORMATION > [CAN FUNDAMENTAL]
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Example: Main Line Between Data Link
Connector and ABS Actuator and Electr ic Unit (Control Unit) Open Circuit
Example: CAN-H, CAN-L Harness Short Circuit
SKIB8740E
Unit name Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM  Reverse warning chime does not sound.
 The front wiper moves under continuous operation mode even though the front wip-
er switch being in the intermittent position.
EPS control unit The steering effort increases.
Combination meter  The shift position indicator and OD OFF indicator turn OFF.
 The speedometer is inoperative.
 The odo/trip meter stops.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/R When the ignition switch is ON,
 The headlamps (Lo) turn ON.
 The cooling fan continues to rotate.
SKIB8741E
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LAN-10
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Self-Diagnosis
INFOID:0000000001451950
CAN Diagnostic Support MonitorINFOID:0000000001451951
CONSULT-III and CAN diagnostic support monitor (on-boar d diagnosis function) are used for detecting root
cause.
MONITOR ITEM (CONSULT-III)
Unit name Symptom
ECM  Engine torque limiting is affected, and shift harshness increases.
 Engine speed drops.
BCM  Reverse warning chime does not sound.
 The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.
 The room lamp does not turn ON.
 The engine does not start (if an error or malfunction occurs while turning the igni- tion switch OFF.)
 The steering lock does not release (if an error or malfunction occurs while turning the ignition switch OFF.)
EPS control unit The steeri ng effort increases.
Combination meter  The tachometer and the speedometer do not move.
 Warning lamps turn ON.
 Indicator lamps do not turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/R When the ignition switch is ON,
 The headlamps (Lo) turn ON.
 The cooling fan continues to rotate.
DTC
Self-diagnosis item
(CONSULT-III indication) DTC detection condition Inspection/Action
U1000 CAN COMM CIRCUIT When ECM is not transmitting or receiving CAN
communication signal of OBD (emission-related
diagnosis) for 2 seconds or more.
Refer to LAN-13
.
When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001 CAN COMM CIRCUIT When ECM is not transmitting or receiving CAN
communication signal other than OBD (emis-
sion-related diagnosis) for 2 seconds or more.
U1002 SYSTEM COMM When a control unit is not transmitting or receiv-
ing CAN communication signal for 2 seconds or
less. Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit.
U1010 CONTROL UNIT [CAN] When an error is detected during the initial diag-
nosis for CAN controller of each control unit. Replace the control unit
indicating “U1010”.
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LT-1
ELECTRICAL
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CONTENTS
LIGHTING SYSTEM
SERVICE INFORMATION .. ..........................4
PRECAUTIONS .............................................. .....4
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
4
General Precaution for Service Operation ................4
HEADLAMP - XENON TYPE - ............................5
Component Parts and Harness Connector Loca-
tion ...................................................................... ......
5
System Description ...................................................5
CAN Communication System Description .................7
CAN Communication Unit .........................................7
Schematic .................................................................8
Wiring Diagram - H/LAMP - .......................................9
Terminal and Reference Value for BCM .................12
Terminal and Reference Value for IPDM E/R .........14
How to Proceed with Trouble Diagnosis .................14
Preliminary Check ...................................................15
CONSULT-III Functions (BCM) ...............................16
CONSULT-III Functions (IPDM E/R) .......................17
Headlamp Does Not Change To High Beam (Both
Sides) ......................................................................
18
Headlamp Does Not Change To High Beam (One
Side) ........................................................................
20
Headlamp Low Beam Does Not Illuminate (Both
Sides) .................................................................. ....
21
Headlamp Low Beam Does Not Illuminate (One
Side) .................................................................... ....
23
Headlamp RH Low Beam and High Beam Does
Not Illuminate ..........................................................
24
Headlamp LH Low Beam and High Beam Does
Not Illuminate ..........................................................
25
Headlamps Does Not Turn OFF .............................26
General Information for Xenon Headlamp Trouble
Diagnosis ................................................................
26
Caution: ...................................................................26
Xenon Headlamp Trouble Diagnosis ......................27
Aiming Adjustment ..................................................27
Bulb Replacement ...................................................28
Removal and Installation ..................................... ....30
Disassembly and Assembly .....................................30
DAYTIME LIGHT SYSTEM ...............................32
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
32
System Description ..................................................32
CAN Communication System Description ...............33
CAN Communication Unit ........................................33
Schematic ................................................................34
Wiring Diagram - DTRL - .........................................35
Terminal and Reference Value for BCM ..................38
How to Proceed with Trouble Diagnosis ..................41
Preliminary Check ...................................................41
CONSULT-III Functions (BCM) ...............................43
Daytime Light Control Does Not Operate Properly ....44
Aiming Adjustment ...................................................46
Bulb Replacement ...................................................46
Removal and Installation .........................................46
Disassembly and Assembly .....................................46
AUTO LIGHT SYSTEM .....................................47
Component Parts and Harness Connector Loca-
tion ...........................................................................
47
System Description ..................................................47
CAN Communication System Description ...............48
CAN Communication Unit ........................................48
Major Component and Functions ............................48
Schematic ................................................................49
Wiring Diagram - AUTO/L - .....................................50
Terminal and Reference Value for BCM ..................52
Terminal and Reference Value for IPDM E/R ..........54
How to Proceed with Trouble Diagnosis ..................54
Preliminary Check ...................................................55
CONSULT-III Functions (BCM) ...............................56
CONSULT-III Functions (IPDM E/R) .......................57
Symptom Chart ........................................................58
Lighting Switch Inspection .......................................58
Optical sensor System Inspection ...........................59
Removal and Installation of Optical Sensor .............60
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LT-2
HEADLAMP AIMING CONTROL ......................61
Schematic ............................................................ ...61
Wiring Diagram - H/AIM - .......................................62
Removal and Installation ........................................64
Switch Circuit Inspection ........................................65
FRONT FOG LAMP ...........................................66
Component Parts and Harness Connector Loca-
tion ....................................................................... ...
66
System Description .................................................66
CAN Communication System Description ..............67
CAN Communication Unit .......................................67
Wiring Diagram - F/FOG - ......................................68
Terminal and Reference Value for BCM .................69
Terminal and Reference Value for IPDM E/R .........70
How to Proceed with Trouble Diagnosis .................71
Preliminary Check ..................................................71
CONSULT-III Functions (BCM) ..............................72
CONSULT-III Functions (IPDM E/R) ......................72
Front Fog Lamps Do Not Illuminate (Both Sides) ...72
Front Fog Lamp Does Not Illuminate (One Side) ...74
Aiming Adjustment ..................................................75
Bulb Replacement ..................................................76
Removal and Installation ........................................76
TURN SIGNAL AND HAZARD WARNING
LAMPS ...............................................................
78
Component Parts and Harness Connector Loca-
tion ....................................................................... ...
78
System Description .................................................78
CAN Communication System Description ..............80
CAN Communication Unit .......................................80
Schematic ...............................................................81
Wiring Diagram - TURN - ........................................82
Terminal and Reference Value for BCM .................84
Terminal and Reference Value for Rear Combina-
tion Lamp Control Unit ............................................
86
How to Proceed with Trouble Diagnosis .................88
Preliminary Check ..................................................88
CONSULT-III Functions (BCM) ..............................89
Turn Signal Lamp Does Not Operate .....................90
Rear Turn Signal Lamp Does Not Operate ............92
Hazard Warning Lamp Does Not Operate But
Turn Signal Lamp Operates ...................................
94
Bulb Replacement (Front Turn Signal Lamp) .........95
Bulb Replacement (Rear Turn Signal Lamp) ..........95
Removal and Installation of Front Turn Signal
Lamp .......................................................................
95
Removal and Installation of Rear Turn Signal
Lamp .......................................................................
95
Removal and Installation of Rear Combination
Lamp Control Unit ...................................................
95
LIGHTING AND TURN SIGNAL SWITCH .........96
Removal and Installation ..................................... ...96
HAZARD SWITCH .............................................97
Removal and Installation ..................................... ...97
COMBINATION SWITCH ..................................98
Wiring Diagram - COMBSW - .............................. ...98
Combination Switch Reading Function ...................98
Terminal and Reference Value for BCM .................99
CONSULT-III Functions (BCM) .............................103
Combination Switch Inspection .............................104
Removal and Installation .......................................107
STOP LAMP .....................................................108
Component Parts and Harness Connector Loca-
tion ....................................................................... .
108
System Description ...............................................108
Schematic .............................................................109
Wiring Diagram - STOP/L - ...................................110
Terminal and Reference Value for Rear Combina-
tion Lamp Control Unit ......................................... .
112
Stop Lamp Does Not Operate ...............................112
High-Mounted Stop Lamp .....................................114
Stop Lamp .............................................................115
Rear Combination Lamp Control Unit ...................115
BACK-UP LAMP ............................................ ..116
Wiring Diagram - BACK/L - .................................. .116
Bulb Replacement .................................................117
Removal and Installation .......................................117
PARKING, LICENSE PLATE AND TAIL
LAMPS ..............................................................
118
Component Parts and Harness Connector Loca-
tion ....................................................................... .
118
System Description ...............................................118
CAN Communication System Description ............120
CAN Communication Unit .....................................120
Schematic .............................................................121
Wiring Diagram - TAIL/L - .....................................122
Terminal and Reference Value for BCM ...............126
Terminal and Reference Value for IPDM E/R .......127
Terminal and Reference Value for Rear Combina-
tion Lamp Control Unit ......................................... .
128
How to Proceed with Trouble Diagnosis ...............128
Preliminary Check .................................................128
CONSULT-III Functions (BCM) .............................129
CONSULT-III Functions (IPDM E/R) .....................129
Parking, License Plate and Side Marker Lamps
Do Not Illuminate ..................................................
129
Tail Lamp Does Not Operate ................................133
Parking, License Plate, Side Maker and Tail
Lamps Do Not Turn OFF (After Approx. 10 Min-
utes) ......................................................................
134
License Plate Lamp ..............................................135
Front Parking Lamp ..............................................135
Tail Lamp ..............................................................135
Front Side Marker Lamp .......................................135
Rear Side Marker Lamp ........................................136
Rear Combination Lamp Control Unit ...................136
REAR COMBINATION LAMP ..........................137
Bulb Replacement ................................................ .137
Removal and Installation .......................................137
INTERIOR ROOM LAMP ..................................138
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LT-3
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Component Parts and Harness Connector Loca-
tion ......................................................................
..
138
System Description ...............................................138
Schematic .............................................................143
Wiring Diagram - ROOM/L - ..................................145
Terminal and Reference Value for BCM ...............153
How to Proceed with Trouble Diagnosis ...............154
Preliminary Check .................................................154
CONSULT-III Functions (BCM) .............................155
Interior Room Lamp Control Does Not Operate ....157
Map Lamp Control Does Not Operate ...................158
Personal Lamp Control Does Not Operate ...........160
Ignition Keyhole Illumination Control Does Not
Operate .................................................................
161
All Step Lamps Do Not Operate ............................162
All Interior Room Lamps Do Not Operate .............164
Bulb Replacement ............................................... ..164
Removal and Installation .......................................166
ILLUMINATION ...............................................169
System Description ................................................169
CAN Communication System Description .............170
CAN Communication Unit ......................................170
Schematic ..............................................................171
Wiring Diagram - ILL - ...........................................173
Bulb Replacement .................................................181
Removal and Installation .......................................182
BULB SPECIFICATIONS ................................183
Headlamp ..............................................................183
Exterior Lamp ........................................................183
Interior Lamp/Illumination ......................................183
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LT-4
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612924
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
General Precaution for Service OperationINFOID:0000000001328264
 Never work with wet hands.
 Xenon headlamp includes high voltage generating part. Be sure to disconnect battery negative cable (negative terminal) or power
fuse before removing, installing, or touching the xenon headlamp
(including lamp bulb).
 Turn the lighting switch OFF before disconnecting and connecting the connector.
 When turning the xenon headlamp on and while it is illuminated, never touch the harness, bulb, and socket of the headlamp.
 When checking the headlamp on/off operation, check it on vehicle
and with the power connected to the vehicle-side connector.
 Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not touch the headl amp bulb just after the headlamp is turned off, because
it is very hot.
 Install the xenon headlamp bulb socket co rrectly. If it is installed improperly, high-voltage leak or corona dis-
charge may occur that can melt the bulb, connecto r, and housing. Do not illuminate the xenon headlamp
bulb out of the headlamp housing. Doing so can cause fire and harm your eyes.
 When the bulb has burned out, wrap it in a thick vinyl bag and discard. Do not break the bulb.
 Leaving the bulb removed from the headlamp housing for a long period of time can deteriorate the perfor- mance of the lens and reflector (dirt, clouding). Al ways prepare a new bulb and have it on hand when replac-
ing the bulb.
 When adjusting the headlamp aiming, turn the aiming adjus tment screw only in the tightening direction. (If it
is necessary to loosen the screw, first fully loosen the screw, and then turn it in the tightening direction.)
 Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
PKID0793E
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HEADLAMP - XENON TYPE -LT-5
< SERVICE INFORMATION >
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HEADLAMP - XENON TYPE -
Component Parts and Har ness Connector LocationINFOID:0000000001328265
System DescriptionINFOID:0000000001328266
Control of the headlamp system operation is dependent upon t he position of the combination switch (lighting
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) through the CAN communication lines. The CPU (central
processing unit) located in the IPDM E/R contro ls the headlamp high and headlamp low relay coils. These
relays, when energized, direct power to the respective headlamps, which then illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move, even a xenon head lamp bulb comes
out, and a high beam and a low beam are changed.
OUTLINE
Power is supplied at all times
 to headlamp high relay, located in IPDM E/R
 to headlamp low relay, located in IPDM E/R and
 to ignition relay, located in IPDM E/R, from battery direct,
 through 10A fuse (No. 71, located in IPDM E/R)
 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 M, located in fuse, fusible link and relay box)
 to BCM terminal 55,
 through 15A fuse [No. 22, located in fuse block (J/B)]
 to BCM terminal 42,
 through 10A fuse [No. 19, located in fuse block (J/B)]
 to combination meter terminal 8.
With ignition switch in ON or START position, power is supplied
 to ignition relay, located in IPDM E/R, from battery direct
 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)]
PKIC9683E
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