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LIGHTING SYSTEM

K ELECTRICAL

SECTION
LIGHTING SYSTEM
LT B

E
CONTENTS
PRECAUTIONS ......................................................... 5 . High Beam Indicator Lamp Does Not Illuminate .... 26 . F
Precautions for Supplemental Restraint System Headlamp Low Beam Does Not Illuminate (Both
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Sides) .................................................................... 26
.
SIONER" ................................................................. 5
. Headlamp Low Beam Does Not Illuminate (One G
Precautions for Battery Service ............................... 5 . Side) ...................................................................... 29
.
General Precautions for Service Operations ........... 5 . Headlamps Do Not Turn OFF ................................ 30 .
Wiring Diagrams and Trouble Diagnosis ................. 6 . General Information for Xenon Headlamp Trouble
H
HEADLAMP (FOR USA) ........................................... 7 . Diagnosis ............................................................... 32
.
Component Parts and Harness Connector Location 7 ..... Caution: ................................................................. 32
.
System Description ................................................. 7 . Xenon Headlamp Trouble Diagnosis ..................... 32 .
OUTLINE .............................................................. 7
. Aiming Adjustment ................................................. 33 . I
HEADLAMP OPERATION ................................... 8 . PREPARATION BEFORE ADJUSTING ............. 33 .
COMBINATION SWITCH READING FUNCTION 9 ..... LOW BEAM AND HIGH BEAM .......................... 33 .
EXTERIOR LAMP BATTERY SAVER CONTROL 9 ..... ADJUSTMENT USING AN ADJUSTMENT J
AUTO LIGHT OPERATION (IF EQUIPPED) ........ 9 . SCREEN (LIGHT/DARK BORDERLINE) ........... 34 .
VEHICLE SECURITY SYSTEM ........................... 9 . Bulb Replacement ................................................. 34 .
XENON HEADLAMP ............................................ 9 . HEADLAMP (UPPER) LOW BEAM .................... 34 .
LT
CAN Communication System Description ............... 9 . HEADLAMP (LOWER) HIGH BEAM/FOG LAMP 35 ...
CAN Communication Unit ....................................... 9 . PARKING LAMP (CLEARANCE LAMP) ............. 35 .
Schematic ............................................................. 10
. FRONT TURN SIGNAL/PARKING LAMP .......... 35 .
Wiring Diagram -- H/LAMP -- ...............................11 . Removal and Installation ....................................... 35 . L
Terminals and Reference Values for BCM ............ 15 . REMOVAL .......................................................... 35 .
Terminals and Reference Values for IPDM E/R .... 15 . INSTALLATION .................................................. 36 .
How to Proceed With Trouble Diagnosis ............... 16 . Disassembly .......................................................... 36. M
Preliminary Check ................................................. 16 . Assembly ............................................................... 37
.
CHECK POWER SUPPLY AND GROUND CIR- Servicing to Replace Headlamps When Damaged 37 ...
CUIT ................................................................... 16
. REMOVAL AND INSTALLATION ....................... 37 .
CONSULT-II Functions (BCM) .............................. 18 . HEADLAMP (FOR CANADA) - DAYTIME LIGHT
CONSULT-II BASIC OPERATION ...................... 18 . SYSTEM - ................................................................. 38
.
WORK SUPPORT .............................................. 19 . Component Parts and Harness Connector Location 38 ...
DATA MONITOR ................................................ 19 . System Description ................................................ 38 .
ACTIVE TEST .................................................... 20 . OUTLINE ............................................................ 38.
CONSULT-II Functions (IPDM E/R) ...................... 21 . HEADLAMP OPERATION .................................. 39 .
CONSULT-II OPERATION ................................. 21 . DAYTIME LIGHT OPERATION .......................... 41 .
DATA MONITOR ................................................ 22 . OPERATION ....................................................... 41 .
ACTIVE TEST .................................................... 22 . COMBINATION SWITCH READING FUNCTION 41 ...
Headlamp High Beam Does Not Illuminate (Both EXTERIOR LAMP BATTERY SAVER CONTROL 41 ...
Sides) .................................................................... 23
. AUTO LIGHT OPERATION (IF EQUIPPED) ...... 41 .
Headlamp High Beam Does Not Illuminate (One VEHICLE SECURITY SYSTEM ......................... 42 .
Side) ...................................................................... 25
. XENON HEADLAMP .......................................... 42 .

Edition: 2004 September LT-1 2005 G35 Coupe
CAN Communication System Description ............. 42 . COMBINATION SWITCH READING FUNCTION ...78
CAN Communication Unit ...................................... 42 . EXTERIOR LAMP BATTERY SAVER CONTROL ...78
Schematic .............................................................. 43
. DELAY TIMER FUNCTION .................................78 .
Wiring Diagram -- DTRL -- .................................. 44 . CAN Communication System Description .............78 .
Terminals and Reference Values for Daytime Light CAN Communication Unit ......................................78 .
Control Unit ............................................................ 50
. Major Components and Functions .........................78 .
Terminals and Reference Values for BCM ............. 51 . Schematic ..............................................................79
.
Terminals and Reference Values for IPDM E/R ..... 51 . Wiring Diagram -- AUTO/L -- ...............................80 .
How to Proceed With Trouble Diagnosis ............... 52 . Terminals and Reference Values for BCM .............83 .
Preliminary Check ................................................. 52 . Terminals and Reference Values for IPDM E/R .....84 .
CHECK POWER SUPPLY AND GROUND CIR- How to Proceed With Trouble Diagnosis ...............84 .
CUIT ................................................................... 52
. Preliminary Check ..................................................85 .
CONSULT-II Functions (BCM) ............................... 54 . SETTING CHANGE FUNCTIONS ......................85 .
CONSULT-II BASIC OPERATION ...................... 54 . CHECK POWER SUPPLY AND GROUND CIR-
WORK SUPPORT .............................................. 55 . CUIT ....................................................................85
.
DATA MONITOR ................................................. 55 . CONSULT-II Functions (BCM) ...............................86 .
ACTIVE TEST .................................................... 56 . CONSULT-II BASIC OPERATION ......................86 .
CONSULT-II Functions (IPDM E/R) ....................... 57 . WORK SUPPORT ..............................................87 .
CONSULT-II OPERATION .................................. 57 . DATA MONITOR .................................................87 .
DATA MONITOR ................................................. 58 . ACTIVE TEST .....................................................88 .
ACTIVE TEST .................................................... 58 . CONSULT-II Functions (IPDM E/R) .......................89 .
Daytime Light Control Does Not Operate Properly 59 ... CONSULT-II OPERATION ..................................89 .
Headlamp High Beam Does Not Illuminate (Both DATA MONITOR .................................................90 .
Sides) .................................................................... 61
. ACTIVE TEST .....................................................90 .
RH High Beam Does Not Illuminate But RH Low Symptom Chart ......................................................91 .
Beam Illuminates ................................................... 63 . Lighting Switch Inspection .....................................91 .
LH High Beam Does Not Illuminate But LH Low Optical sensor System Inspection ..........................92 .
Beam Illuminates ................................................... 65 . Removal and Installation of Optical Sensor ...........94 .
Headlamp Low Beam Does Not Illuminate (Both REMOVAL ...........................................................94 .
Sides) .................................................................... 67
. INSTALLATION ...................................................94 .
RH Low Beam Does Not Illuminate But RH High FRONT FOG LAMP ..................................................95 .
Beam Illuminates ................................................... 69 . Component Parts and Harness Connector Location ...95
LH Low Beam Does Not Illuminate But LH High System Description ................................................95 .
Beam Illuminates ................................................... 70 . OUTLINE ............................................................95.
General Information for Xenon Headlamp Trouble FOG LAMP OPERATION (FOR USA) ................96 .
Diagnosis ............................................................... 71
. FOG LAMP OPERATION (FOR CANADA) ........96 .
Caution: ................................................................. 71
. COMBINATION SWITCH READING FUNCTION ...97
Xenon Headlamp Trouble Diagnosis ..................... 71 . EXTERIOR LAMP BATTERY SAVER CONTROL ...97
Aiming Adjustment ................................................. 72 . CAN Communication System Description .............97 .
PREPARATION BEFORE ADJUSTING ............. 72 . CAN Communication Unit ......................................97 .
LOW BEAM AND HIGH BEAM .......................... 72 . Wiring Diagram -- F/FOG -- .................................98 .
ADJUSTMENT USING AN ADJUSTMENT FOR USA ............................................................98.
SCREEN (LIGHT/DARK BORDERLINE) ........... 73 . FOR CANADA .................................................. 100 .
Bulb Replacement ................................................. 73 . Terminals and Reference Values for BCM ........... 102 .
HEADLAMP (UPPER) LOW BEAM .................... 73 . Terminals and Reference Values for IPDM E/R ... 102 .
HEADLAMP (LOWER) HIGH BEAM/FOG LAMP 74 ... How to Proceed With Trouble Diagnosis ............. 103 .
PARKING LAMP (CLEARANCE LAMP) ............. 74 . Preliminary Check ................................................ 103 .
FRONT TURN SIGNAL/PARKING LAMP .......... 74 . CHECK POWER SUPPLY AND GROUND CIR-
Removal and Installation ....................................... 74 . CUIT .................................................................. 103
.
REMOVAL .......................................................... 74 . CONSULT-II Functions (BCM) ............................. 104 .
INSTALLATION ................................................... 75 . CONSULT-II Functions (IPDM E/R) ..................... 104 .
Disassembly .......................................................... 75
. Front Fog lamps Do Not Illuminate (Both Sides)
Assembly ............................................................... 76
. (FOR USA) ........................................................... 105
.
Servicing to Replace Headlamps When Damaged 76 ... Front Fog Lamp Does Not Illuminate (One Side)
REMOVAL AND INSTALLATION ........................ 76 . (FOR USA) ........................................................... 107
.
AUTO LIGHT SYSTEM ............................................ 77 . Front Fog lamps Do Not Illuminate (Both Sides)
Component Parts and Harness Connector Location 77 ... (FOR CANADA) ................................................... 108 .
System Description ................................................ 77 . LH Front Fog Lamp Does Not Illuminate (FOR CAN-
OUTLINE ............................................................ 77
. ADA) .................................................................... 109
.

Edition: 2004 September LT-2 2005 G35 Coupe
RH Front Fog Lamp Does Not Illuminate (FOR CAN- Lamp .................................................................... 138
.
ADA) .....................................................................112
. REMOVAL (WITH REAR SPOILER) ................ 138 . A
Bulb Replacement ................................................112 . INSTALLATION ................................................ 138 .
TURN SIGNAL AND HAZARD WARNING LAMPS ..113 REMOVAL (WITHOUT REAR SPOILER) ........ 138 .
Component Parts and Harness Connector Location ..113 INSTALLATION ................................................ 138 . B
System Description ..............................................113 . Removal and Installation of Rear Combination
TURN SIGNAL OPERATION ............................113 . Lamp (Stop Lamp) ............................................... 138 .
HAZARD LAMP OPERATION ...........................114 . STEP LAMP ........................................................... 139.
REMOTE KEYLESS ENTRY SYSTEM OPERA- Bulb Replacement ............................................... 139 . C
TION ..................................................................115
. Removal and Installation ..................................... 139 .
COMBINATION SWITCH READING FUNCTION ..115 REMOVAL ........................................................ 139 .
CAN Communication System Description ............115 . INSTALLATION ................................................ 139 . D
CAN Communication Unit ....................................115 . BACK-UP LAMP .................................................... 140 .
Schematic ............................................................116
. Wiring Diagram -- BACK/L -- ............................. 140 .
Wiring Diagram -- TURN -- ................................117 . A/T MODELS .................................................... 140 . E
Terminals and Reference Values for BCM .......... 120 . M/T MODELS ................................................... 141 .
How to Proceed With Trouble Diagnosis ............. 121 . Bulb Replacement ............................................... 142 .
Preliminary Check ............................................... 121 . Removal and Installation ..................................... 142 .
CHECK POWER SUPPLY AND GROUND CIR- PARKING, LICENSE PLATE AND TAIL LAMPS .. 143 . F
CUIT ................................................................. 121
. Component Parts and Harness Connector Location 143 .
CONSULT-II Functions (BCM) ............................ 123 . System Description .............................................. 143 .
CONSULT-II BASIC OPERATION .................... 123 . OPERATION BY LIGHTING SWITCH .............. 144 . G
DATA MONITOR .............................................. 124 . COMBINATION SWITCH READING FUNCTION 144 .
ACTIVE TEST .................................................. 124 . EXTERIOR LAMP BATTERY SAVER CONTROL 144 .
Turn Signal Lamp Does Not Operate .................. 124 . CAN Communication System Description ........... 145 . H
Hazard Warning Lamp Does Not Operate But Turn CAN Communication Unit .................................... 145 .
Signal Lamp Operates ........................................ 126 . Schematic ............................................................ 146
.
Turn Signal Indicator Lamp Does Not Operate ... 127 . Wiring Diagram -- TAIL/L -- ............................... 147 .
I
Bulb Replacement (Front Turn Signal Lamp) ...... 127 . Terminals and Reference Values for BCM ........... 151 .
Bulb Replacement (Rear Turn Signal Lamp) ...... 127 . Terminals and Reference Values for IPDM E/R ... 151 .
Removal and Installation of Front Turn Signal Lamp 127 . How to Proceed With Trouble Diagnosis ............. 152 .
Removal and Installation of Rear Turn Signal Lamp 127 . Preliminary Check ............................................... 152 . J
LIGHTING AND TURN SIGNAL SWITCH ............. 128 . CHECK POWER SUPPLY AND GROUND CIR-
Removal and Installation ..................................... 128 . CUIT ................................................................. 152
.
REMOVAL ........................................................ 128 . CONSULT-II Functions (BCM) ............................. 153 . LT
INSTALLATION ................................................ 128 . CONSULT-II Functions (IPDM E/R) ..................... 153 .
HAZARD SWITCH ................................................. 129 . Parking, License Plate and Tail Lamps Do Not Illu-
Removal and Installation (M/T) ........................... 129 . minate .................................................................. 153
. L
REMOVAL ........................................................ 129 . Parking, License Plate, Side Marker and Tail Lamps
INSTALLATION ................................................ 129 . Do Not Turn OFF (After Approx. 10 Minutes) ...... 159 .
Removal and Installation (A/T) ............................ 129 . Bulb Replacement ............................................... 159 .
REMOVAL ........................................................ 129 . FRONT SIDE MARKER LAMP ........................ 159 . M
INSTALLATION ................................................ 129 . LICENSE PLATE LAMP ................................... 159 .
COMBINATION SWITCH ....................................... 130 . FRONT TURN SIGNAL (PARKING) LAMP ...... 159 .
Wiring Diagram -- COMBSW -- ......................... 130 . TAIL LAMP ....................................................... 159 .
Combination Switch Reading Function ............... 131 . Removal and Installation ..................................... 160 .
CONSULT-II Function (BCM) .............................. 131 . FRONT SIDE MARKER LAMP ........................ 160 .
CONSULT-II BASIC OPERATION .................... 131 . LICENSE PLATE LAMP ................................... 160 .
DATA MONITOR .............................................. 132 . FRONT TURN SIGNAL (PARKING) LAMP ...... 160 .
Combination Switch Inspection ........................... 133 . TAIL LAMP ....................................................... 160 .
Removal and Installation ..................................... 135 . REAR COMBINATION LAMP ................................ 161 .
STOP LAMP .......................................................... 136 . Bulb Replacement ............................................... 161 .
Wiring Diagram -- STOP/L -- ............................. 136 . Removal and Installation ..................................... 161 .
Bulb Replacement of High-Mounted Stop Lamp . 138 REMOVAL ........................................................ 161 .
WITH REAR SPOILER .................................... 138 . INSTALLATION ................................................ 161 .
WITHOUT REAR SPOILER ............................. 138 . VANITY MIRROR LAMP ........................................ 162 .
Bulb Replacement of Rear Combination Lamp (Stop Bulb Replacement ............................................... 162 .
Lamp) .................................................................. 138
. MAP LAMP ............................................................ 163.
Removal and Installation of High-Mounted Stop

Edition: 2004 September LT-3 2005 G35 Coupe
Bulb Replacement ............................................... 163 . Preliminary Check ................................................ 180 .
Removal and Installation ..................................... 163 . CHECK POWER SUPPLY AND GROUND CIR-
REMOVAL ........................................................ 163
. CUIT .................................................................. 180
.
INSTALLATION ................................................. 163 . CONSULT-II Functions (BCM) ............................. 181 .
TRUNK ROOM LAMP ............................................ 164 . CONSULT-II BASIC OPERATION .................... 181 .
Bulb Replacement, Removal and Installation ...... 164 . WORK SUPPORT ............................................ 182 .
REMOVAL ........................................................ 164
. DATA MONITOR ............................................... 182 .
INSTALLATION ................................................. 164 . ACTIVE TEST ................................................... 183 .
IGNITION KEY HOLE ILLUMINATION .................. 165 . Map Lamp Control Does Not Operate ................. 183 .
Bulb Replacement, Removal and Installation ...... 165 . Ignition Key Hole Illumination Control Does Not
REMOVAL ........................................................ 165
. Operate ................................................................ 185
.
INSTALLATION ................................................. 165 . All Step Lamps Does Not Operate ....................... 186 .
GLOVE BOX LAMP ............................................... 166 . All Interior Room Lamps Does Not Operate ........ 187 .
Bulb Replacement, Removal and Installation ...... 166 . Bulb Replacement ................................................ 188 .
REMOVAL ........................................................ 166
. MAP LAMP ....................................................... 188 .
INSTALLATION ................................................. 166 . STEP LAMP ...................................................... 188 .
ASHTRAY ILLUMINATION .................................... 167 . Removal and Installation ...................................... 188 .
Bulb Replacement, Removal and Installation ...... 167 . MAP LAMP ....................................................... 188 .
REMOVAL ........................................................ 167
. STEP LAMP ...................................................... 188 .
INSTALLATION ................................................. 167 . ILLUMINATION ....................................................... 189 .
CIGARETTE LIGHTER ILLUMINATION ................ 168 . System Description .............................................. 189 .
Bulb Replacement, Removal and Installation ...... 168 . ILLUMINATION OPERATION BY LIGHTING
REMOVAL ........................................................ 168
. SWITCH ............................................................ 189
.
INSTALLATION ................................................. 168 . EXTERIOR LAMP BATTERY SAVER CONTROL .190
INTERIOR ROOM LAMP ....................................... 169 . CAN Communication System Description ........... 191 .
Component Parts and Harness Connector Location 169 . CAN Communication Unit .................................... 191 .
System Description .............................................. 169. Schematic ............................................................ 192
.
POWER SUPPLY AND GROUND .................... 170 . Wiring Diagram -- ILL -- ..................................... 193 .
SWITCH OPERATION ..................................... 170 . Removal and Installation ...................................... 202 .
ROOM LAMP TIMER OPERATION .................. 171 . GLOVE BOX LAMP .......................................... 202 .
INTERIOR LAMP BATTERY SAVER CONTROL 172 . BULB SPECIFICATIONS ....................................... 203 .
Schematic ............................................................ 173
. Headlamp ............................................................. 203
.
Wiring Diagram -- ROOM/L -- ............................ 174 . Exterior Lamp ....................................................... 203
.
Terminals and Reference Values for BCM ........... 179 . Interior Lamp/Illumination ..................................... 203 .
How to Proceed With Trouble Diagnosis ............. 180 .

Edition: 2004 September LT-4 2005 G35 Coupe
PRECAUTIONS

PRECAUTIONS PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS00AIG

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity 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 C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
q To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Precautions for Battery Service AKS00AUQ

Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the H
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
I
General Precautions for Service Operations AKS00AII

q Never work with wet hands.
q Xenon headlamp includes high voltage generating part. Be sure J
to disconnect battery negative cable (negative terminal) or
power fuse before removing, installing, or touching the xenon
headlamp (including lamp bulb).
LT
q Turn the lighting switch OFF before disconnecting and connect-
ing the connector.
q When turning the xenon headlamp on and while it is illuminated,
L
never touch the harness, bulb, and socket of the headlamp.
q When checking the headlamp on/off operation, check it on vehi- PKIA0183E
cle and with the power connected to the vehicle-side connector.
M
q Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not
touch the headlamp bulb just after the headlamp is turned off, because it is very hot.
q Install the xenon headlamp bulb socket correctly. If it is installed
improperly, high-voltage leak or corona discharge may occur
that can melt the bulb, connector, and housing. Do not illuminate
the xenon headlamp bulb out of the headlamp housing. Doing
so can cause fire and harm your eyes.
q When the bulb has burned out, wrap it in a thick vinyl bag and
discard. Do not break the bulb.
q Leaving the bulb removed from the headlamp housing for a long
period of time can deteriorate the performance of the lens and
reflector (dirt, clouding). Always prepare a new bulb and have it
on hand when replacing the bulb. EL-3422D

q When adjusting the headlamp aiming, turn the aiming adjust-
ment 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.)
q Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.

Edition: 2004 September LT-5 2005 G35 Coupe
PRECAUTIONS

Wiring Diagrams and Trouble Diagnosis AKS00AIJ

When you read wiring diagrams, refer to the following:
q Refer to GI-14, "How to Read Wiring Diagrams" in GI section.
q Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution in PG section.
When you perform trouble diagnosis, refer to the following:
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.
q Refer to GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.

Edition: 2004 September LT-6 2005 G35 Coupe
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010
A
Component Parts and Harness Connector Location AKS00AC6

PKIB6095E
LT
System Description AKS00CO5

Control of headlamp system operation is dependent upon the position of the combination switch (lighting
switch). When the lighting switch is placed in the 2ND position, BCM (body control module) receives input sig- L
nal requesting the headlamps (and tail lamps) illuminate. This input signal is communicated to IPDM E/R
(intelligent power distribution module engine room) across CAN communication lines. The CPU (central pro-
cessing unit) of IPDM E/R controls headlamp high and headlamp low relay coils. These relays, when ener-
M
gized, direct power to the respective headlamps, which then illuminate.
OUTLINE
Power is supplied at all times
q to ignition relay, located in IPDM E/R,
q to headlamp high relay, located in IPDM E/R and
q to headlamp low relay, located in IPDM E/R, from battery direct,
q through 10A fuse (No. 71, located in IPDM E/R)
q to CPU located in IPDM E/R,
q through 15A fuse (No. 78, located in IPDM E/R)
q to CPU located in IPDM E/R,
q through 50A fusible link (letter F, located in fuse, fusible link and relay box)
q to BCM terminal 55,
q through 10A fuse [No. 18, located in fuse block (J/B)]
q to BCM terminal 42,

Edition: 2004 September LT-7 2005 G35 Coupe
HEADLAMP (FOR USA)

q through 10A fuse [No. 19, located in fuse block (J/B)]
q to combination meter terminal 21.
With ignition switch in ON or START position, power is supplied
q to ignition relay, located in IPDM E/R, from battery direct,
q to CPU located in IPDM E/R
q through ignition relay, located in IPDM E/R,
q through 10A fuse [No. 1, located in fuse block (J/B)]
q to BCM terminal 38,
q through 10A fuse [No. 14, located in fuse block (J/B)]
q to combination meter terminals 22 and 23.
With ignition switch in ACC or ON position, power is supplied
q through 10A fuse [No. 6, located in fuse block (J/B)]
q to BCM terminal 11.
Ground is supplied
q to BCM terminal 52
q through grounds M30 and M66,
q to IPDM E/R terminals 38 and 60
q through grounds E17 and E43,
q to combination meter terminals 1, 24 and 25
q through grounds M30 and M66.
HEADLAMP OPERATION
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal requesting headlamps to illuminate.
This input signal is communicated to IPDM E/R across CAN communication lines. The CPU located in the
IPDM E/R controls headlamp low relay coil, which when energized, directs power
q through 15A fuse (No. 76, located in IPDM E/R)
q through IPDM E/R terminal 20
q to front combination lamp RH terminal 3,
q through 15A fuse (No. 86, located in IPDM E/R)
q through IPDM E/R terminal 30
q to front combination lamp LH terminal 3.
Ground is supplied
q to front combination lamp RH terminal 4
q through grounds E17 and E43,
q to front combination lamp LH terminal 4
q through grounds E17 and E43.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input signal
requesting the headlamp high beams to illuminate. This input signal is communicated to IPDM E/R across the
CAN communication lines. The CPU located in the IPDM E/R controls headlamp high relay coil and low relay
coil, which when energized, directs power
q through 15A fuse (No. 76, located in IPDM E/R)
q through IPDM E/R terminal 20
q to front combination lamp RH terminal 3,
q through 15A fuse (No. 86, located in IPDM E/R)
q through IPDM E/R terminal 30
q to front combination lamp LH terminal 3,
q through 10A fuse (No. 72, located in IPDM E/R)

Edition: 2004 September LT-8 2005 G35 Coupe
HEADLAMP (FOR USA)

q through IPDM E/R terminal 27
q to front combination lamp RH terminal 2, A
q through 10A fuse (No. 74, located in IPDM E/R)
q through IPDM E/R terminal 28
B
q to front combination lamp LH terminal 2.
Ground is supplied
q to front combination lamp RH terminals 4 and 8 C
q through grounds E17 and E43,
q to front combination lamp LH terminals 4 and 8
q through grounds E17 and E43. D
With power and ground supplied, the high beam and low beam headlamps illuminate.
High beam indicator illuminates when combination meter receives input signal requesting high beam indicator
to illuminate. This is communicated to BCM across the CAN communication lines. E
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
F
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.
G
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 (IF EQUIPPED) H
Refer to LT-77, "System Description" in "AUTO LIGHT SYSTEM".
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to BL-90, "VEHICLE I
SECURITY (THEFT WARNING) SYSTEM" .
XENON HEADLAMP
J
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. LT
Followings are some advantages of the xenon type headlamp.
q The light produced by the headlamps is white color similar to sunlight that is easy to the eyes.
q Light output is nearly double that of halogen headlamps, affording increased area of illumination. L
q 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.
q Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load. M

CAN Communication System Description AKS00AC8

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 Unit AKS00AC9

Refer to LAN-4, "CAN Communication Unit" .

Edition: 2004 September LT-9 2005 G35 Coupe
HEADLAMP (FOR USA)

Schematic AKS00ACA

TKWM2184E

Edition: 2004 September LT-10 2005 G35 Coupe
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- AKS00ACB

TKWM2185E

Edition: 2004 September LT-11 2005 G35 Coupe
HEADLAMP (FOR USA)

TKWM2186E

Edition: 2004 September LT-12 2005 G35 Coupe
HEADLAMP (FOR USA)

TKWM2187E

Edition: 2004 September LT-13 2005 G35 Coupe
HEADLAMP (FOR USA)

TKWM2604E

Edition: 2004 September LT-14 2005 G35 Coupe
HEADLAMP (FOR USA)

Terminals and Reference Values for BCM AKS00CO6

A
Measuring condition
Terminal Wire
Signal name Ignition Reference value
No. color Operation or condition
switch B

C
Lighting, turn, wiper OFF
2 G/R Combination switch input 5 ON
Wiper dial position 4

D
PKIB3468E

3 G Combination switch input 4
4 W/L Combination switch input 3 E
5 W/G Combination switch input 2 Lighting, turn, wiper OFF
ON
Wiper dial position 4

6 W/R Combination switch input 1 F
PKIB3469E

11 LG Ignition switch (ACC) ACC -- Battery voltage
G

Lighting, turn, wiper OFF H
32 GY Combination switch output 5 ON
Wiper dial position 4

PKIB3470E I
33 L Combination switch output 4
34 PU Combination switch output 3
J
35 Y/R Combination switch output 2 Lighting, turn, wiper OFF
ON
Wiper dial position 4

36 Y Combination switch output 1 LT
PKIB3471E

38 W/L Ignition switch (ON) ON -- Battery voltage
39 L CAN - H -- -- -- L
40 P CAN - L -- -- --
42 GY Battery power supply OFF -- Battery voltage
M
52 B Ground ON -- Approx. 0V
55 W/R Battery power supply OFF -- Battery voltage

Terminals and Reference Values for IPDM E/R AKS00CO7

Measuring condition
Terminal Wire
Signal name Ignition Reference value
No. color Operation or condition
switch

Lighting switch OFF Approx. 0V
20 R Headlamp low (RH) ON
2ND position ON Battery voltage
Lighting switch OFF Approx. 0V
27 BR Headlamp high (RH) ON HIGH or PASS
position ON Battery voltage

Lighting switch OFF Approx. 0V
28 R/Y Headlamp high (LH) ON HIGH or PASS
position ON Battery voltage

Edition: 2004 September LT-15 2005 G35 Coupe
HEADLAMP (FOR USA)

Measuring condition
Terminal Wire
Signal name Ignition Reference value
No. color Operation or condition
switch

Lighting switch OFF Approx. 0V
30 R/B Headlamp low (LH) ON
2ND position ON Battery voltage
38 B/R Ground ON -- Approx. 0V
48 L CAN - H -- -- --
49 P CAN - L -- -- --
60 B/R Ground ON -- Approx. 0V

How to Proceed With Trouble Diagnosis AKS00CO8

1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-7, "System Description" .
3. Perform the preliminary check. Refer to LT-16, "Preliminary Check" .
4. Check symptom and repair or replace the malfunctioning parts.
5. Does headlamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary Check AKS00CO9

CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Unit Power source Fuse and fusible link No.
F
Battery
18
BCM

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