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LIGHTING SYSTEM

K ELECTRICAL

SECTION
LIGHTING SYSTEM
LT B

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

Edition; 2004 September LT-1 2005 G35 Sedan
Schematic .............................................................. 43
. CAN Communication System Description .............78 .
Wiring Diagram -- DTRL -- .................................. 44 . CAN Communication Unit ......................................78 .
Terminals and Reference Values for Daytime Light Major Components and Functions .........................78 .
Control Unit ............................................................ 50
. Schematic ..............................................................79
.
Terminals and Reference Values for BCM ............. 51 . Wiring Diagram -- AUTO/L -- ...............................80 .
Terminals and Reference Values for IPDM E/R ..... 51 . Terminals and Reference Values for BCM .............83 .
How to Proceed With Trouble Diagnosis ............... 52 . Terminals and Reference Values for IPDM E/R .....84 .
Preliminary Check ................................................. 52 . How to Proceed With Trouble Diagnosis ...............84 .
CHECK POWER SUPPLY AND GROUND CIR- Preliminary Check ..................................................85 .
CUIT ................................................................... 52
. SETTING CHANGE FUNCTIONS ......................85 .
CONSULT-II Functions (BCM) ............................... 54 . CHECK POWER SUPPLY AND GROUND CIR-
CONSULT-II BASIC OPERATION ...................... 54 . CUIT ....................................................................85
.
WORK SUPPORT .............................................. 55 . CONSULT-II Functions (BCM) ...............................86 .
DATA MONITOR ................................................. 55 . CONSULT-II BASIC OPERATION ......................86 .
ACTIVE TEST .................................................... 56 . WORK SUPPORT ..............................................87 .
CONSULT-II Functions (IPDM E/R) ....................... 57 . DATA MONITOR .................................................87 .
CONSULT-II OPERATION .................................. 57 . ACTIVE TEST .....................................................88 .
DATA MONITOR ................................................. 58 . CONSULT-II Functions (IPDM E/R) .......................89 .
ACTIVE TEST .................................................... 58 . CONSULT-II OPERATION ..................................89 .
Daytime Light Control Does Not Operate Properly 59 ... DATA MONITOR .................................................90 .
Headlamp High Beam Does Not Illuminate (Both ACTIVE TEST .....................................................90 .
Sides) .................................................................... 61
. Symptom Chart ......................................................91 .
RH High Beam Does Not Illuminate But RH Low Lighting Switch Inspection .....................................91 .
Beam Illuminates ................................................... 63 . Optical sensor System Inspection ..........................92 .
LH High Beam Does Not Illuminate But LH Low Removal and Installation for Optical Sensor ..........94 .
Beam Illuminates ................................................... 65 . REMOVAL ...........................................................94 .
Headlamp Low Beam Does Not Illuminate (Both INSTALLATION ...................................................94 .
Sides) .................................................................... 67
. FRONT FOG LAMP ..................................................95 .
RH Low Beam Does Not Illuminate But RH High Component Parts and Harness Connector Location ...95
Beam Illuminates ................................................... 69 . System Description ................................................95 .
LH Low Beam Does Not Illuminate But LH High OUTLINE ............................................................95.
Beam Illuminates ................................................... 70 . FOG LAMP OPERATION (FOR USA) ................96 .
General Information for Xenon Headlamp Trouble FOG LAMP OPERATION (FOR CANADA) ........96 .
Diagnosis ............................................................... 71
. COMBINATION SWITCH READING FUNCTION ...97
Caution: ................................................................. 71
. EXTERIOR LAMP BATTERY SAVER CONTROL ...97
Xenon Headlamp Trouble Diagnosis ..................... 71 . CAN Communication System Description .............97 .
Aiming Adjustment ................................................. 72 . CAN Communication Unit ......................................97 .
PREPARATION BEFORE ADJUSTING ............. 72 . Wiring Diagram -- F/FOG -- .................................98 .
LOW BEAM AND HIGH BEAM .......................... 72 . FOR USA ............................................................98.
ADJUSTMENT USING AN ADJUSTMENT FOR CANADA .................................................. 100 .
SCREEN (LIGHT/DARK BORDERLINE) ........... 73 . Terminals and Reference Values for BCM ........... 102 .
Bulb Replacement ................................................. 73 . Terminals and Reference Values for IPDM E/R ... 102 .
HEADLAMP (UPPER) LOW BEAM .................... 73 . How to Proceed With Trouble Diagnosis ............. 103 .
HEADLAMP (LOWER) HIGH BEAM/FOG 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 ................................................... 74 . CONSULT-II Functions (IPDM E/R) ..................... 104 .
Disassembly .......................................................... 75
. Front Fog lamps Does 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 Does 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
.
COMBINATION SWITCH READING FUNCTION 78 ... RH Front Fog Lamp Does Not Illuminate (FOR CAN-
EXTERIOR LAMP BATTERY SAVER CONTROL 78 ... ADA) .................................................................... 112
.
DELAY TIMER FUNCTION ................................ 78 . Bulb Replacement ................................................ 112 .

Edition; 2004 September LT-2 2005 G35 Sedan
TURN SIGNAL AND HAZARD WARNING LAMPS ..113 INSTALLATION ................................................ 138 .
Component Parts and Harness Connector Location ..113 REMOVAL (WITHOUT REAR SPOILER) ........ 138 . A
System Description ..............................................113 . INSTALLATION ................................................ 138 .
TURN SIGNAL OPERATION ............................113 . Removal and Installation of Rear Combination
HAZARD LAMP OPERATION ...........................114 . Lamp (Stop Lamp) ............................................... 138 . B
REMOTE KEYLESS ENTRY SYSTEM OPERA- STEP LAMP ........................................................... 139.
TION ..................................................................115
. Bulb Replacement ............................................... 139 .
COMBINATION SWITCH READING FUNCTION ..115 Removal and Installation ..................................... 139 .
CAN Communication System Description ............115 . REMOVAL ........................................................ 139 . C
CAN Communication Unit ....................................115 . INSTALLATION ................................................ 139 .
Schematic ............................................................116
. BACK-UP LAMP .................................................... 140 .
Wiring Diagram -- TURN -- ................................117 . Wiring Diagram -- BACK/L -- ............................. 140 . D
Terminals and Reference Values for BCM .......... 120 . A/T MODELS .................................................... 140 .
How to Proceed With Trouble Diagnosis ............. 121 . M/T MODELS ................................................... 141 .
Preliminary Check ............................................... 121 . PARKING, LICENSE PLATE AND TAIL LAMPS .. 142 . E
CHECK POWER SUPPLY AND GROUND CIR- Component Parts and Harness Connector Location 142 .
CUIT ................................................................. 121
. System Description .............................................. 142 .
CONSULT-II Functions (BCM) ............................ 123 . OPERATION BY LIGHTING SWITCH .............. 143 .
CONSULT-II BASIC OPERATION .................... 123 . COMBINATION SWITCH READING FUNCTION 143 . F
DATA MONITOR .............................................. 124 . EXTERIOR LAMP BATTERY SAVER CONTROL 143 .
ACTIVE TEST .................................................. 124 . CAN Communication System Description ........... 144 .
Turn Signal Lamp Does Not Operate .................. 124 . CAN Communication Unit .................................... 144 . G
Hazard Warning Lamp Does Not Operate But Turn Schematic ............................................................ 145
.
Signal Lamp Operate .......................................... 126 . Wiring Diagram -- TAIL/L -- ............................... 146 .
Turn Signal Indicator Lamp Does Not Operate ... 127 . Terminals and Reference Values for BCM ........... 149 . H
Bulb Replacement (Front Turn Signal Lamp) ...... 128 . Terminals and Reference Values for IPDM E/R ... 149 .
Bulb Replacement (Rear Turn Signal Lamp) ...... 128 . How to Proceed With Trouble Diagnosis ............. 150 .
Removal and Installation of Front Turn Signal Lamp 128 . Preliminary Check ............................................... 150 .
I
Removal and Installation of Rear Turn Signal Lamp 128 . CHECK POWER SUPPLY AND GROUND CIR-
LIGHTING AND TURN SIGNAL SWITCH ............. 129 . CUIT ................................................................. 150
.
Removal and Installation ..................................... 129 . CONSULT-II Functions (BCM) ............................. 151 .
REMOVAL ........................................................ 129 . CONSULT-II Functions (IPDM E/R) ..................... 151 . J
INSTALLATION ................................................ 129 . Parking, License Plate and Tail Lamps Do Not Illu-
HAZARD SWITCH ................................................. 130 . minate .................................................................. 151
.
Removal and Installation (M/T) ........................... 130 . Parking, License Plate, Side marker and Tail Lamps LT
REMOVAL ........................................................ 130 . Do Not Turn OFF (After Approx. 10 Minutes) ...... 157 .
INSTALLATION ................................................ 130 . Bulb Replacement ............................................... 157 .
Removal and Installation (A/T) ............................ 130 . FRONT SIDE MARKER LAMP ........................ 157 . L
REMOVAL ........................................................ 130 . LICENSE PLATE LAMP ................................... 157 .
INSTALLATION ................................................ 130 . FRONT TURN SIGNAL (PARKING) LAMP ...... 157 .
COMBINATION SWITCH ....................................... 131 . TAIL LAMP ....................................................... 157 .
Wiring Diagram -- COMBSW -- ......................... 131 . Removal and Installation ..................................... 157 . M
Combination Switch Reading Function ............... 132 . FRONT SIDE MARKER LAMP ........................ 157 .
CONSULT-II Function (BCM) .............................. 132 . LICENSE PLATE LAMP ................................... 158 .
CONSULT-II BASIC OPERATION .................... 132 . FRONT TURN SIGNAL (PARKING) LAMP ...... 158 .
DATA MONITOR .............................................. 133 . TAIL LAMP ....................................................... 158 .
Combination Switch Inspection ........................... 134 . REAR COMBINATION LAMP ................................ 159 .
Removal and Installation ..................................... 136 . Bulb Replacement ............................................... 159 .
STOP LAMP .......................................................... 137 . REAR FENDER SIDE (REAR TURN SIGNAL
Wiring Diagram -- STOP/L -- ............................. 137 . LAMP BULB) .................................................... 159 .
Bulb Replacement of High-Mounted Stop Lamp . 138 TRUNK LID SIDE (BACK-UP LAMP) ............... 159 .
WITH REAR SPOILER .................................... 138 . Removal and Installation ..................................... 159 .
WITHOUT REAR SPOILER ............................. 138 . REMOVAL ........................................................ 159 .
Bulb Replacement of Rear Combination Lamp (Stop INSTALLATION ................................................ 160 .
Lamp) .................................................................. 138
. VANITY MIRROR LAMP ........................................ 161 .
Removal and Installation of High-Mounted Stop Bulb Replacement ............................................... 161 .
Lamp ................................................................... 138
. MAP LAMP ............................................................ 162.
REMOVAL (WITH REAR SPOILER) ................ 138 .

Edition; 2004 September LT-3 2005 G35 Sedan
Bulb Replacement ............................................... 162 . Schematic ............................................................ 174
.
Removal and Installation ..................................... 162 . Wiring Diagram -- ROOM/L -- ............................ 176 .
REMOVAL ........................................................ 162 . Terminals and Reference Values for BCM ........... 183 .
INSTALLATION ................................................. 162 . How to Proceed With Trouble Diagnosis ............. 184 .
TRUNK ROOM LAMP ............................................ 163 . Preliminary Check ................................................ 184 .
Bulb Replacement, Removal and Installation ...... 163 . CHECK POWER SUPPLY AND GROUND CIR-
REMOVAL ........................................................ 163 . CUIT .................................................................. 184
.
INSTALLATION ................................................. 163 . CONSULT-II Functions (BCM) ............................. 185 .
PERSONAL LAMP ................................................. 164 . CONSULT-II BASIC OPERATION .................... 185 .
Bulb Replacement ............................................... 164 . WORK SUPPORT ............................................ 186 .
Removal and Installation ..................................... 164 . DATA MONITOR ............................................... 186 .
REMOVAL ........................................................ 164 . ACTIVE TEST ................................................... 187 .
INSTALLATION ................................................. 164 . Map Lamp Control Does Not Operate ................. 188 .
IGNITION KEY HOLE ILLUMINATION .................. 165 . Ignition key Hole illumination Control Does Not
Removal and Installation ..................................... 165 . Operate ................................................................ 189
.
REMOVAL (WITHOUT INTELLIGENT KEY SYS- All Step Lamps Does Not Operate ....................... 191 .
TEM) ................................................................. 165
. All Interior Room Lamps Does Not Operate ........ 192 .
REMOVAL (WITH INTELLIGENT KEY SYSTEM) 165 . Bulb Replacement ................................................ 192 .
INSTALLATION ................................................. 165 . MAP LAMP ....................................................... 192 .
GLOVE BOX LAMP ............................................... 166 . STEP LMP ........................................................ 192 .
Bulb Replacement, Removal and Installation ...... 166 . Removal and Installation ...................................... 192 .
REMOVAL ........................................................ 166 . MAP LAMP ....................................................... 192 .
INSTALLATION ................................................. 166 . STEP LAMP ...................................................... 192 .
ASHTRAY ILLUMINATION .................................... 167 . ILLUMINATION ....................................................... 193 .
Bulb Replacement, Removal and Installation ...... 167 . System Description .............................................. 193 .
REMOVAL ........................................................ 167 . ILLUMINATION OPERATION BY LIGHTING
INSTALLATION ................................................. 167 . SWITCH ............................................................ 193
.
CIGARETTE LIGHTER ILLUMINATION ................ 168 . EXTERIOR LAMP BATTERY SAVER CONTROL .194
Bulb Replacement, Removal and Installation ...... 168 . CAN Communication System Description ........... 195 .
REMOVAL ........................................................ 168 . CAN Communication Unit .................................... 195 .
INSTALLATION ................................................. 168 . Schematic ............................................................ 196
.
INTERIOR ROOM LAMP ....................................... 169 . Wiring Diagram -- ILL -- ..................................... 197 .
Component Parts and Harness Connector Location 169 . Removal and Installation ...................................... 206 .
System Description .............................................. 170 . GLOVE BOX LAMP .......................................... 206 .
POWER SUPPLY AND GROUND .................... 170 . BULB SPECIFICATIONS ....................................... 207 .
SWITCH OPERATION ..................................... 171 . Headlamp ............................................................. 207
.
ROOM LAMP TIMER OPERATION .................. 172 . Exterior Lamp ....................................................... 207
.
INTERIOR LAMP BATTERY SAVER CONTROL 173 . Interior Lamp/Illumination ..................................... 207 .

Edition; 2004 September LT-4 2005 G35 Sedan
PRECAUTIONS

PRECAUTIONS PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS00AW4

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
General Precautions for Service Operations AKS00AW6

q Never work with wet hands.
H
q 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). I
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, J
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. LT
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 L
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 M
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 Sedan
PRECAUTIONS

Wiring Diagrams and Trouble Diagnosis AKS00AW7

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-3, "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 Sedan
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010
A
Component Parts and Harness Connector Location AKS009IE

PKIB6095E
LT
System Description AKS009IF

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 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,
q through 10A fuse [No. 19, located in fuse block (J/B)]

Edition; 2004 September LT-7 2005 G35 Sedan
HEADLAMP (FOR USA)

q to combination meter terminal 21.
With ignition switch in ON or START position, power is supplied
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 terminal 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)
q through IPDM E/R terminal 27
q to front combination lamp RH terminal 2,
q through 10A fuse (No. 74, located in IPDM E/R)
q through IPDM E/R terminal 28

Edition; 2004 September LT-8 2005 G35 Sedan
HEADLAMP (FOR USA)

q to front combination lamp LH terminal 2.
Ground is supplied A
q to front combination lamp RH terminals 4 and 8
q through grounds E17 and E43,
B
q to front combination lamp LH terminals 4 and 8
q through grounds E17 and E43.
With power and ground supplied, the high beam and low beam headlamps illuminate. C
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.
COMBINATION SWITCH READING FUNCTION D
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 E
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. F
AUTO LIGHT OPERATION (IF EQUIPPED)
Refer to LT-77, "System Description" in "AUTO LIGHT SYSTEM".
G
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to BL-199, "VEHICLE
SECURITY (THEFT WARNING) SYSTEM" . H
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 I
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. J
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.
q Counter-reflected luminance increases and the contrast enhances on the wet road in the rain. That makes LT
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.
L
CAN Communication System Description AKS009IG

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-
M
tronic control units are equipped onto 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 AKS009IH

Refer to LAN-21, "CAN Communication Unit" .

Edition; 2004 September LT-9 2005 G35 Sedan
HEADLAMP (FOR USA)

Schematic AKS009II

TKWM2241E

Edition; 2004 September LT-10 2005 G35 Sedan
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- AKS009IJ

TKWM2242E

Edition; 2004 September LT-11 2005 G35 Sedan
HEADLAMP (FOR USA)

TKWM2243E

Edition; 2004 September LT-12 2005 G35 Sedan
HEADLAMP (FOR USA)

TKWM2244E

Edition; 2004 September LT-13 2005 G35 Sedan
HEADLAMP (FOR USA)

TKWM2245E

Edition; 2004 September LT-14 2005 G35 Sedan
HEADLAMP (FOR USA)

Terminals and Reference Values for BCM AKS009IK

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

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

D
PKIB3468E

3 G Combination switch input 4
4 G/R 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 AKS009IL

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 Sedan
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 Ground ON -- Approx. 0V
48 L CAN - H -- -- --
49 P CAN - L -- -- --
60 B/W Ground ON -- Approx. 0V

How to Proceed With Trouble Diagnosis AKS009IM

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 AKS009IN

CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
q Check for blown fuses.
Unit Power source Fuse and fusible link No.
F
Battery
18
BCM
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
72
74
IPDM E/R Battery
76
86
Refer to LT-11, "Wiring Diagram -- H/LAMP --" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG

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