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LIGHTING SYSTEM

K ELECTRICAL

SECTION
LIGHTING SYSTEM
LT B

E
CONTENTS
PRECAUTIONS ......................................................... 4 . Sides) .................................................................... 22
. F
Precautions for Supplemental Restraint System Headlamp Low Beam Does Not Illuminate (One
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- Side) ...................................................................... 24
.
SIONER" ................................................................. 4
. Headlamps Does Not Turn OFF ............................ 26 . G
Precautions for Battery Service ............................... 4 . General Information for Xenon Headlamp Trouble
General Precautions for Service Operations ........... 4 . Diagnosis ............................................................... 26
.
HEADLAMP (FOR USA) ........................................... 5 . Caution: ................................................................. 26
.
H
Component Parts and Harness Connector Location 5 ..... Xenon Headlamp Trouble Diagnosis ..................... 27 .
System Description ................................................. 5 . Aiming Adjustment ................................................. 27 .
OUTLINE .............................................................. 5
. PREPARATION BEFORE ADJUSTING ............. 27 .
HEADLAMP OPERATION ................................... 6 . LOW BEAM AND HIGH BEAM .......................... 28 . I
COMBINATION SWITCH READING FUNCTION 7 ..... ADJUSTMENT USING AN ADJUSTMENT
EXTERIOR LAMP BATTERY SAVER CONTROL 7 ..... SCREEN (LIGHT/DARK BORDERLINE) ........... 28 .
REMOTE KEYLESS ENTRY SYSTEM OPERA- Bulb Replacement ................................................. 28 . J
TION ..................................................................... 7
. HEADLAMP HIGH/LOW BEAM ......................... 28 .
VEHICLE SECURITY SYSTEM ........................... 7 . PARKING LAMP ................................................. 29 .
XENON HEADLAMP ............................................ 7 . FRONT TURN SIGNAL LAMP ........................... 29 .
LT
CAN Communication System Description ............... 7 . FRONT SIDE MARKER LAMP .......................... 29 .
CAN Communication Unit ....................................... 7 . Removal and Installation ....................................... 29 .
Schematic ............................................................... 8
. REMOVAL .......................................................... 29 .
Wiring Diagram -- H/LAMP -- ................................ 9 . INSTALLATION .................................................. 29 . L
Terminals and Reference Values for BCM ............ 13 . Disassembly and Assembly ................................... 30 .
Terminals and Reference Values for IPDM E/R .... 15 . DISASSEMBLY .................................................. 30 .
How to Proceed With Trouble Diagnosis ............... 15 . ASSEMBLY ........................................................ 31 . M
Preliminary Check ................................................. 15 . Servicing to Replace Headlamps When Damaged 31 ...
CHECK POWER SUPPLY AND GROUND CIR- INSTALLATION OF HEADLAMP BRACKET ...... 31 .
CUIT ................................................................... 15
. HEADLAMP (FOR CANADA) - DAYTIME LIGHT
CONSULT-III Function (BCM) ............................... 17 . SYSTEM - ................................................................. 32
.
WORK SUPPORT .............................................. 17 . Component Parts and Harness Connector Location 32 ...
DATA MONITOR ................................................ 17 . System Description ................................................ 32 .
ACTIVE TEST .................................................... 18 . OUTLINE ............................................................ 32.
CONSULT-III Function (IPDM E/R) ....................... 18 . HEADLAMP OPERATION .................................. 33 .
DATA MONITOR ................................................ 18 . DAYTIME LIGHT OPERATION .......................... 34 .
ACTIVE TEST .................................................... 18 . OPERATION ....................................................... 35 .
Headlamp Does Not Change To High Beam (Both COMBINATION SWITCH READING FUNCTION 35 ...
Sides) .................................................................... 19
. EXTERIOR LAMP BATTERY SAVER CONTROL 35 ...
Headlamp Does Not Change To High Beam (One INTERLOCKED OPERATION WITH REMOTE
Side) ...................................................................... 21
. KEYLESS ENTRY SYSTEM .............................. 35 .
High Beam Indicator Lamp Does Not Illuminate ... 22 INTERLOCKED OPERATION WITH VEHICLE
Headlamp Low Beam Does Not Illuminate (Both SECURITY SYSTEM ......................................... 35 .

Revision: 2006 November LT-1 2007 350Z
XENON HEADLAMP .......................................... 35 . CAN Communication System Description .............67 .
CAN Communication System Description ............. 36 . CAN Communication Unit ......................................67 .
CAN Communication Unit ...................................... 36 . Schematic ..............................................................68
.
Schematic .............................................................. 37
. Wiring Diagram -- TURN -- ..................................69 .
Wiring Diagram -- DTRL -- .................................. 38 . COUPE MODELS ...............................................69 .
Terminals and Reference Values for BCM ............. 45 . ROADSTER MODELS ........................................73 .
Terminals and Reference Values for IPDM E/R ..... 47 . Terminals and Reference Values for BCM .............77 .
How to Proceed With Trouble Diagnosis ............... 47 . How to Proceed With Trouble Diagnosis ...............78 .
Preliminary Check ................................................. 47 . Preliminary Check ..................................................79 .
CHECK POWER SUPPLY AND GROUND CIR- CHECK POWER SUPPLY AND GROUND CIR-
CUIT ................................................................... 47
. CUIT ....................................................................79
.
CONSULT-III Function (BCM) ................................ 49 . CONSULT-III Function (BCM) ................................80 .
WORK SUPPORT .............................................. 49 . DATA MONITOR .................................................80 .
DATA MONITOR ................................................. 49 . ACTIVE TEST .....................................................80 .
ACTIVE TEST .................................................... 50 . Turn Signal Lamp Does Not Operate .....................81 .
CONSULT-III Function (IPDM E/R) ........................ 50 . Hazard Warning Lamp Does Not Operate But Turn
DATA MONITOR ................................................. 50 . Signal Lamp Operate .............................................82 .
ACTIVE TEST .................................................... 50 . Turn Signal Indicator Lamp Does Not Operate ......83 .
Daytime Light Control Does Not Operate .............. 51 . Bulb Replacement (Front Turn Signal Lamp) .........83 .
Headlamp Does Not Change To High Beam (Both Bulb Replacement (Rear Turn Signal Lamp) .........83 .
Sides) .................................................................... 51
. Removal and Installation of Front Turn Signal Lamp ...83
Headlamp Does Not Change To High Beam (One Removal and Installation of Rear Turn Signal Lamp...83
Side) ...................................................................... 54
. LIGHTING AND TURN SIGNAL SWITCH ...............84 .
High Beam Indicator Lamp Does Not Illuminate .... 55 . Removal and Installation ........................................84 .
Headlamp Low Beam Does Not Illuminate (Both REMOVAL ...........................................................84 .
Sides) .................................................................... 55
. INSTALLATION ...................................................84 .
Headlamp Low Beam Does Not Illuminate (One HAZARD SWITCH ....................................................85 .
Side) ...................................................................... 57
. Removal and Installation ........................................85 .
Headlamps Does Not Turn OFF ............................ 59 . HAZARD SWITCH (A/T MODELS) .....................85 .
General Information for Xenon Headlamp Trouble HAZARD SWITCH (M/T MODELS) ....................85 .
Diagnosis ............................................................... 59
. COMBINATION SWITCH .........................................86 .
Caution: ................................................................. 59
. Wiring Diagram --COMBSW-- .............................86 .
Xenon Headlamp Trouble Diagnosis ..................... 60 . Combination Switch Reading Function ..................87 .
Aiming Adjustment ................................................. 60 . Terminals and Reference Values for BCM .............87 .
PREPARATION BEFORE ADJUSTING ............. 60 . CONSULT-III Function (BCM) ................................91 .
LOW BEAM AND HIGH BEAM .......................... 61 . DATA MONITOR .................................................91 .
ADJUSTMENT USING AN ADJUSTMENT Combination Switch Inspection ..............................92 .
SCREEN (LIGHT/DARK BORDERLINE) ........... 61 . Removal and Installation ........................................94 .
Bulb Replacement ................................................. 61 . STOP LAMP .............................................................95 .
HEADLAMP HIGH/LOW BEAM ......................... 61 . Wiring Diagram -- STOP/L -- ...............................95 .
PARKING LAMP ................................................. 62 . High-Mounted Stop Lamp (Coupe Models) ............97 .
FRONT TURN SIGNAL LAMP ........................... 62 . BULB REPLACEMENT, REMOVAL AND
FRONT SIDE MARKER LAMP ........................... 62 . INSTALLATION ...................................................97 .
Removal and Installation ....................................... 62 . High-Mounted Stop Lamp (Roadster Models) ........97 .
REMOVAL .......................................................... 62 . BULB REPLACEMENT, REMOVAL AND
INSTALLATION ................................................... 62 . INSTALLATION ...................................................97 .
Disassembly and Assembly ................................... 63 . Stop Lamp ..............................................................97
.
DISASSEMBLY .................................................. 63 . BULB REPLACEMENT .......................................97 .
ASSEMBLY ........................................................ 64 . REMOVAL AND INSTALLATION ........................97 .
Serving to Replace Headlamps When Damaged ... 64 BACK-UP LAMP ......................................................98 .
INSTALLATION OF HEADLAMP BRACKET ...... 64 . Wiring Diagram -- BACK/L -- ...............................98 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 65 COUPE MODELS (A/T) ......................................98 .
Component Parts and Harness Connector Location 65 ... COUPE MODELS (M/T) .....................................99 .
System Description ................................................ 65 . ROADSTER MODELS (A/T) ............................. 100 .
TURN SIGNAL OPERATION .............................. 65 . ROADSTER MODELS (M/T) ............................ 101 .
HAZARD WARNING LAMP OPERATION .......... 66 . Bulb Replacement ................................................ 102 .
REMOTE KEYLESS ENTRY SYSTEM OPERA- Removal and Installation ...................................... 102 .
TION ................................................................... 67
. PARKING, LICENSE PLATE AND TAIL LAMPS ... 103 .
COMBINATION SWITCH READING FUNCTION 67 ... Component Parts and Harness Connector Location .103

Revision: 2006 November LT-2 2007 350Z
System Description ............................................. 103 . Wiring Diagram -- ROOM/L -- ........................... 133 .
OUTLINE .......................................................... 103
. COUPE MODELS ............................................ 133 . A
OPERATION BY LIGHTING SWITCH ............. 104 . ROADSTER MODELS ..................................... 137 .
COMBINATION SWITCH READING FUNCTION 104 . Terminals and Reference Values for BCM ........... 141 .
EXTERIOR LAMP BATTERY SAVER CONTROL 104 . How to Proceed with Trouble Diagnosis .............. 141 . B
CAN Communication System Description ........... 105 . Preliminary Check ............................................... 142 .
CAN Communication Unit ................................... 105 . CHECK POWER SUPPLY AND GROUND CIR-
Schematic ........................................................... 106
. CUIT ................................................................. 142
.
Wiring Diagram -- TAIL/L -- ............................... 107 . CONSULT-III Function (BCM) ............................. 143 . C
Terminals and Reference Values for BCM ...........112 . WORK SUPPORT ............................................ 143 .
Terminals and Reference Values for IPDM E/R ...114 . DATA MONITOR .............................................. 143 .
How to Proceed With Trouble Diagnosis ..............114 . ACTIVE TEST .................................................. 144 . D
Preliminary Check ................................................114 . Map Lamp Control Does Not Operate (Coupe mod-
CHECK POWER SUPPLY AND GROUND CIR- els) ....................................................................... 144
.
CUIT ..................................................................114
. Map Lamp Control Does Not Operate (Roadster E
CONSULT-III Function (BCM) ..............................115 . models) ................................................................ 146
.
CONSULT-III Function (IPDM E/R) ......................115 . Ignition Key Hole Illumination Does Not Illuminate 148 .
Parking, License Plate, Side Marker and Tail Lamps Luggage Room Lamp Does Not Illuminate (Coupe
Do Not Illuminate (for USA) ..................................116 . Models) ................................................................ 149
. F
Parking, License Plate, Side Marker, and Tail Lamps Trunk Room Lamp Does Not Illuminate (Roadster
Do Not Illuminate (for Canada) ............................119 . Models) ................................................................ 151
.
Parking, Side Marker, License Plate and Tail Lamps Bulb Replacement ............................................... 153 . G
Do Not Turn OFF (After Approx. 10 Minutes) ...... 124 . MAP LAMP ....................................................... 153 .
License Plate Lamp ............................................. 125 . VANITY MIRROR LAMP .................................. 154 .
BULB REPLACEMENT, REMOVAL AND LUGGAGE ROOM LAMP & TRUNK ROOM H
INSTALLATION ................................................ 125 . LAMP ................................................................ 154.
Front Parking Lamp ............................................. 125 . IGNITION KEY HOLE ILLUMINATION ............. 154 .
BULB REPLACEMENT .................................... 125 . Removal and Installation ..................................... 155 .
I
REMOVAL AND INSTALLATION ..................... 125 . MAP LAMP ....................................................... 155 .
Tail Lamp ............................................................. 125
. LUGGAGE ROOM LAMP ................................. 155 .
BULB REPLACEMENT .................................... 125 . ILLUMINATION ...................................................... 156 .
REMOVAL AND INSTALLATION ..................... 125 . System Description .............................................. 156 . J
REAR COMBINATION LAMP ............................... 126 . OUT LINE ......................................................... 156 .
Bulb Replacement ............................................... 126 . ILLUMINATION OPERATION BY LIGHTING
REAR FENDER SIDE (STOP & TAIL LAMP, SWITCH ........................................................... 157 . LT
REAR SIDE MARKER LAMP) ......................... 126 . EXTERIOR LAMP BATTERY SAVER CONTROL 158 .
REAR BUMPER SIDE (BACK-UP LAMP BULB, CAN Communication System Description ........... 158 .
REAR TURN SIGNAL LAMP BULB) ................ 126 . CAN Communication Unit .................................... 158 . L
Removal and Installation ..................................... 127 . Schematic ............................................................ 159 .
REMOVAL ........................................................ 127 . Wiring Diagram -- ILL -- ..................................... 161 .
INSTALLATION ................................................ 127 . Bulb Replacement ............................................... 171 .
INTERIOR ROOM LAMP ....................................... 128 . LUGGAGE FLOOR BOX LAMP ....................... 171 . M
Component Parts and Harness Connector Location 128 . CUP HOLDER ILLUMINATION ........................ 171 .
System Description ............................................. 128 . Removal and Installation ..................................... 171 .
POWER SUPPLY AND GROUND ................... 129 . LUGGAGE FLOOR BOX LAMP ....................... 171 .
SWITCH OPERATION ..................................... 130 . BULB SPECIFICATIONS ....................................... 172 .
MAP LAMP TIMER OPERATION .................... 130 . Headlamp ............................................................ 172 .
INTERIOR LAMP BATTERY SAVER CONTROL 131 . Exterior Lamp ...................................................... 172 .
Schematic ........................................................... 132
. Interior Lamp/Illumination .................................... 172 .

Revision: 2006 November LT-3 2007 350Z
PRECAUTIONS

PRECAUTIONS PFP:00011

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NKS00541

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along
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
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:
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.
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.
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.
Precautions for Battery Service NKS00542

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
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
General Precautions for Service Operations NKS00543

q Never work with wet hands.
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).
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,
never touch the harness, bulb, and socket of the headlamp.
q When checking the headlamp on/off operation, check it on vehi- PKIB7344E
cle and with the power connected to the vehicle-side connector.
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.

Revision: 2006 November LT-4 2007 350Z
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010
A
Component Parts and Harness Connector Location NKS004WM

SKIB7542E
LT
System Description NKS004WN

Control of the headlamp system operation is dependent upon the position of the combination switch (lighting
switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives input L
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) of the IPDM E/R controls the headlamp high and headlamp low relay coils. These relays,
M
when energized, 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 directly,
q through 40A 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 15A fuse [No.78 located in IPDM E/R]
q to CPU located in IPDM E/R,
q through 10A fuse [No.71,located in IPDM E/R]
q to CPU located in IPDM E/R,
q through 10A fuse [No.19, located in fuse block (J/B)]

Revision: 2006 November LT-5 2007 350Z
HEADLAMP (FOR USA)

q to combination meter terminal 24.
With ignition switch in ON or START position, power is supplied
q to CPU 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 terminal 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, E43 and B102 (with VDC system, navigation system or telephone)
q through grounds E17, E43 and F152 (without VDC system, navigation system and telephone),
q to combination meter terminals 10, 11 and 12
q through grounds M30 and M66.
HEADLAMP OPERATION
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal from combination switch reading func-
tion (Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" ) the headlamp to illuminate. This
input signal is communicated to the IPDM E/R through the CAN communication lines. The CPU located in the
IPDM E/R controls the headlamp low relay coil, which when energized, supplies 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 7,
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 7.
Ground is supplied
q to front combination lamp RH terminal 4, and
q to front combination lamp LH terminal 4
q through grounds E17, E43 and B102 (with VDC system, navigation system or telephone)
q through grounds E17, E43 and F152 (without VDC system, navigation system and telephone).
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 headlamp high beams to illuminate. High beam request signal and low beam request signal is com-
municated to the IPDM E/R through CAN communication. The CPU located in the IPDM E/R controls head-
lamp high relay and headlamp low relay turned ON, which when energized, supplies 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 7,
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 7,
q through 10A fuse [No. 72, located in IPDM E/R]
q through IPDM E/R terminal 27

Revision: 2006 November LT-6 2007 350Z
HEADLAMP (FOR USA)

q to front combination lamp RH terminal 3,
q through 10A fuse [No. 74, located in IPDM E/R] A
q through IPDM E/R terminal 28
q to front combination lamp LH terminal 3.
B
Ground is supplied
q to front combination lamp RH terminals 4, and
q to front combination lamp LH terminals 4, C
q through grounds E17, E43 and B102 (with VDC system, navigation system or telephone)
q through grounds E17, E43 and F152 (without VDC system, navigation system and telephone).
With the power and ground supplied, headlamp bulbs illuminate. High beam solenoids move the bulb shades D
in the front combination lamps, and the bulb shades change to high beam position.
Unified meter and A/C amp. receives signal from BCM through CAN communication lines, and then combina-
tion meter indicator illuminates high beam.
E
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL F
When the combination switch (lighting switch) is in the 2ND position (ON), and the ignition switch is turned
from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off. G
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-III.
REMOTE KEYLESS ENTRY SYSTEM OPERATION
H
Refer to BL-59, "REMOTE KEYLESS ENTRY SYSTEM" .
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to BL-125, "VEHICLE I
SECURITY (THEFT WARNING) SYSTEM" .
XENON HEADLAMP
Xenon type lamps are used for headlamps. Xenon bulbs do not use a filament. Instead, they produce light J
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 NKS004WO

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 NKS004WP

Refer to LAN-48, "CAN System Specification Chart" .

Revision: 2006 November LT-7 2007 350Z
HEADLAMP (FOR USA)

Schematic NKS004WQ

TKWT4058E

Revision: 2006 November LT-8 2007 350Z
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- NKS004WR

TKWT5744E

Revision: 2006 November LT-9 2007 350Z
HEADLAMP (FOR USA)

TKWT5745E

Revision: 2006 November LT-10 2007 350Z
HEADLAMP (FOR USA)

TKWT5746E

Revision: 2006 November LT-11 2007 350Z
HEADLAMP (FOR USA)

TKWT2258E

Revision: 2006 November LT-12 2007 350Z
HEADLAMP (FOR USA)

Terminals and Reference Values for BCM NKS004WS

A
CAUTION:
q Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.
q Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position. B
Wiper dial position can be confirmed on CONSULT-III. Refer to LT-91, "DATA MONITOR" .

Ter- Measuring condition C
Wire
minal Signal name Ignition Reference value
color Operation or condition
No. switch
OFF Approx. 0 V D

Any of the conditions below E
q Lighting switch 1ST
q Lighting switch HIGH beam
(Operates only HIGH beam
F
Lighting, turn, switch)
wiper switch PKIB4959J
Combination
2 GY ON (Wiper inter- Approx. 1.0 V
switch input 5
mittent dial G
position 4)

H
Lighting switch 2ND

PKIB4953J
I
Approx. 2.0 V
OFF Approx. 0 V
J

Lighting, turn,
wiper switch Any of the conditions below
Combination LT
3 L/W ON (Wiper inter- q Lighting switch 2ND
switch input 4
mittent dial
q Lighting switch PASSING
position 4)
(Operates only PASSING switch)
L
PKIB4959J

Approx. 1.0 V
Ignition switch
11 LG ACC -- Battery voltage M
(ACC)

Revision: 2006 November LT-13 2007 350Z
HEADLAMP (FOR USA)

Ter- Measuring condition
Wire
minal Signal name Ignition Reference value
color Operation or condition
No. switch

OFF

Lighting, turn, PKIB4960J
wiper switch Approx. 7.2 V
Combination
33 G ON (Wiper inter-
switch output 4
mittent dial
position 4)

Lighting switch 1ST (The same
result with lighting switch 2ND)

PKIB4958J

Approx. 1.2 V

OFF

Lighting, turn, PKIB4960J
wiper switch Approx. 7.2 V
Combination
34 W/L ON (Wiper inter-
switch output 3
mittent dial
position 4)
Any of the conditions below
q Lighting switch 2ND
q Lighting switch HI beam
(Operates only HI beam switch)
PKIB4958J

Approx. 1.2 V

OFF

Lighting, turn, PKIB4960J
wiper switch Approx. 7.2 V
Combination
35 W/G ON (Wiper inter-
switch output 2
mittent dial
position 4)
Any of the conditions below
q Lighting switch 2ND
q Lighting switch PASSING
(Operates only PASSING switch)
PKIB4958J

Approx. 1.2 V
Ignition switch
38 W/L ON -- Battery voltage
(ON)

Revision: 2006 November LT-14 2007 350Z
HEADLAMP (FOR USA)

Ter- Measuring condition
Wire A
minal Signal name Ignition Reference value
color Operation or condition
No. switch
39 L CAN - H -- -- --
B
40 P CAN - L -- -- --
Battery power
42 GY OFF -- Battery voltage
supply
C
52 B Ground ON -- Approx. 0 V
Battery power
55 R OFF -- Battery voltage
supply
D
Terminals and Reference Values for IPDM E/R NKS004WT

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

Lighting switch 2ND OFF Approx. 0 V F
20 R/L Headlamp low (RH) ON
position ON Battery voltage

Lighting switch HIGH or OFF Approx. 0 V
27 BR Headlamp high (RH) ON G
PASS position ON Battery voltage

Lighting switch HIGH or OFF Approx. 0 V
28 R/Y Headlamp high (LH) ON
PASS position ON Battery voltage
H
Lighting switch 2ND OFF Approx. 0 V
30 R/W Headlamp low (LH) ON
position ON Battery voltage
38 B Ground ON -- Approx. 0 V I
48 L CAN - H -- -- --
49 P CAN - L -- -- --
J
60 B Ground ON -- Approx. 0 V

How to Proceed With Trouble Diagnosis NKS004WU

LT
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-5, "System Description" .
3. Perform the preliminary check. Refer to LT-15, "Preliminary Check" . L
4. Check symptom and repair or replace the cause of malfunction.
5. Does headlamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END M
Preliminary Check NKS004WV

CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses and fusible link.
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

Revision: 2006 November LT-15 2007 350Z
HEADLAMP (FOR USA)

Unit Power source Fuse and fusible link No.
72
74
IPDM E/R Battery
76
86

Refer to LT-9, "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-
4, "POWER SUPPLY ROUTING CIRCUIT" .

2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
Terminals Ignition switch position
(+)
BCM (-) OFF ACC ON
Terminal
connector
Battery Battery
11 Approx. 0 V
voltage voltage
M90
Battery
38 Approx. 0 V Approx. 0 V
voltage
Ground
Battery Battery Battery
42
voltage voltage voltage
M91
Battery Battery Battery
55
voltage voltage voltage

OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.

PKIB5197E

3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
BCM connector Terminal Continuity
Ground
M91 52 Yes

OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.

PKIB5198E

Revision: 2006 November LT-16 2007 350Z
HEADLAMP (FOR USA)

CONSULT-III Function (BCM) NKS004WW

A
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
BCM diagnosis part Diagnosis mode Description
WORK SUPPORT

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