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LIGHTING SYSTEM

K ELECTRICAL

B
SECTION
LIGHTING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 4
. Tail Lamp Relay System Check ............................. 30 . F
Precautions for Supplemental Restraint System Aiming Adjustment ................................................. 31.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LOW BEAM AND HIGH BEAM .......................... 31 .
SIONER" ................................................................. 4
. Bulb Replacement ................................................. 32 . G
General Precautions for Service Operations ........... 4 . HEADLAMP (OUTER SIDE), FOR LOW BEAM 32 ...
Wiring Diagrams and Trouble Diagnosis ................. 4 . HEADLAMP (INNER SIDE), FOR HIGH BEAM... 33
HEADLAMP (FOR USA) ........................................... 6 . PARKING LAMP (CLEARANCE LAMP) ............. 33 .
H
Component Parts and Harness Connector Location 6 ..... FRONT TURN SIGNAL LAMP ........................... 33 .
System Description ................................................. 6
. FRONT SIDE MARKER LAMP .......................... 33 .
OUTLINE .............................................................. 6
. Removal and Installation ....................................... 34 .
BATTERY SAVER CONTROL ............................. 8 . REMOVAL .......................................................... 34
. I
AUTO LIGHT OPERATION .................................. 8 . INSTALLATION .................................................. 34 .
VEHICLE SECURITY SYSTEM ........................... 8 . Disassembly and Assembly ................................... 35 .
XENON HEADLAMP ............................................ 8 . DISASSEMBLY .................................................. 35 . J
Schematic ............................................................. 10
. ASSEMBLY ........................................................ 36.
Wiring Diagram -- H/LAMP -- ...............................11 . HEADLAMP (FOR CANADA) - DAYTIME LIGHT
Terminals and Reference Value for Battery Saver SYSTEM - ................................................................. 37
.
LT
Control Unit ........................................................... 17
. Component Parts and Harness Connector Location 37 ...
Terminals and Reference Value for BCM .............. 18 . System Description ................................................ 37.
Work Flow ............................................................. 20
. HEADLAMP OPERATION .................................. 38 .
Preliminary Check ................................................. 20
. BATTERY SAVER CONTROL ............................ 39 . L
SETTING CHANGE FUNCTION FOR AUTO AUTO LIGHT OPERATION ................................ 39 .
LIGHT SYSTEM ................................................. 20 . DAYTIME LIGHT OPERATION .......................... 39 .
INSPECTION FOR POWER SUPPLY AND OPERATION ....................................................... 39. M
GROUND CIRCUIT ............................................ 20 . Schematic .............................................................. 41
.
CONSULT-II Function for Auto Light System ........ 22 . Wiring Diagram -- DTRL -- .................................. 42 .
CONSULT-II BASIC OPERATION PROCEDURE Terminals and Reference Value for Daytime Light
... 22 Control Unit ............................................................ 51
.
WORK SUPPORT .............................................. 23 . Symptom Chart ...................................................... 52
.
DATA MONITOR ................................................ 23 . Aiming Adjustment ................................................. 54.
ACTIVE TEST .................................................... 23. Bulb Replacement ................................................. 54 .
On Board Diagnosis .............................................. 24 . Removal and Installation ....................................... 54 .
DIAGNOSIS ITEM .............................................. 24 . Disassembly and Assembly ................................... 54 .
SWITCH MONITOR ........................................... 24 . HEADLAMP AIMING CONTROL ............................ 55 .
Symptom Chart ..................................................... 25
. Wiring Diagram -- H/AIM -- .................................. 55 .
HEADLAMP SYSTEM ........................................ 25 . Removal and Installation ....................................... 57 .
AUTO LIGHT SYSTEM ...................................... 26 . Switch Circuit Inspection ....................................... 57 .
Lighting Switch (AUTO) System Check ................. 27 . TURN SIGNAL AND HAZARD WARNING LAMPS... 58
Optical Sensor System Check .............................. 28 . System Description ................................................ 58.
Headlamp Relay System Check ........................... 29 . TURN SIGNAL OPERATION ............................. 58 .

Revision; 2004 April LT-1 2003 Q45
HAZARD LAMP OPERATION ............................ 58 . Terminals and Reference Value for BCM ...............92 .
MULTI-REMOTE CONTROL SYSTEM OPERA- Terminals and Reference Value for Driver Door Con-
TION ................................................................... 59
. trol Unit (LCU01) ....................................................93
.
LOW TIRE PRESSURE WARNING CONTROL Work Flow ..............................................................93
.
SYSTEM ............................................................. 59
. Preliminary Check ..................................................93.
Schematic .............................................................. 60
. SETTING CHANGE FUNCTION ........................93 .
Wiring Diagram -- TURN -- .................................. 61 . INSPECTION FOR POWER AND GROUND
Symptom Chart ...................................................... 65. CIRCUIT .............................................................94
.
Electrical Components Inspection ......................... 66 . CONSULT-II Function ............................................96 .
COMBINATION FLASHER UNIT CHECK .......... 66 . CONSULT-II BASIC OPERATION PROCEDURE
Bulb Replacement ................................................. 66 . ...96
FRONT TURN SIGNAL LAMP ........................... 66 . WORK SUPPORT ..............................................97 .
REAR TURN SIGNAL LAMP .............................. 66 . DATA MONITOR .................................................97 .
Removal and Installation ....................................... 66 . ACTIVE TEST .....................................................97 .
FRONT TURN SIGNAL LAMP ........................... 66 . On Board Diagnosis ...............................................98 .
SIDE TURN SIGNAL LAMP ............................... 66 . DIAGNOSIS ITEM ..............................................98 .
REAR TURN SIGNAL LAMP .............................. 66 . SWITCH MONITOR ............................................98 .
LIGHTING AND TURN SIGNAL SWITCH ............... 67 . Symptom Chart ......................................................99.
Removal and Installation ....................................... 67 . Interior Lamp ILL Switch System Check .............. 100 .
Switch Circuit Inspection ....................................... 67 . Personal Lamp Switch System Check ................. 102 .
HAZARD SWITCH ................................................... 68 . Door Switch System Check ................................. 103 .
Removal and Installation ....................................... 68 . Key Switch and Key Lock Solenoid System Check.105
STOP LAMP ............................................................. 69
. Bulb Replacement ................................................ 107 .
Wiring Diagram -- STOP/L -- ............................... 69 . MAP LAMP (FRONT PERSONAL LIGHT) AND
Bulb Replacement ................................................. 70 . CONSOLE LAMP (CONSOLE LIGHT) ............. 107 .
STOP LAMP ....................................................... 70 . PERSONAL LAMP (REAR PERSONAL LIGHT).107
HIGH-MOUNTED STOP LAMP .......................... 70 . Removal and Installation ...................................... 107 .
Removal and Installation ....................................... 70 . FRONT INTERIOR LAMP ................................. 107 .
STOP LAMP ....................................................... 70 . REAR INTERIOR LAMP ................................... 107 .
HIGH-MOUNTED STOP LAMP .......................... 70 . IGNITION KEY HOLE ILLUMINATION ............. 108 .
BACK-UP LAMP ...................................................... 71 . STEP LAMP ........................................................... 109
.
Wiring Diagram -- BACK/L -- ............................... 71 . Component Parts and Harness Connector Location .109
Bulb Replacement ................................................. 71 . System Description .............................................. 110 .
Removal and Installation ....................................... 71 . POWER SUPPLY AND GROUND .................... 110 .
PARKING, LICENSE PLATE AND TAIL LAMPS ..... 72 . OPERATING PROCEDURE ............................. 110 .
System Description ................................................ 72 . Schematic ............................................................ 111
.
LIGHTING OPERATION BY LIGHTING SWITCH 72 ... Wiring Diagram -- STEP/L -- .............................. 112 .
BATTERY SAVER CONTROL ............................ 72 . Terminals and Reference Value for BCM ............. 118 .
Schematic .............................................................. 73
. Terminals and Reference Value for Driver Door Con-
Wiring Diagram -- TAIL/L -- ................................. 74 . trol Unit (LCU01) .................................................. 118
.
Trouble Diagnoses ................................................. 78 . Terminals and Reference Value for Passenger Door
Bulb Replacement ................................................. 79 . Control Unit .......................................................... 119
.
LICENSE PLATE LAMP ..................................... 79 . Terminals and Reference Value for Rear LH, RH
FRONT COMBINATION LAMP .......................... 79 . Door Control Unit ................................................. 119
.
REAR COMBINATION LAMP ............................. 79 . Work Flow ............................................................ 119
.
Removal and Installation ....................................... 79 . Preliminary Check ................................................ 120.
LICENSE PLATE LAMP ..................................... 79 . INSPECTION FOR POWER SUPPLY AND
FRONT COMBINATION LAMP .......................... 79 . GROUND CIRCUIT .......................................... 120 .
REAR COMBINATION LAMP ............................. 80 . CONSULT-II Function .......................................... 122 .
INTERIOR ROOM LAMP ......................................... 81 . CONSULT-II BASIC OPERATION PROCEDURE
System Description ................................................ 81 . .122
OUTLINE ............................................................ 81
. DATA MONITOR ............................................... 123 .
TIMER FUNCTION ............................................. 81 . ACTIVE TEST ................................................... 123 .
LAMP OUTPUT CONTROL FUNCTION ............ 82 . On Board Diagnosis ............................................. 124 .
AUTO OFF FUNCTION ...................................... 82 . DIAGNOSIS ITEM ............................................ 124 .
LIGHTS ON/OFF MODES .................................. 82 . SWITCH MONITOR .......................................... 124 .
Major Components and Their Functions ................ 84 . Symptom Chart .................................................... 125.
Schematic .............................................................. 85
. DIAGNOSTIC PROCEDURE ............................ 125 .
Wiring Diagram -- INT/L -- ................................... 86 .

Revision; 2004 April LT-2 2003 Q45
Bulb Replacement ............................................... 127. TION ................................................................. 145
.
Removal and Installation ..................................... 127 . CONSOLE BOX LAMP .................................... 145 . A
DOOR MIRROR LAMP .......................................... 128 . GLOVE BOX LAMP .......................................... 145 .
System Description ............................................. 128. Removal and Installation ..................................... 146 .
Wiring Diagram -- MIRR/L -- ............................. 129 . FRONT CIGARETTE LIGHTER ILLUMINATION 146 . B
Bulb Replacement ............................................... 130. REAR ASHTRAY ILLUMINATION .................... 146 .
DOOR MIRROR LAMP .................................... 130 . VANITY MIRROR AND TRUNK ROOM LAMPS ... 147 .
ILLUMINATION ...................................................... 131
. Wiring Diagram -- INT/L -- ................................. 147 .
System Description ............................................. 131. Bulb Replacement ............................................... 148 . C
LIGHTING OPERATION BY LIGHTING SWITCH 131 . VANITY MIRROR LAMP .................................. 148 .
BATTERY SAVER CONTROL ......................... 131 . TRUNK ROOM LAMP ...................................... 148 .
Schematic ........................................................... 132
. BULB SPECIFICATIONS ....................................... 149 . D
Wiring Diagram -- ILL -- .................................... 134 . Headlamp ............................................................ 149
.
Removal and Installation ..................................... 145 . Exterior Lamp ...................................................... 149
.
ILLUMINATION CONTROL SWITCH .............. 145 . Interior Lamp/Illumination .................................... 149 . E
POWER WINDOW MAIN SWITCH ILLUMINA-

Revision; 2004 April LT-3 2003 Q45
PRECAUTIONS

PRECAUTIONS PFP:00011

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00F55

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.
General Precautions for Service Operations EKS000XN

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- PKIA0183E
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 long
period of time can deteriorate 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 turn the screw in loosening direction, first
fully loosen the screw, and then turn it in tightening direction.)
q Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
Wiring Diagrams and Trouble Diagnosis EKS0014T

When you read wiring diagrams, refer to the followings:
q Refer to GI-14, "How to Read Wiring Diagrams" in GI section
q Refer to PG-2, "POWER SUPPLY ROUTING" for power distribution circuit in PG section

Revision; 2004 April LT-4 2003 Q45
PRECAUTIONS

When you perform trouble diagnosis, refer to the followings:
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section A
q Refer toGI-26, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section

Revision; 2004 April LT-5 2003 Q45
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010

Component Parts and Harness Connector Location EKS000UL

SKIA3834E

System Description EKS000SX

The headlamp operation is controlled by the lighting switch which is built into the spiral cable and headlamp
battery saver control unit. And the headlamp battery saver system is controlled by the headlamp battery saver
control unit and BCM.
OUTLINE
Power is supplied at all times
q to headlamp relay-1 terminal 2, and
q to headlamp relay-1 terminal 3
q through 20A fuse [No. 57, located in the fuse, fusible link and relay block (J/B)], and
q to headlamp relay-1 terminal 7

Revision; 2004 April LT-6 2003 Q45
HEADLAMP (FOR USA)

q through 20A fuse [No. 55, located in the fuse, fusible link and relay block (J/B)], and
q to headlamp relay-2 terminals 2 and 5 A
q through 15A fuse [No. 73, located in the fuse, fusible link and relay block (J/B)], and
q to headlamp battery saver control unit terminal 7
B
q through 10A fuse [No. 6, located in the fuse block (J/B) No. 1].
When the ignition switch is in the ON or START position, power is supplied
q to headlamp battery saver control unit terminal 1 C
q to BCM terminal 68
q through 10A fuse [No. 1, located in the fuse block (J/B) No. 1].
When the ignition switch is in the ACC or ON position, power is supplied D
q to BCM terminal 60
q through 10A fuse [No. 21, located in the fuse block (J/B) No. 1].
Ground is supplied E
q to headlamp battery saver control unit terminals 4 and 11
q through body grounds M25 and M115.
F
Power Supply to Low Beam and High Beam
When lighting switch is in 2ND or PASS position, ground is supplied
q to headlamp relay-1 and 2 terminals 1 from headlamp battery saver control unit terminals 2 and 8 G
q through headlamp battery saver control unit terminals 3 and 9,
q through lighting switch terminals 12 and 8
q through body grounds M25 and M115. H
Headlamp relays are energized and then power is supplied to headlamps.
Low Beam Operation I
When lighting switch is turned to the 2ND position and placed in LOW position, power is supplied
q from terminals 5 and 6 of headlamp relay-1
q to terminal 7 of each headlamp J
Ground is supplied
q to terminal 8 of each headlamp
q through body grounds E42 and E62. LT
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-pass Operation L
When lighting switch is turned to the 2ND position and placed in HIGH position or PASS position, power is
supplied
q from terminal 3 of headlamp relay-2 M
q to terminal 13 of each headlamp, and
q to combination meter terminal 48 for the HIGH BEAM indicator.
Ground is supplied
q to headlamp LH terminal 14
q to combination meter terminal 47 for the HIGH BEAM indicator
q through lighting switch terminals 9 and 8
q through body grounds M25 and M115, and
q to headlamp RH terminal 14
q through lighting switch terminals 6 and 5
q through body grounds M25 and M115.
With power and ground supplied, the high beams headlamps and the HIGH BEAM indicator illuminate.
NOTE:
The lamp will be force to turn off when the driver door is opened with the ignition switch in OFF or
ACC position. (when except for lighting switch is "AUTO" position)

Revision; 2004 April LT-7 2003 Q45
HEADLAMP (FOR USA)

BATTERY SAVER CONTROL
When the ignition switch is turned from ON (or START) to OFF (or ACC) positions while headlamps are illumi-
nated, the RAP signal is supplied to terminal 10 of the headlamp battery saver control unit from BCM terminal
135.
After counting 45 seconds by the RAP signal from the BCM to headlamp battery saver control unit, the ground
supply to terminal 1 of the headlamp relay-1 and -2 from headlamp battery saver control unit terminals 2 and 8
is terminated.
Then the headlamps are turned off.
The headlamps are turned off when driver or passenger side door is opened even if 45 seconds have not
passed after ignition switch is turned from ON (or START) to OFF (or ACC) positions while headlamps are illu-
minated.
When the lighting switch is turned from OFF to 2ND after headlamps are turned to off by the battery saver con-
trol, ground is supplied
q to headlamp battery saver control unit terminals 5 and 13 from lighting switch terminal 11, and then,
q to headlamp relay-1 and 2 terminals 1 from headlamp battery saver control unit terminals 2 and 8
q through headlamp battery saver control unit terminals 3 and 9, and
q through lighting switch terminal 12.
Then headlamps illuminate again.
AUTO LIGHT OPERATION
The auto light control system has an optical sensor inside it that detects outside brightness.
When the lighting switch is in AUTO position, it automatically turns on/off the parking (clearance) lamps and
the headlamps in accordance with the ambient light. Sensitivity can be adjusted in four steps. For the details of
the setting, refer to LT-20, "SETTING CHANGE FUNCTION FOR AUTO LIGHT SYSTEM" .
When lighting switch is in "AUTO" position, ground is supplied
q to BCM terminal 14
q from lighting switch terminal 42.
When ignition switch is turn to "ON" or "START" position and
Outside brightness is darker than prescribed level, ground is supplied
q to headlamp relay-1 and 2 terminals 1
q through headlamp battery saver control unit terminal 2, 8 and 4, 11, and
q to tail lamp relay terminal 1
q through headlamp battery saver control unit terminals 6, 14 and 4,11.
Then headlamp relay-1, 2 and tail lamp relay are energized, headlamps (low or high) and tail lamps are illumi-
nate according to switch position.
Shut Off Delay
While the headlamps are lit in the auto-light operation mode, the ignition switch is turned from "ON" to "OFF"
position. The BCM no longer receives a voltage signal at terminal 68. This starts the auto light shut off delay
timer. The timer is set based on the resistance value at BCM terminal 6. With the timer running, the headlamps
remain lit. When the timer reaches the end of its cycle, the headlamps turn off. Headlamp lighting time can be
adjusted from about 0 to 3 minutes. (This function is not applicable to the tail lamps.)
Auto light shut off delay timer can be adjusted in seven steps. For the details of the setting, refer to LT-20,
"SETTING CHANGE FUNCTION FOR AUTO LIGHT SYSTEM" .
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to BL-153, "VEHICLE
SECURITY (THEFT WARNING) SYSTEM" .
XENON HEADLAMP
Xenon type headlamp is adopted 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 added lighting power, electronic control
of the power supply gives the headlamps stable quality and tone color.
Followings are some of the many advantages of the xenon type headlamp.
q The light produced by the headlamps is white color approximating to sunlight that is easy on the eyes.
q Light output is nearly double that of halogen headlamps, affording increased area of illumination.

Revision; 2004 April LT-8 2003 Q45
HEADLAMP (FOR USA)

q The light features a high relative spectral distribution at wavelengths to the human eye is most sensitive,
which means that even in the rain, more light is reflected back from the road surface toward the vehicle, A
for added visibility.
q Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
B

Revision; 2004 April LT-9 2003 Q45
HEADLAMP (FOR USA)

Schematic EKS000SY

TKWM0332E

Revision; 2004 April LT-10 2003 Q45
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- EKS000SZ

TKWM0537E

Revision; 2004 April LT-11 2003 Q45
HEADLAMP (FOR USA)

TKWM0392E

Revision; 2004 April LT-12 2003 Q45
HEADLAMP (FOR USA)

TKWM0007E

Revision; 2004 April LT-13 2003 Q45
HEADLAMP (FOR USA)

TKWM0333E

Revision; 2004 April LT-14 2003 Q45
HEADLAMP (FOR USA)

TKWM0334E

Revision; 2004 April LT-15 2003 Q45
HEADLAMP (FOR USA)

TKWM0335E

Revision; 2004 April LT-16 2003 Q45
HEADLAMP (FOR USA)

Terminals and Reference Value for Battery Saver Control Unit EKS000T4

A
Terminal Wire Reference value
Item Condition
No. color (Approximate values)
1 W/G IGN power supply Ignition switch OFF or ACC Less than 1V
B
ON or START Battery voltage
2 R/Y Headlamp relay Ignition switch OFF or ACC More than 45 seconds Battery voltage
OUT1 (with lighting switch after ignition switch is C
except OFF or 1ST) turned OFF or ACC
Within 45 seconds Less than 1V
after ignition switch is
turned OFF or ACC D
ON or START Less than 1V
Headlamps illuminate by auto light control. Less than 1V
E
3 R/B Headlamp switch1 Lighting switch 1ST 2.4V
PASS or 2ND Less than 1V
Headlamps illuminate by auto light control. Less than 1V F
4 B Ground -- --
5 L Tail lamp switch1 lighting switch OFF Battery voltage
G
1ST or 2ND Less than 1V
6 LG/B Tail lamp relay Ignition switch OFF or ACC More than 45 seconds Battery voltage
OUT1 (with lighting switch after ignition switch is
H
1ST or 2ND) turned OFF or ACC
Within 45 seconds Less than 1V
after ignition switch is
turned OFF or ACC I
ON or START Less than 1V
Headlamps illuminate by auto light control. Less than 1V
J
7 Y/G BAT power supply -- Battery voltage
8 R/Y Headlamp relay Ignition switch OFF or ACC More than 45 seconds Battery voltage
OUT2 (with lighting switch after ignition switch is
LT
except OFF or 1ST) turned OFF or ACC
With 45 seconds after Less than 1V
ignition switch is
turned OFF or ACC L
ON or START Less than 1V
Headlamps illuminate by auto light control. Less than 1V
M
9 R/B Headlamp switch2 Lighting switch 1ST 2.4V
PASS or 2ND Less than 1V
Headlamps illuminate by auto light control. Less than 1V
10 Y/G RAP signal Ignition switch OFF or ACC (After more than 45 sec- Battery voltage
onds with ignition switch turned OFF or
ACC)
ON or START Less than 1V
11 B Ground -- --
13 L Tail lamp switch2 Lighting switch OFF Battery voltage
1ST or 2ND Less than 1V

Revision; 2004 April LT-17 2003 Q45
HEADLAMP (FOR USA)

Terminal Wire Reference value
Item Condition
No. color (Approximate values)
14 LG/B Tail lamp relay Ignition switch OFF or ACC More than 45 seconds Battery voltage
OUT2 (with lighting switch after ignition switch is
1ST or 2ND) turned OFF or ACC
Within 45 seconds Less than 1V
after ignition switch is
turned OFF or ACC
ON or START Less than 1V
Headlamps illuminate by auto light control. Less than 1V

Terminals and Reference Value for BCM EKS000XP

Measuring condition
Terminal Wire Reference value
Item Ignition
NO. color Operation or condition (Approximate values)
switch
3 R/L Parking (clearance) lamp sig- Lighting switch: OFF Less than 1V
nal -- 1st
ON Battery voltage
5 R/Y Headlamp relay signal ON Lighting switch: Light is applied to optical Battery voltage
AUTO sensor.
Light is not applied to Less than 1V
optical sensor.
6 L/Y Automatic brightness adjust- ON Lighting switch: Light is applied to optical Less than 1V
ment signal ON sensor.
Light is not applied to Battery voltage
optical sensor.
11 LG/B Tail lamp relay control signal ON Light switch: Light is applied to optical Battery voltage
AUTO sensor.
Light is not applied to Less than 1V
optical sensor.
14 Y Lighting switch AUTO signal ON Lighting switch AUTO Less than 1V
OFF 8V
17 BR/Y Data link RX -- -- --
18 P Data link TX -- -- --
30 PU Communication signal TX --
-- --
(BCM-AV: Transmission)
31 LG Communication signal RX --
-- --
(AV-BCM: Receiving)
37 W/G Passenger door switch signal OFF Passenger door ON (open) Less than 1V
switch
OFF (close) Battery voltage
52 G/R Optical sensor signal ON Light is applied to optical sensor. 3V
Light is not applied to optical sensor. Less than 1V
56 B Ground -- -- --
58 Y/B Optical sensor ground ON -- Less than 1V
59 SB Optical sensor power supply ON -- 5V
60 L/OR ACC power supply ACC -- Battery voltage
68 W/B IGN power supply ON -- Battery voltage
Key withdrawn (OFF) Less than 1V
69 PU/W Key-in detection switch signal OFF
Key inserted (ON) Battery voltage
105 Y/L BAT power supply OFF -- Battery voltage
113 B Ground -- -- --

Revision; 2004 April LT-18 2003 Q45
HEADLAMP (FOR USA)

Measuring condition
Terminal Wire Reference value A
Item Ignition
NO. color Operation or condition (Approximate values)
switch
135 Y/G OFF When headlamp battery saver timer is Less than 1V
RAP output signal B
operated.
142 W/R Driver door switch signal OFF Driver door ON (open) Less than 1V
switch
OFF (close) Battery voltage
C

Revision; 2004 April LT-19 2003 Q45
HEADLAMP (FOR USA)

Work Flow EKS0014U

1. Confirm the symptom or customer complaint.
2. Understand system description. Refer to LT-6, "System Description" .
3. Perform the preliminary check. Refer to LT-20, "Preliminary Check" .
4. Find the cause of trouble following the symptom chart and repair or replace as necessary. Refer to LT-25,
"Symptom Chart" .
5. Does the auto light system operate normally? When yes, go to step 6. When no, go to step 4.
6. Inspection end.
Preliminary Check EKS0014V

SETTING CHANGE FUNCTION FOR AUTO LIGHT SYSTEM
q Setting for each operation can be changed using CONSULT-II and a display unit.

SKIA3782E

INSPECTION FOR POWER SUPPLY AND GROUND CIRCUIT
1. FUSE CHECK
Check if any of the following fuses in BCM are blown.
Unit Power source Terminal Fuse No.
BAT power supply 105 3
BCM
ACC power supply 60 21
IGN power supply 68 1
Refer to PG-2, "POWER SUPPLY ROUTING" .
OK or NG
OK >> GO TO 2.
NG >> If the fuse is brown be sure to eliminate cause of incident before installing new fuse.

Revision; 2004 April LT-20 2003 Q45
HEADLAMP (FOR USA)

2. POWER SUPPLY CIRCUIT CHECK
A
1. Disconnect the BCM connector.
2. Check voltage between BCM and ground.
B
Terminals
Unit Power
(wire color) condition Voltage
source
Connector (+) (

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