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K ELECTRICAL

B
SECTION
LIGHTING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 4 . Headlamp Does Not Change To High Beam (One F
Precautions for Supplemental Restraint System Side) ...................................................................... 30
.
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- High Beam Indicator Lamp Does Not Illuminate .... 31 .
SIONER" ................................................................. 4
. Headlamp Low Beam Does Not Illuminate (Both G
General precautions for service operations ............ 5 . Sides) .................................................................... 31
.
Wiring Diagrams and Trouble Diagnosis ................. 5 . Headlamp Low Beam Does Not Illuminate (One
HEADLAMP (FOR USA) ........................................... 6 . Side) ...................................................................... 34
.
H
Component Parts and Harness Connector Location 6 ..... Headlamp RH Low Beam and High Beam Does Not
System Description ................................................. 6 . Illuminate ............................................................... 35
.
OUTLINE .............................................................. 6
. Headlamp LH Low Beam and High Beam Does Not
COMBINATION SWITCH READING FUNCTION 8 ..... Illuminate ............................................................... 35
. I
EXTERIOR LAMP BATTERY SAVER CONTROL 8 ..... Headlamps Do Not Turn OFF ................................ 36 .
AUTO LIGHT OPERATION .................................. 8 . CAUTION: ............................................................. 38.
VEHICLE SECURITY SYSTEM ........................... 8 . Xenon Headlamp Trouble Diagnosis ..................... 38 . J
XENON HEADLAMP (IF EQUIPPED) ................. 8 . Aiming Adjustment ................................................. 39 .
CAN Communication System Description ............... 8 . LOW BEAM AND HIGH BEAM .......................... 40 .
Schematic ............................................................... 9
. Bulb Replacement ................................................. 40 . LT
HALOGEN TYPE ................................................. 9 . HEADLAMP ........................................................ 40 .
XENON TYPE .................................................... 10 . FRONT TURN SIGNAL LAMP ........................... 40 .
Wiring Diagram -- H/LAMP -- ...............................11 . Combination Lamp Removal and Installation ........ 41 .
HALOGEN TYPE ................................................11 . Disassembly and Assembly ................................... 41 . L
XENON TYPE .................................................... 15 . DISASSEMBLY .................................................. 41 .
Terminals and Reference Value for BCM .............. 19 . ASSEMBLY ........................................................ 42 .
Terminals and Reference Values for IPDM E/R .... 20 . HEADLAMP (FOR CANADA) - DAYTIME LIGHT M
How to Proceed With Trouble Diagnosis ............... 20 . SYSTEM - ................................................................. 43
.
Preliminary Check ................................................. 21 . Component Parts and Harness Connector Location 43 ...
CHECK POWER SUPPLY AND GROUND CIR- System Description ................................................ 43 .
CUIT ................................................................... 21
. OUTLINE ............................................................ 43
.
CONSULT-II Function (BCM) ................................ 23 . DAYTIME LIGHT OPERATION .......................... 44 .
CONSULT-II OPERATION ................................. 23 . COMBINATION SWITCH READING FUNCTION 44 ...
WORK SUPPORT .............................................. 24 . AUTO LIGHT OPERATION ................................ 44 .
DATA MONITOR ................................................ 24 . CAN Communication System Description ............. 44 .
ACTIVE TEST .................................................... 25 . Schematic .............................................................. 45
.
SELF-DIAGNOSTIC RESULTS ......................... 26 . Wiring Diagram -- DTRL -- .................................. 46 .
CONSULT-II Function (IPDM E/R) ........................ 26 . Terminals and Reference Value for BCM .............. 49 .
CONSULT-II OPERATION ................................. 26 . How to Proceed With Trouble Diagnosis ............... 50 .
DATA MONITOR ................................................ 27 . Preliminary Check ................................................. 50 .
ACTIVE TEST .................................................... 28 . CHECK BCM CONFIGURATION ....................... 50 .
Headlamp Does Not Change To High Beam (Both INSPECTION FOR POWER SUPPLY AND
Sides) .................................................................... 28
. GROUND CIRCUIT ............................................ 50 .

Revision: June 2004 LT-1 2004 Maxima
INSPECTION PARKING BRAKE SWITCH CIR- Front Fog lamps Does Not Illuminate (Both Sides)...84
CUIT ................................................................... 51
. Front Fog Lamp Does Not Illuminate (One Side) ...86
CONSULT-II Function (BCM) ................................. 53 . Aiming Adjustment .................................................88 .
CONSULT-II OPERATION .................................. 53 . Bulb Replacement ..................................................89 .
DATA MONITOR ................................................. 54 . Removal and Installation ........................................89 .
ACTIVE TEST .................................................... 55 . TURN SIGNAL AND HAZARD WARNING LAMPS...90
SELF-DIAGNOSTIC RESULTS .......................... 55 . Component Parts and Harness Connector Location ...90
Daytime Light Control Does Not Operate Properly 56 ... System Description ................................................90 .
Aiming Adjustment ................................................. 57 . OUTLINE ............................................................90.
Bulb Replacement ................................................. 58 . TURN SIGNAL OPERATION ..............................90 .
Removal and Installation ....................................... 58 . HAZARD LAMP OPERATION ............................91 .
Disassembly and Assembly ................................... 58 . REMOTE KEYLESS ENTRY SYSTEM OPERA-
AUTO LIGHT SYSTEM ............................................ 59 . TION ...................................................................92
.
Component Parts and Harness Connector Location 59 ... COMBINATION SWITCH READING FUNCTION ...92
System Description ................................................ 59 . CAN Communication System Description .............92 .
OUTLINE ............................................................ 59
. Schematic ..............................................................93
.
COMBINATION SWITCH READING FUNCTION 60 ... Wiring Diagram -- TURN -- ..................................94 .
EXTERIOR LAMP BATTERY SAVER CONTROL 60 ... Terminals and Reference Value for BCM ...............97 .
DELAY TIMER FUNCTION ................................ 60 . How to Proceed With Trouble Diagnosis ...............98 .
CAN Communication System Description ............. 60 . Preliminary Check ..................................................99 .
Major Components and Functions ......................... 60 . CHECK POWER SUPPLY AND GROUND CIR-
Schematic .............................................................. 61
. CUIT ....................................................................99
.
Wiring Diagram -- AUTO/L -- ............................... 62 . CONSULT-II Function (BCM) ............................... 101 .
Terminals and Reference Value for BCM ............... 65 . CONSULT-II OPERATION ................................ 101 .
Terminals and Reference Values for IPDM E/R ..... 66 . DATA MONITOR ............................................... 102 .
How to Proceed With Trouble Diagnosis ............... 67 . ACTIVE TEST ................................................... 102 .
Preliminary Check ................................................. 67 . Turn Signal Lamp Does Not Operate ................... 103 .
SETTING CHANGE FUNCTIONS ...................... 67 . Rear Turn Signal Lamp Does Not Operate .......... 104 .
CHECK POWER SUPPLY AND GROUND CIR- Hazard Warning Lamp Does Not Operate But Turn
CUIT ................................................................... 67
. Signal Lamps Operate ......................................... 105 .
CONSULT-II Function (BCM) ................................. 69 . Turn Signal Indicator Lamp Does Not Operate .... 107 .
CONSULT-II OPERATION .................................. 69 . Bulb Replacement (Front Turn Signal Lamp) ....... 107 .
WORK SUPPORT .............................................. 70 . Bulb Replacement (Rear Turn Signal Lamp) ....... 107 .
DATA MONITOR ................................................. 70 . Removal and Installation of Front Turn Signal Lamp .107
ACTIVE TEST .................................................... 71 . Removal and Installation of Rear Turn Signal Lamp.107
SELF-DIAGNOSTIC RESULTS .......................... 72 . CORNERING LAMP ............................................... 108 .
CONSULT-II Function (IPDM E/R) ......................... 72 . Component Parts and Harness Connector Location .108
CONSULT-II OPERATION .................................. 72 . System Description .............................................. 108 .
DATA MONITOR ................................................. 73 . OUTLINE .......................................................... 108.
ACTIVE TEST .................................................... 74 . CORNERING LAMP OPERATION ................... 108 .
Trouble Diagnosis Chart by Symptom ................... 74 . COMBINATION SWITCH READING FUNCTION .109
Lighting Switch Inspection ..................................... 75 . CAN Communication System Description ........... 109 .
Optical Sensor System Inspection ......................... 75 . Schematic ............................................................ 110
.
Removal and Installation of Optical Sensor ........... 76 . Wiring Diagram -- CORNER -- .......................... 111 .
FRONT FOG LAMP ................................................. 77 . Terminals and Reference Value for BCM ............. 114 .
Component Parts and Harness Connector Location 77 ... Terminals and Reference Values for IPDM E/R ... 115 .
System Description ................................................ 77 . How to Proceed With Trouble Diagnosis ............. 115 .
OUTLINE ............................................................ 77
. Preliminary Check ................................................ 116 .
COMBINATION SWITCH READING FUNCTION 78 ... CHECK POWER SUPPLY AND GROUND CIR-
EXTERIOR LAMP BATTERY SAVER CONTROL 78 ... CUIT .................................................................. 116
.
CAN Communication System Description ............. 78 . CONSULT-II Functions ........................................ 118 .
Wiring Diagram -- F/FOG -- ................................. 79 . CONSULT-II OPERATION ................................ 118 .
Terminals and Reference Value for BCM ............... 81 . DATA MONITOR ............................................... 119 .
Terminals and Reference Values for IPDM E/R ..... 82 . ACTIVE TEST ................................................... 119 .
How to Proceed With Trouble Diagnosis ............... 82 . Cornering Lamp Does Not Operate ..................... 120 .
Preliminary Check ................................................. 83 . Removal and Installation of Cornering Lamp ....... 121 .
CHECK POWER SUPPLY AND GROUND CIR- LIGHTING AND TURN SIGNAL SWITCH ............. 122 .
CUIT ................................................................... 83
. Removal and Installation ...................................... 122 .
CONSULT-II Functions .......................................... 84 .

Revision: June 2004 LT-2 2004 Maxima
HAZARD SWITCH ................................................. 123 . REAR COMBINATION LAMP ................................ 149 .
Removal and Installation ..................................... 123 . Bulb Replacement ............................................... 149 . A
COMBINATION SWITCH ....................................... 124 . Removal and Installation ..................................... 149 .
Wiring Diagram -- COMBSW -- ......................... 124 . INTERIOR ROOM LAMP ....................................... 150 .
Combination Switch Reading Function ............... 125 . Component Parts and Harness Connector Location 150 . B
CONSULT-II Function (BCM) .............................. 125 . System Description .............................................. 151 .
CONSULT-II OPERATION ............................... 125 . POWER SUPPLY AND GROUND ................... 151 .
DATA MONITOR .............................................. 126 . SWITCH OPERATION ..................................... 152 .
Combination Switch Inspection ........................... 127 . ROOM LAMP TIMER OPERATION ................. 153 . C
Removal and Installation ..................................... 129 . INTERIOR LAMP BATTERY SAVER CONTROL 153 .
Switch Circuit Inspection ..................................... 129 . Schematic ............................................................ 155
.
STOP LAMP .......................................................... 130 . Wiring Diagram -- ROOM/L -- ........................... 156 . D
System Description ............................................. 130 . Terminals and Reference Value for BCM ............ 163 .
Wiring Diagram -- STOP/L -- ............................. 131 . How to Proceed With Trouble Diagnosis ............. 164 .
High-Mounted Stop Lamp ................................... 132 . Preliminary Check ............................................... 164 . E
BULB REPLACEMENT, REMOVAL AND INSPECTION FOR POWER SUPPLY AND
INSTALLATION ................................................ 132 . GROUND CIRCUIT .......................................... 164 .
Stop Lamp ........................................................... 132
. CONSULT-II Function (BCM) .............................. 166 .
BULB REPLACEMENT .................................... 132 . CONSULT-II OPERATION ................................ 166 . F
REMOVAL AND INSTALLATION ..................... 132 . WORK SUPPORT ............................................ 167 .
BACK-UP LAMP ................................................... 133 . DATA MONITOR .............................................. 167 .
Wiring Diagram -- BACK/L -- ............................ 133 . ACTIVE TEST .................................................. 168 . G
Bulb Replacement ............................................... 134 . Interior Room Lamp Control Does Not Operate .. 168 .
Removal and Installation ..................................... 134 . Map Lamp Control Does Not Operate ................. 170 .
PARKING, LICENSE PLATE AND TAIL LAMPS .. 135 . Personal Lamp Control Does Not Operate .......... 171 . H
Component Parts and Harness Connector Location 135 . Ignition Keyhole Illumination Control Does Not
System Description ............................................. 135 . Operate ................................................................ 172
.
OPERATION BY LIGHTING SWITCH ............. 136 . All Step Lamps Do Not Operate .......................... 174 .
I
COMBINATION SWITCH READING FUNCTION 136 . All Foot Lamps Do Not Operate .......................... 175 .
EXTERIOR LAMP BATTERY SAVER CONTROL 136 . All Interior Room Lamps Do Not Operate ............ 175 .
CAN Communication System Description ........... 136 . ILLUMINATION ...................................................... 176 .
Schematic ........................................................... 137
. Component Parts and Harness Connector Location 176 . J
Wiring Diagram -- TAIL/L -- ............................... 138 . System Description .............................................. 176 .
Terminals and Reference Value for BCM ............ 141 . ILLUMINATION OPERATION BY LIGHTING
Terminals and Reference Values for IPDM E/R .. 142 . SWITCH ........................................................... 177
. LT
How to Proceed With Trouble Diagnosis ............. 142 . EXTERIOR LAMP BATTERY SAVER CONTROL 178 .
Preliminary Check ............................................... 142 . CAN Communication System Description ........... 178 .
CHECK POWER SUPPLY AND GROUND CIR- Schematic ............................................................ 179
. L
CUIT ................................................................. 142
. Wiring Diagram -- ILL -- ..................................... 180 .
CONSULT-II Functions ........................................ 143 . WITH LEFT AND RIGHT FRONT POWER WIN-
Parking, License Plate and/or Tail Lamps Do Not DOW ANTI-PINCH SYSTEM ........................... 186 .
Illuminate ............................................................. 144
. WITH FRONT AND REAR POWER WINDOW M
Parking, License Plate and Tail Lamps Do Not Turn ANTI-PINCH SYSTEM ..................................... 187 .
OFF (After Approx. 10 Minutes) .......................... 147 . Removal and Installation ..................................... 188 .
Front Parking Lamp ............................................. 148 . ILLUMINATION CONTROL SWITCH ............... 188 .
BULB REPLACEMENT .................................... 148 . BULB SPECIFICATIONS ....................................... 189 .
Tail Lamp ............................................................. 148
. Headlamp ............................................................ 189
.
BULB REPLACEMENT .................................... 148 . Exterior Lamp ...................................................... 189
.
Rear Side Marker Lamp ...................................... 148 . Interior Lamp/Illumination .................................... 189 .
BULB REPLACEMENT .................................... 148 .

Revision: June 2004 LT-3 2004 Maxima
PRECAUTIONS

PRECAUTIONS PFP:00011

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS005K4

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.

Revision: June 2004 LT-4 2004 Maxima
PRECAUTIONS

General precautions for service operations EKS0056G

A
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 B
headlamp (including lamp bulb).
q Turn the lighting switch OFF before disconnecting and connect-
ing the connector. C
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- D
WKIA0460E
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. E
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 F
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 G
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
H
reflector (dirt, clouding). Always prepare a new bulb and have it
on hand when replacing the bulb. EL-3422D

q Do not use organic solvent (paint thinner or gasoline) to clean
lamps and to remove old sealant. I

Wiring Diagrams and Trouble Diagnosis EKS0056H

When you read wiring diagrams, refer to the following: J
q Refer to GI-12, "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: LT
q Refer to GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.
q Refer to GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
L

Revision: June 2004 LT-5 2004 Maxima
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010

Component Parts and Harness Connector Location EKS005BO

WKIA3127E

System Description EKS005BP

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
signal requesting the headlamps (and tail lamps) illuminate. This input signal is communicated to the IPDM E/
R (intelligent power distribution module engine room) across 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,
when energized, direct power to the respective headlamps, which then illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move and a high beam and a low beam are
changed.
OUTLINE
Power is supplied at all times
q to headlamp high relay, located in the IPDM E/R
q to headlamp low relay, located in the IPDM E/R
q to ignition relay, located in the IPDM E/R
q through 15A fuse (No. 34, located in the IPDM E/R)
q to CPU in the IPDM E/R
q through 50A fusible link (letter f , located in the fuse and fusible link box)
q to BCM terminal 55
q through 10A fuse [No. 21, located in the fuse block (J/B)]
q to BCM terminal 42
q through 10A fuse [No. 19, located in the fuse block (J/B)]
q to combination meter terminal 24.
With the ignition switch in the ON or START position, power is supplied
q to ignition relay, located in the IPDM E/R

Revision: June 2004 LT-6 2004 Maxima
HEADLAMP (FOR USA)

q through 10A fuse [No. 1, located in the fuse block (J/B)]
q to BCM terminal 38 A
q through 10A fuse [No. 14, located in the fuse block (J/B)]
q to combination meter terminal 23.
B
With the ignition switch in the ACC or ON position, power is supplied
q through 10A fuse [No. 6, located in the fuse block (J/B)]
q to BCM terminal 11. C
Ground is supplied at all times
q to BCM terminals 49 (early production) and 52
q to combination meter terminals 10, 11 and 12 D
q through grounds M57, M61 and M79
q to IPDM E/R terminals 38 and 60
q through grounds E15 and E24. E

Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps to illuminate. F
This input signal is communicated to the IPDM E/R across the CAN communication lines. The CPU in the
IPDM E/R controls the headlamp low relay coil, which when energized, directs power
q to 15A fuse (No. 36, located in the IPDM E/R)
G
q through IPDM E/R terminal 20
q to headlamp RH terminal 3
q to 15A fuse (No. 45, located in the IPDM E/R) H
q through IPDM E/R terminal 30
q to headlamp LH terminal 3.
Ground is supplied at all times I
q to headlamp RH terminal 4
q through grounds E15 and E24
J
q to headlamp LH terminal 4
q through grounds E15 and E24.
With power and ground supplied, low beam headlamps illuminate.
LT
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 the IPDM E/R across L
the CAN communication lines. The CPU in the IPDM E/R controls the headlamp high relay coil and low relay
coil, which when energized, directs power
q to 15A fuse (No. 36, located in the IPDM E/R) M
q through IPDM E/R terminal 20
q to headlamp RH terminal 3
q to 15A fuse (No. 45, located in the IPDM E/R)
q through IPDM E/R terminal 30
q to headlamp LH terminal 3
q to 10A fuse (No. 40, located in the IPDM E/R)
q through IPDM E/R terminal 27
q to headlamp RH terminal 7
q to 10A fuse (No. 38, located in the IPDM E/R)
q through IPDM E/R terminal 28
q to headlamp LH terminal 7.
Ground is supplied at all times
q to headlamp RH terminals 4 and 8
q through grounds E15 and E24

Revision: June 2004 LT-7 2004 Maxima
HEADLAMP (FOR USA)

q to headlamp LH terminals 4 and 8
q through grounds E15 and E24.
With power and ground supplied, the high beam headlamps illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move and a high beam and a low beam are
changed.
The unified meter and A/C amp that received the high beam request signal by BCM across the CAN commu-
nication makes a high beam indicator lamp turn on in combination meter.
COMBINATION SWITCH READING FUNCTION
Refer to LT-125, "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 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.
AUTO LIGHT OPERATION
Refer to LT-59, "System Description" in "AUTO LIGHT SYSTEM".
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to BL-78, "VEHICLE
SECURITY (THEFT WARNING) SYSTEM" .
XENON HEADLAMP (IF EQUIPPED)
Xenon type headlamp is adopted to the low and high 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.
Following are some of the many advantages of the xenon type headlamp.
q The light produced by the headlamps is a white color comparable to sunlight that is easy on the eyes.
q Light output is nearly double that of halogen headlamps, affording increased area of illumination.
q The light features a high relative spectral distribution at wavelengths to which the human eye is most sen-
sitive. This means that even in the rain, more light is reflected back from the road surface toward the vehi-
cle, for added visibility.
q Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
CAN Communication System Description EKS005BR

Refer to LAN-8, "CAN COMMUNICATION" .

Revision: June 2004 LT-8 2004 Maxima
HEADLAMP (FOR USA)

Schematic EKS005BS

HALOGEN TYPE A

WKWA1806E

Revision: June 2004 LT-9 2004 Maxima
HEADLAMP (FOR USA)

XENON TYPE

WKWA1807E

Revision: June 2004 LT-10 2004 Maxima
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- EKS0056L

HALOGEN TYPE A

WKWA1808E

Revision: June 2004 LT-11 2004 Maxima
HEADLAMP (FOR USA)

LKWA0196E

Revision: June 2004 LT-12 2004 Maxima
HEADLAMP (FOR USA)

LKWA0197E

Revision: June 2004 LT-13 2004 Maxima
HEADLAMP (FOR USA)

LKWA0198E

Revision: June 2004 LT-14 2004 Maxima
HEADLAMP (FOR USA)

XENON TYPE
A

WKWA1809E

Revision: June 2004 LT-15 2004 Maxima
HEADLAMP (FOR USA)

LKWA0200E

Revision: June 2004 LT-16 2004 Maxima
HEADLAMP (FOR USA)

LKWA0201E

Revision: June 2004 LT-17 2004 Maxima
HEADLAMP (FOR USA)

LKWA0202E

Revision: June 2004 LT-18 2004 Maxima
HEADLAMP (FOR USA)

Terminals and Reference Value for BCM EKS005BT

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

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

D
SKIA5291E

E
Lighting, turn, wiper OFF
3 R/Y Combination switch input 4 ON
Wiper dial position 4
F
SKIA5292E

Lighting, turn, wiper OFF
4 R/G Combination switch input 3 ON
Wiper dial position 4
H

SKIA5291E

5 R/B Combination switch input 2 I

Lighting, turn, wiper OFF
ON J
6 R/W Combination switch input 1 Wiper dial position 4

SKIA5292E
LT
11 V Ignition switch (ACC) ACC -- Battery voltage

L
Lighting, turn, wiper OFF
32 G/O Combination switch output 5 ON
Wiper dial position 4
M
SKIA5291E

Lighting, turn, wiper OFF
33 G/Y Combination switch output 4 ON
Wiper dial position 4

SKIA5292E

Lighting, turn, wiper OFF
34 L/B Combination switch output 3 ON
Wiper dial position 4

SKIA5291E

Revision: June 2004 LT-19 2004 Maxima
HEADLAMP (FOR USA)

Measuring condition
Terminal Wire Reference value
Signal name Ignition
No. color Operation or condition (Approx.)
switch
35 G/B Combination switch output 2

Lighting, turn, wiper OFF
ON
36 G/W Combination switch output 1 Wiper dial position 4

SKIA5292E

38 G Ignition switch (ON) ON -- Battery voltage
39 L CAN-H -- -- --
40 Y CAN-L -- -- --
42 Y/R Battery power supply OFF -- Battery voltage
49 (early B Ground
produc- ON -- 0V
tion)
52 B Ground ON -- 0V
55 W/B Battery power supply (fusible link) OFF -- Battery voltage

Terminals and Reference Values for IPDM E/R EKS005BU

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

Lighting switch OFF 0V
20 R/Y Headlamp low (RH) ON
2ND position ON Battery voltage
Lighting switch OFF 0V
27 L/W Headlamp high (RH) ON HIGH or PASS
position ON Battery voltage

Lighting switch OFF 0V
28 G Headlamp high (LH) ON HIGH or PASS
position ON Battery voltage

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

How to Proceed With Trouble Diagnosis EKS005BV

1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-6, "System Description" .
3. Perform the Preliminary Check. Refer to LT-21, "Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. Inspection End.

Revision: June 2004 LT-20 2004 Maxima
HEADLAMP (FOR USA)

Preliminary Check EKS005BW

CHECK POWER SUPPLY AND GROUND CIRCUIT A

1. CHECK FUSES AND FUSIBLE LINK
Check for blown fuses or fusible link. B
Unit Power source Fuse No.
Battery f
C
Battery 21
BCM
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6 D
34
36
E
IPDM E/R Battery 38
40
45 F
Refer to LT-11, "Wiring Diagram -- H/LAMP --" .
OK or NG
G
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
H
2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connector. I
2. Check voltage between BCM harness connector and ground.

Terminals Ignition switch position
J
(+)
Terminal (

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