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K ELECTRICAL

B
SECTION
LIGHTING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 4 . Bulb Replacement ................................................. 28 . F
Precautions for Supplemental Restraint System REMOVAL AND INSTALLATION OF HEAD-
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- LAMP BULB ....................................................... 28 .
SIONER" ................................................................. 4
. REMOVAL AND INSTALLATION OF FRONT G
General precautions for service operations ............ 4 . TURN SIGNAL/PARKING LAMP ........................ 29 .
Wiring Diagrams and Trouble Diagnosis ................. 4 . REMOVAL AND INSTALLATION OF FRONT
HEADLAMP (FOR USA) ........................................... 5 . SIDE MARKER LAMP ........................................ 29 .
H
Component Parts and Harness Connector Location 5 ..... Removal and Installation ....................................... 29 .
System Description ................................................. 5 . REMOVAL .......................................................... 29.
OUTLINE .............................................................. 5
. INSTALLATION .................................................. 29 .
BATTERY SAVER CONTROL ............................. 6 . Disassembly and Assembly ................................... 30 . I
VEHICLE SECURITY SYSTEM (PANIC ALARM) 6 ..... HEADLAMP (FOR CANADA) - DAYTIME LIGHT
CAN Communication System Description ............... 6 . SYSTEM - ................................................................. 31
.
Schematic ............................................................... 7
. Component Parts and Harness Connector Location 31 ... J
Wiring Diagram -- H/LAMP -- ................................ 8 . System Description ................................................ 32 .
Terminals and Reference Values for BCM ............ 12 . OUTLINE ............................................................ 32
.
Terminals and Reference Values for IPDM E/R .... 13 . DAYTIME LIGHT OPERATION .......................... 33 . LT
How to Proceed With Trouble Diagnosis ............... 13 . COMBINATION SWITCH READING FUNCTION 33 ...
Preliminary Check ................................................. 14 . CAN Communication System Description ............. 33 .
CHECK POWER SUPPLY AND GROUND CIR- Schematic .............................................................. 34
.
CUIT ................................................................... 14
. Wiring Diagram -- DTRL -- .................................. 35 . L
CONSULT-II Function (BCM) ................................ 15 . Terminals and Reference Values for BCM ............. 39 .
CONSULT-II OPERATION ................................. 15 . How to Proceed With Trouble Diagnosis ............... 40 .
WORK SUPPORT .............................................. 16 . Preliminary Check ................................................. 40 . M
DATA MONITOR ................................................ 16 . CHECK BCM CONFIGURATION ....................... 40 .
ACTIVE TEST .................................................... 17 . INSPECTION FOR POWER SUPPLY AND
SELF-DIAGNOSTIC RESULTS ......................... 17 . GROUND CIRCUIT ............................................ 40 .
CONSULT-II Function (IPDM E/R) ........................ 18 . INSPECTION PARKING BRAKE SWITCH CIR-
CONSULT-II OPERATION ................................. 18 . CUIT ................................................................... 41
.
DATA MONITOR ................................................ 19 . CONSULT-II Functions .......................................... 42 .
ACTIVE TEST .................................................... 19 . Daytime Light Control Does Not Operate Properly
Headlamp HI Does Not Illuminate (Both Sides) .... 20 . (Normal Headlamps Operate Properly) ................. 42 .
Headlamp HI Does Not Illuminate (One Side) ...... 22 . Aiming Adjustment ................................................. 43 .
High Beam Indicator Lamp Does Not Illuminate ... 23 Bulb Replacement ................................................. 43 .
Headlamp LO Does Not Illuminate (Both Sides) ... 23 Removal and Installation ....................................... 43 .
Headlamp LO Does Not Illuminate (One Side) ..... 25 . Disassembly and Assembly ................................... 43 .
Headlamps Do Not Turn OFF ............................... 26 . FRONT FOG LAMP ................................................. 44 .
Aiming Adjustment ................................................ 27 . Component Parts and Harness Connector Location 44 ...
LOW BEAM AND HIGH BEAM .......................... 27 . System Description ................................................ 44 .
HEADLAMP AIMING .......................................... 28 . OUTLINE ............................................................ 44
.

Revision: February 2006 LT-1 2005 Xterra
COMBINATION SWITCH READING FUNCTION 45 ... Combination Switch Reading Function ..................75 .
EXTERIOR LAMP BATTERY SAVER CONTROL 45 ... CONSULT-II Function (BCM) .................................75 .
CAN Communication System Description ............. 45 . CONSULT-II OPERATION ..................................75 .
Wiring Diagram -- F/FOG -- ................................. 46 . DATA MONITOR .................................................76 .
Terminals and Reference Values for BCM ............. 48 . Combination Switch Inspection ..............................77 .
Terminals and Reference Values for IPDM E/R ..... 49 . Removal and Installation ........................................80 .
How to Proceed With Trouble Diagnosis ............... 49 . Switch Circuit Inspection ........................................80 .
Preliminary Check ................................................. 49 . STOP LAMP .............................................................81.
CHECK POWER SUPPLY AND GROUND CIR- System Description ................................................81 .
CUIT ................................................................... 49
. Wiring Diagram -- STOP/L -- ...............................82 .
CONSULT-II Functions .......................................... 50 . High-Mounted Stop Lamp ......................................84 .
Front Fog Lamps Do Not Illuminate (Both Sides) ... 51 BULB REPLACEMENT .......................................84 .
Front Fog Lamp Does Not Illuminate (One Side) ... 52 REMOVAL AND INSTALLATION ........................84 .
Aiming Adjustment ................................................. 53 . Stop Lamp ..............................................................84
.
Bulb Replacement ................................................. 55 . BULB REPLACEMENT .......................................84 .
REMOVAL .......................................................... 55. REMOVAL AND INSTALLATION ........................84 .
INSTALLATION ................................................... 55 . BACK-UP LAMP ......................................................85 .
Removal and Installation of Fog Lamp .................. 55 . Wiring Diagram -- BACK/L -- ...............................85 .
REMOVAL .......................................................... 55. Bulb Replacement ..................................................87 .
INSTALLATION ................................................... 55 . Removal and Installation ........................................87 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 56 PARKING, LICENSE PLATE AND TAIL LAMPS .....88 .
Component Parts and Harness Connector Location 56 ... Component Parts and Harness Connector Location ...88
System Description ................................................ 56 . System Description ................................................88 .
OUTLINE ............................................................ 56
. OPERATION BY LIGHTING SWITCH ................89 .
TURN SIGNAL OPERATION .............................. 56 . COMBINATION SWITCH READING FUNCTION ...89
HAZARD LAMP OPERATION ............................ 57 . EXTERIOR LAMP BATTERY SAVER CONTROL ...89
REMOTE KEYLESS ENTRY SYSTEM OPERA- CAN Communication System Description .............89 .
TION ................................................................... 58
. Schematic ..............................................................90
.
COMBINATION SWITCH READING FUNCTION 58 ... Wiring Diagram -- TAIL/L -- ..................................91 .
CAN Communication System Description ............. 58 . Terminals and Reference Values for BCM .............95 .
Wiring Diagram -- TURN -- .................................. 59 . Terminals and Reference Values for IPDM E/R .....96 .
Terminals and Reference Values for BCM ............. 62 . How to Proceed With Trouble Diagnosis ...............96 .
How to Proceed With Trouble Diagnosis ............... 63 . Preliminary Check ..................................................96 .
Preliminary Check ................................................. 64 . CHECK POWER SUPPLY AND GROUND CIR-
CHECK POWER SUPPLY AND GROUND CIR- CUIT ....................................................................96
.
CUIT ................................................................... 64
. CONSULT-II Functions ..........................................97 .
CONSULT-II Function (BCM) ................................. 65 . Parking, Side Marker, License Plate and/or Tail
CONSULT-II OPERATION .................................. 65 . Lamps Do Not Illuminate ........................................98 .
DATA MONITOR ................................................. 66 . Parking, Side Marker, License Plate and Tail Lamps
ACTIVE TEST .................................................... 66 . Do Not Turn OFF (After Approx. 10 Minutes) ...... 104 .
Turn Signal Lamp Does Not Operate .................... 67 . Front Parking Lamp ............................................. 104 .
Rear Turn Signal Lamp Does Not Operate ............ 68 . BULB REPLACEMENT ..................................... 104 .
Hazard Warning Lamp Does Not Operate But Turn Tail Lamp .............................................................. 104
.
Signal Lamps Operate ........................................... 69 . BULB REPLACEMENT ..................................... 104 .
Turn Signal Indicator Lamp Does Not Operate ...... 70 . REAR COMBINATION LAMP ................................ 105 .
Bulb Replacement (Front Turn Signal Lamp) ........ 71 . Bulb Replacement ................................................ 105 .
Bulb Replacement (Rear Turn Signal Lamp) ......... 71 . REMOVAL ......................................................... 105 .
Removal and Installation of Front Turn Signal Lamp 71 ... INSTALLATION ................................................. 105 .
Removal and Installation of Rear Turn Signal Lamp 71 ... Removal and Installation ...................................... 105 .
LIGHTING AND TURN SIGNAL SWITCH ............... 72 . REMOVAL ......................................................... 105 .
Removal and Installation ....................................... 72 . INSTALLATION ................................................. 105 .
REMOVAL .......................................................... 72. TRAILER TOW ....................................................... 107 .
INSTALLATION ................................................... 72 . Component Parts and Harness Connector Location .107
HAZARD SWITCH ................................................... 73 . System Description .............................................. 107 .
Removal and Installation ....................................... 73 . TRAILER TAIL LAMP OPERATION .................. 108 .
REMOVAL .......................................................... 73. TRAILER STOP, TURN SIGNAL AND HAZARD
INSTALLATION ................................................... 73 . LAMP OPERATION .......................................... 108 .
COMBINATION SWITCH ......................................... 74 . TRAILER POWER SUPPLY OPERATION ....... 108 .
Wiring Diagram -- COMBSW -- ........................... 74 .

Revision: February 2006 LT-2 2005 Xterra
Schematic ........................................................... 109 . Room/Map Lamp Control Does Not Operate ...... 134 .
Wiring Diagram -- T/TOW -- ...............................110 . Room Lamp 2nd Row Control Does Not Operate. 136 A
INTERIOR ROOM LAMP ........................................114 . All Interior Room Lamps Do Not Operate ............ 137 .
Component Parts and Harness Connector Location ..114 Ignition Keyhole Illumination Control Does Not
System Description ..............................................115 . Operate ................................................................ 137
. B
MODELS WITHOUT POWER DOOR LOCKS ..115 Cargo Lamp Control Does Not Operate With Switch
MODELS WITH POWER DOOR LOCKS .........116 . In DOOR Position ................................................ 139 .
Schematic ............................................................119 . ILLUMINATION ...................................................... 142 .
Wiring Diagram -- INT/L -- ................................ 121 . Component Parts and Harness Connector Location 142 . C
WITH POWER DOOR LOCKS ........................ 121 . System Description .............................................. 142 .
WITHOUT POWER DOOR LOCKS ................. 126 . ILLUMINATION OPERATION BY LIGHTING
Terminals and Reference Values for BCM .......... 129 . SWITCH ........................................................... 143
. D
How to Proceed With Trouble Diagnosis ............. 130 . EXTERIOR LAMP BATTERY SAVER CONTROL 143 .
Preliminary Check ............................................... 130 . CAN Communication System Description ........... 144 .
INSPECTION FOR POWER SUPPLY AND Schematic ............................................................ 145
. E
GROUND CIRCUIT .......................................... 130 . Wiring Diagram -- ILL -- ..................................... 147 .
CONSULT-II Function (BCM) .............................. 131 . Removal and Installation ..................................... 154 .
CONSULT-II OPERATION ............................... 131 . ILLUMINATION CONTROL SWITCH ............... 154 .
WORK SUPPORT ............................................ 132 . BULB SPECIFICATIONS ....................................... 155 . F
DATA MONITOR .............................................. 132 . Headlamp ............................................................ 155
.
ACTIVE TEST .................................................. 133 . Exterior Lamp ...................................................... 155
.
Room/Map Lamp Does Not Turn ON or OFF Prop- Interior Lamp/Illumination .................................... 155 . G
erly ...................................................................... 134
.

Revision: February 2006 LT-3 2005 Xterra
PRECAUTIONS

PRECAUTIONS PFP:00011

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS00EIB

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:
G 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.
G 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.
G 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 EKS00EIC

G Never work with wet hands.
G Turn the lighting switch OFF before disconnecting and connecting the connector.
G When checking the headlamp on/off operation, check it on vehicle and with the power connected to the
vehicle-side connector.
G 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.
G When the bulb has burned out, wrap it in a thick vinyl bag and discard. Do not break the bulb.
G Leaving the bulb removed from the headlamp housing for a long period of time can deteriorate the perfor-
mance of the lens and reflector (dirt, clouding). Always prepare a new bulb and have it on hand when
replacing the bulb.
G Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
Wiring Diagrams and Trouble Diagnosis EKS00EID

When you read wiring diagrams, refer to the following:
G Refer to GI-16, "How to Read Wiring Diagrams" in GI section.
G Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" for power distribution in PG section.
When you perform trouble diagnosis, refer to the following:
G Refer to GI-12, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.
G Refer to GI-28, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.

Revision: February 2006 LT-4 2005 Xterra
HEADLAMP (FOR USA)

HEADLAMP (FOR USA) PFP:26010
A
Component Parts and Harness Connector Location EKS00EIE

WKIA3908E

System Description EKS00EIF
J
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
requesting the headlamps (and tail lamps) illuminate. This input is communicated to the IPDM E/R (intelligent LT
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. When energized, these relays
direct power to the respective headlamps, which then illuminate. L
OUTLINE
Power is supplied at all times
M
G to ignition relay, located in the IPDM E/R, and
G to headlamp high relay, located in the IPDM E/R, and
G to headlamp low relay, located in the IPDM E/R, and
G through 20A fuse (No. 53, located in the IPDM E/R)
G to CPU of the IPDM E/R, and
G through 50A fusible link (letter g , located in the fuse and fusible link box)
G to BCM terminal 70.
With the ignition switch in the ON or START position, power is supplied
G to ignition relay, located in the IPDM E/R, and
G through 10A fuse [No. 1, located in the fuse block (J/B)]
G to BCM terminal 38.
Ground is supplied
G to BCM terminal 67
G through grounds M57, M61 and M79, and
G to IPDM E/R terminals 38 and 59
Revision: February 2006 LT-5 2005 Xterra
HEADLAMP (FOR USA)

G through grounds E9, E15 and E24.
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input requesting the headlamps to illuminate. This
input is communicated to the IPDM E/R across the CAN communication lines. The CPU of the IPDM E/R con-
trols the headlamp low relay coil. When energized, this relay directs power
G through 15A fuse (No. 41, located in the IPDM E/R)
G through IPDM E/R terminal 54
G to front combination lamp RH (headlamp) terminal 3, and
G through 15A fuse (No. 40, located in the IPDM E/R)
G through IPDM E/R terminal 52
G to front combination lamp LH (headlamp) terminal 3.
Ground is supplied
G to front combination lamp LH and RH (headlamp) terminal 2
G through grounds E9, E15 and E24.
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 request-
ing the headlamp high beams to illuminate. This input is communicated to the IPDM E/R across the CAN com-
munication lines. The CPU of the combination meter controls the ON/OFF status of the HIGH BEAM indicator.
The CPU of the IPDM E/R controls the headlamp high relay coil. When energized, this relay directs power
G through 10A fuse (No. 34, located in the IPDM E/R)
G through IPDM E/R terminal 56
G to front combination lamp RH (headlamp) terminal 1, and
G through 10A fuse (No. 35, located in the IPDM E/R)
G through IPDM E/R terminal 55
G to front combination lamp LH (headlamp) terminal 1.
Ground is supplied
G to front combination lamp LH and RH (headlamp) terminal 2
G through grounds E9, E15 and E24.
With power and ground supplied, the high beam headlamps illuminate.
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 feature is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, unless the combination switch (lighting
switch) position is changed. If the combination switch (lighting switch) position is changed, then the headlamps
are turned off.
VEHICLE SECURITY SYSTEM (PANIC ALARM)
The vehicle security system (panic alarm) will flash the high beams if the system is triggered. Refer to BL-73,
"PANIC ALARM OPERATION" .
CAN Communication System Description EKS00EIG

Refer to LAN-21, "CAN COMMUNICATION" .

Revision: February 2006 LT-6 2005 Xterra
HEADLAMP (FOR USA)

Schematic EKS00EIH

WKWA2534E

Revision: February 2006 LT-7 2005 Xterra
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- EKS00EII

WKWA2535E

Revision: February 2006 LT-8 2005 Xterra
HEADLAMP (FOR USA)

WKWA2536E

Revision: February 2006 LT-9 2005 Xterra
HEADLAMP (FOR USA)

WKWA2537E

Revision: February 2006 LT-10 2005 Xterra
HEADLAMP (FOR USA)

WKWA2538E

Revision: February 2006 LT-11 2005 Xterra
HEADLAMP (FOR USA)

Terminals and Reference Values for BCM EKS00EIJ

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

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

SKIA5291E

Lighting, turn, wiper OFF
3 SB Combination switch input 4 ON
Wiper dial position 4

SKIA5292E

Lighting, turn, wiper OFF
4 V Combination switch input 3 ON
Wiper dial position 4

SKIA5291E

5 L Combination switch input 2

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

SKIA5292E

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

SKIA5291E

Lighting, turn, wiper OFF
33 GR Combination switch output 4 ON
Wiper dial position 4

SKIA5292E

Lighting, turn, wiper OFF
34 G Combination switch output 3 ON
Wiper dial position 4

SKIA5291E

Revision: February 2006 LT-12 2005 Xterra
HEADLAMP (FOR USA)

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

Lighting, turn, wiper OFF
ON
36 LG Combination switch output 1 Wiper dial position 4
C

SKIA5292E

38 W/R Ignition switch (ON) ON -- Battery voltage D
39 L CAN-H -- -- --
40 P CAN-L -- -- --
E
67 B Ground ON -- 0V
70 W Battery power supply (fusible link) OFF -- Battery voltage

Terminals and Reference Values for IPDM E/R EKS00EIK
F

Measuring condition
Terminal Wire Reference value
Signal name Ignition G
No. color Operation or condition (Approx.)
switch
38 B Ground ON -- 0V
39 L CAN-H -- -- -- H
40 P CAN-L -- -- --

Lighting switch OFF 0V
52 P Headlamp low (LH) ON
2ND position
I
ON Battery voltage

Lighting switch OFF 0V
54 R Headlamp low (RH) ON
2ND position ON Battery voltage J
Lighting switch OFF 0V
55 G Headlamp high (LH) ON HIGH or PASS
position ON Battery voltage
LT
Lighting switch OFF 0V
56 L Headlamp high (RH) ON HIGH or PASS
position ON Battery voltage
L
59 B Ground ON -- 0V

How to Proceed With Trouble Diagnosis EKS00EIL

1. Confirm the symptom or customer complaint. M
2. Understand operation description and function description. Refer to LT-5, "System Description" .
3. Perform the Preliminary Check. Refer to LT-14, "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: February 2006 LT-13 2005 Xterra
HEADLAMP (FOR USA)

Preliminary Check EKS00EIM

CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES OR FUSIBLE LINK
Check for blown fuses or fusible link.
Unit Power source Fuse and fusible link No.
Battery g
BCM
Ignition switch ON or START position 1
34
35
IPDM E/R Battery 40
41
53

Refer to LT-8, "Wiring Diagram -- H/LAMP --" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of blown fuse before installing new part.
Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .

2. CHECK POWER SUPPLY CIRCUIT
1. Disconnect BCM connectors.
2. Check voltage between BCM harness connector and ground.

BCM Ignition switch position
(+) (

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