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K ELECTRICAL

SECTION
LIGHTING SYSTEM
LT B

E
CONTENTS
PRECAUTIONS ......................................................... 4 . HEADLAMP BULB ............................................. 27 . F
Precautions for Supplemental Restraint System FRONT TURN SIGNAL/PARKING LAMP BULB 27 ...
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- FRONT SIDE MARKER LAMP BULB ................ 27 .
SIONER" ................................................................. 4
. Removal and Installation ....................................... 27 . G
General precautions for service operations ............ 4 . FRONT COMBINATION LAMP .......................... 27 .
HEADLAMP (FOR USA) ........................................... 5 . Disassembly and Assembly ................................... 29 .
Component Parts and Harness Connector Location 5 ..... HEADLAMP (FOR CANADA) - DAYTIME LIGHT
H
System Description ................................................. 5 . SYSTEM - ................................................................. 30
.
OUTLINE .............................................................. 5
. Component Parts and Harness Connector Location 30 ...
BATTERY SAVER CONTROL ............................. 6 . System Description ................................................ 30 .
VEHICLE SECURITY SYSTEM (PANIC ALARM) 6 ..... OUTLINE ............................................................ 31
. I
CAN Communication System Description ............... 6 . DAYTIME LIGHT OPERATION .......................... 32 .
Schematic ............................................................... 7
. COMBINATION SWITCH READING FUNCTION 32 ...
Wiring Diagram -- H/LAMP -- ................................ 8 . CAN Communication System Description ............. 32 . J
Terminals and Reference Values for BCM ............ 12 . Schematic .............................................................. 33
.
Terminals and Reference Values for IPDM E/R .... 12 . Wiring Diagram -- DTRL -- .................................. 34 .
How to Proceed With Trouble Diagnosis ............... 12 . Terminals and Reference Values for BCM ............. 38 .
LT
Preliminary Check ................................................. 12 . How to Proceed With Trouble Diagnosis ............... 38 .
CHECK POWER SUPPLY AND GROUND CIR- Preliminary Check ................................................. 38 .
CUIT ................................................................... 12
. CHECK BCM CONFIGURATION ....................... 38 .
CONSULT-II Function (BCM) ................................ 12 . INSPECTION FOR POWER SUPPLY AND L
CONSULT-II OPERATION ................................. 12 . GROUND CIRCUIT ............................................ 38 .
WORK SUPPORT .............................................. 13 . INSPECTION PARKING BRAKE SWITCH CIR-
DATA MONITOR ................................................ 13 . CUIT ................................................................... 38
. M
ACTIVE TEST .................................................... 14 . CONSULT-II Functions .......................................... 39 .
SELF-DIAGNOSTIC RESULTS ......................... 15 . Daytime Light Control Does Not Operate Properly
CONSULT-II Function (IPDM E/R) ........................ 15 . (Normal Headlamps Operate Properly) ................. 39 .
CONSULT-II OPERATION ................................. 15 . Aiming Adjustment ................................................. 40 .
DATA MONITOR ................................................ 16 . Bulb Replacement ................................................. 40 .
ACTIVE TEST .................................................... 17 . Removal and Installation ....................................... 40 .
Headlamp HI Does Not Illuminate (Both Sides) .... 17 . Disassembly and Assembly ................................... 40 .
Headlamp HI Does Not Illuminate (One Side) ...... 19 . FRONT FOG LAMP ................................................. 41 .
High Beam Indicator Lamp Does Not Illuminate ... 20 Component Parts and Harness Connector Location 41 ...
Headlamp LO Does Not Illuminate (Both Sides) ... 21 System Description ................................................ 41 .
Headlamp LO Does Not Illuminate (One Side) ..... 23 . OUTLINE ............................................................ 41
.
Headlamps Do Not Turn OFF ............................... 24 . COMBINATION SWITCH READING FUNCTION 42 ...
Aiming Adjustment ................................................ 25 . EXTERIOR LAMP BATTERY SAVER CONTROL 42 ...
LOW BEAM AND HIGH BEAM .......................... 25 . CAN Communication System Description ............. 42 .
HEADLAMP AIMING .......................................... 26 . Wiring Diagram -- F/FOG -- ................................. 43 .
Bulb Replacement ................................................. 27 . Terminals and Reference Values for BCM ............. 45 .

Revision: September 2005 LT-1 2006 Xterra
Terminals and Reference Values for IPDM E/R ..... 45 . CONSULT-II OPERATION ..................................67 .
How to Proceed With Trouble Diagnosis ............... 45 . DATA MONITOR .................................................68 .
Preliminary Check ................................................. 45 . Combination Switch Inspection ..............................69 .
CHECK POWER SUPPLY AND GROUND CIR- Removal and Installation ........................................72 .
CUIT ................................................................... 45
. Switch Circuit Inspection ........................................72 .
CONSULT-II Functions .......................................... 45 . STOP LAMP .............................................................73.
Front Fog Lamps Do Not Illuminate (Both Sides) ... 45 System Description ................................................73 .
Front Fog Lamp Does Not Illuminate (One Side) ... 46 Wiring Diagram -- STOP/L -- ...............................74 .
Aiming Adjustment ................................................. 47 . Bulb Replacement ..................................................76 .
Bulb Replacement ................................................. 48 . HIGH-MOUNTED STOP LAMP ..........................76 .
REMOVAL .......................................................... 48. STOP LAMP .......................................................76 .
INSTALLATION ................................................... 48 . Removal and Installation ........................................76 .
Removal and Installation ....................................... 48 . HIGH-MOUNTED STOP LAMP ..........................76 .
REMOVAL .......................................................... 48. STOP LAMP .......................................................76 .
INSTALLATION ................................................... 48 . BACK-UP LAMP ......................................................77 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 49 Wiring Diagram -- BACK/L -- ...............................77 .
Component Parts and Harness Connector Location 49 ... Bulb Replacement ..................................................79 .
System Description ................................................ 49 . Removal and Installation ........................................79 .
OUTLINE ............................................................ 49
. PARKING, LICENSE PLATE AND TAIL LAMPS .....80 .
TURN SIGNAL OPERATION .............................. 49 . Component Parts and Harness Connector Location ...80
HAZARD LAMP OPERATION ............................ 50 . System Description ................................................80 .
REMOTE KEYLESS ENTRY SYSTEM OPERA- OPERATION BY LIGHTING SWITCH ................80 .
TION ................................................................... 50
. COMBINATION SWITCH READING FUNCTION ...81
COMBINATION SWITCH READING FUNCTION 51 ... EXTERIOR LAMP BATTERY SAVER CONTROL ...81
CAN Communication System Description ............. 51 . CAN Communication System Description .............81 .
Schematic .............................................................. 52
. Schematic ..............................................................82
.
Wiring Diagram -- TURN -- .................................. 53 . Wiring Diagram -- TAIL/L -- ..................................83 .
Terminals and Reference Values for BCM ............. 56 . Terminals and Reference Values for BCM .............87 .
How to Proceed With Trouble Diagnosis ............... 56 . Terminals and Reference Values for IPDM E/R .....87 .
Preliminary Check ................................................. 56 . How to Proceed With Trouble Diagnosis ...............87 .
CHECK POWER SUPPLY AND GROUND CIR- Preliminary Check ..................................................87 .
CUIT ................................................................... 56
. CHECK POWER SUPPLY AND GROUND CIR-
CONSULT-II Function (BCM) ................................. 56 . CUIT ....................................................................87
.
CONSULT-II OPERATION .................................. 56 . CONSULT-II Functions ..........................................87 .
DATA MONITOR ................................................. 57 . Parking, Side Marker, License Plate and/or Tail
ACTIVE TEST .................................................... 58 . Lamps Do Not Illuminate ........................................87 .
Turn Signal Lamp Does Not Operate .................... 58 . Parking, Side Marker, License Plate and Tail Lamps
Rear Turn Signal Lamp Does Not Operate ............ 59 . Do Not Turn OFF (After Approx. 10 Minutes) ........94 .
Hazard Warning Lamp Does Not Operate But Turn Bulb Replacement ..................................................94 .
Signal Lamps Operate ........................................... 60 . FRONT PARKING LAMP ....................................94 .
Turn Signal Indicator Lamp Does Not Operate ...... 62 . LICENSE PLATE LAMP ......................................94 .
Bulb Replacement ................................................. 63 . TAIL LAMP ..........................................................94.
FRONT TURN SIGNAL LAMP ........................... 63 . Removal and Installation ........................................94 .
REAR TURN SIGNAL LAMP .............................. 63 . FRONT PARKING LAMP ....................................94 .
Removal and Installation ....................................... 63 . LICENSE PLATE LAMP ......................................94 .
FRONT TURN SIGNAL LAMP ........................... 63 . TAIL LAMP ..........................................................94.
REAR TURN SIGNAL LAMP .............................. 63 . REAR COMBINATION LAMP ..................................95 .
LIGHTING AND TURN SIGNAL SWITCH ............... 64 . Bulb Replacement ..................................................95 .
Removal and Installation ....................................... 64 . REMOVAL ...........................................................95 .
REMOVAL .......................................................... 64. INSTALLATION ...................................................95 .
INSTALLATION ................................................... 64 . Removal and Installation ........................................95 .
HAZARD SWITCH ................................................... 65 . REMOVAL ...........................................................95 .
Removal and Installation ....................................... 65 . INSTALLATION ...................................................95 .
REMOVAL .......................................................... 65. TRAILER TOW .........................................................96 .
INSTALLATION ................................................... 65 . Component Parts and Harness Connector Location ...96
COMBINATION SWITCH ......................................... 66 . System Description ................................................96 .
Wiring Diagram -- COMBSW -- ........................... 66 . TRAILER TAIL LAMP OPERATION ....................97 .
Combination Switch Reading Function .................. 67 . TRAILER STOP, TURN SIGNAL AND HAZARD
CONSULT-II Function (BCM) ................................. 67 . LAMP OPERATION ............................................97 .

Revision: September 2005 LT-2 2006 Xterra
TRAILER POWER SUPPLY OPERATION ......... 97 . erly ....................................................................... 124
.
TRAILER BACK-UP LAMPS OPERATION ........ 98 . Room/Map Lamp Control Does Not Operate ...... 125 . A
Schematic ............................................................. 99
. MODELS WITH POWER DOOR LOCKS ......... 125 .
Wiring Diagram -- T/TOW -- .............................. 100 . Room Lamp 2nd Row Control Does Not Operate. 127
INTERIOR ROOM LAMP ....................................... 105 . All Interior Room Lamps Do Not Operate ............ 128 . B
Component Parts and Harness Connector Location 105 . Ignition Keyhole Illumination Control Does Not
System Description ............................................. 106. Operate ................................................................ 128
.
MODELS WITHOUT POWER DOOR LOCKS . 106 Cargo Lamp Control Does Not Operate With Switch
MODELS WITH POWER DOOR LOCKS ........ 107 . In DOOR Position ................................................ 130 . C
Schematic / With Power Door Locks ....................110 . ILLUMINATION ...................................................... 133 .
Schematic / Without Power Door Locks ...............112 . Component Parts and Harness Connector Location 133 .
Wiring Diagram -- INT/L -- .................................113 . System Description .............................................. 133 . D
WITH POWER DOOR LOCKS .........................113 . ILLUMINATION OPERATION BY LIGHTING
WITHOUT POWER DOOR LOCKS ..................118 . SWITCH ........................................................... 134 .
Terminals and Reference Values for BCM .......... 121 . EXTERIOR LAMP BATTERY SAVER CONTROL 134 . E
How to Proceed With Trouble Diagnosis ............. 121 . CAN Communication System Description ........... 135 .
Preliminary Check ............................................... 121
. Schematic ............................................................ 136 .
INSPECTION FOR POWER SUPPLY AND Wiring Diagram -- ILL -- ..................................... 138 .
GROUND CIRCUIT .......................................... 121 . Removal and Installation ..................................... 146 . F
CONSULT-II Function (BCM) .............................. 121 . ILLUMINATION CONTROL SWITCH ............... 146 .
CONSULT-II OPERATION ............................... 121 . BULB SPECIFICATIONS ....................................... 147 .
WORK SUPPORT ............................................ 122 . Headlamp ............................................................ 147 . G
DATA MONITOR .............................................. 123 . Exterior Lamp ...................................................... 147 .
ACTIVE TEST .................................................. 124. Interior Lamp/Illumination .................................... 147 .
Room/Map Lamp Does Not Turn ON or OFF Prop- H

Revision: September 2005 LT-3 2006 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.

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

HEADLAMP (FOR USA) PFP:26010
A
Component Parts and Harness Connector Location EKS00HML

F
WKIA5019E

1. IPDM E/R 2. BCM 3. Combination switch (lighting switch)
E122, E123, E124 M18, M20 M28
G
(view with lower instrument panel LH removed)
4. Combination meter
M24 H

System Description EKS00EIF

Control of the headlamp system operation is dependent upon the position of the combination switch (lighting I
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
power distribution module engine room) across the CAN communication lines. The CPU (central processing
J
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.
OUTLINE LT
Power is supplied at all times
G to headlamp high relay, located in the IPDM E/R, and
G to headlamp low relay, located in the IPDM E/R, and L
G to ignition 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 M
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
G through grounds E9, E15 and E24.

Revision: September 2005 LT-5 2006 Xterra
HEADLAMP (FOR USA)

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-71,
"PANIC ALARM OPERATION" .
CAN Communication System Description EKS00EIG

Refer to LAN-21, "CAN COMMUNICATION" .

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

Schematic EKS00EIH

WKWA4414E

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

Wiring Diagram -- H/LAMP -- EKS00EII

WKWA4415E

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

WKWA2536E

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

WKWA2537E

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

WKWA4416E

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

Terminals and Reference Values for BCM EKS00HMM

Refer to BCS-12, "Terminals and Reference Values for BCM" .
Terminals and Reference Values for IPDM E/R EKS00HMN

Refer to PG-29, "Terminals and Reference Values for IPDM E/R" .
How to Proceed With Trouble Diagnosis EKS00HMO

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-12, "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.
Preliminary Check EKS00HMP

CHECK POWER SUPPLY AND GROUND CIRCUIT
Refer to BCS-16, "BCM Power Supply and Ground Circuit Check" and PG-31, "IPDM E/R Power/Ground Cir-
cuit Inspection" .
CONSULT-II Function (BCM) EKS00HMQ

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
BCM diagnostic
Diagnostic mode Description
test item
Supports inspections and adjustments. Commands are transmitted to the BCM
WORK SUPPORT for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
Inspection by part
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.

CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.

BBIA0538E

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

2. Touch "START (NISSAN BASED VHCL)".
A

BCIA0029E

D
3. Touch "BCM" on "SELECT SYSTEM" screen.
If "BCM" is not indicated, go to GI-41, "CONSULT-II Data Link
Connector (DLC) Circuit" .
E

G
BCIA0030E

4. Touch "HEAD LAMP" on "SELECT TEST ITEM" screen.
H

LKIA0169E
LT

WORK SUPPORT
Operation Procedure L
1. Touch "HEAD LAMP" on "SELECT TEST ITEM" screen.
2. Touch "WORK SUPPORT" on "SELECT DIAG MODE" screen.
3. Touch item on "SELECT WORK ITEM" screen. M
4. Touch "START".
5. Touch "CHANGE SETT".
6. The setting will be changed and "CUSTOMIZING COMPLETED" will be displayed.
7. Touch "END".
Display Item List
Item Description CONSULT-II Factory setting
Exterior lamp battery saver control mode can be changed ON

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