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K ELECTRICAL

B
SECTION
LIGHTING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 4
. HEADLAMP AIMING .......................................... 23 . F
Precautions for Supplemental Restraint System Bulb Replacement ................................................. 24 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- HEADLAMP BULB ............................................. 24 .
SIONER" ................................................................. 4
. FRONT TURN SIGNAL/PARKING LAMP BULB 24 ... G
General precautions for service operations ............ 4 . FRONT SIDE MARKER LAMP BULB ................ 24 .
HEADLAMP (FOR USA) ........................................... 5 . Removal and Installation ....................................... 24 .
Component Parts and Harness Connector Location 5 ..... FRONT COMBINATION LAMP .......................... 24 .
H
System Description ................................................. 5
. Disassembly and Assembly ................................... 26 .
OUTLINE .............................................................. 5
. HEADLAMP (FOR CANADA) - DAYTIME LIGHT
BATTERY SAVER CONTROL ............................. 6 . SYSTEM - ................................................................. 27
.
VEHICLE SECURITY SYSTEM (PANIC ALARM) 6 ..... Component Parts and Harness Connector Location 27 ... I
CAN Communication System Description ............... 6 . System Description ................................................ 27 .
Schematic ............................................................... 7
. OUTLINE ............................................................ 28
.
Wiring Diagram -- H/LAMP -- ................................ 8 . DAYTIME LIGHT OPERATION .......................... 29 . J
Terminals and Reference Values for BCM ............ 12 . COMBINATION SWITCH READING FUNCTION 29 ...
Terminals and Reference Values for IPDM E/R .... 12 . CAN Communication System Description ............. 29 .
How to Proceed With Trouble Diagnosis ............... 12 . Schematic .............................................................. 30
. LT
Preliminary Check ................................................. 12
. Wiring Diagram -- DTRL -- .................................. 31 .
CHECK POWER SUPPLY AND GROUND CIR- Terminals and Reference Values for BCM ............. 35 .
CUIT FOR BCM ................................................. 12 . How to Proceed With Trouble Diagnosis ............... 35 .
CHECK POWER SUPPLY AND GROUND CIR- Preliminary Check ................................................. 35 . L
CUIT FOR BCM ................................................. 12 . CHECK BCM CONFIGURATION ....................... 35 .
CONSULT-II Function (BCM) ................................ 12 . CHECK POWER SUPPLY AND GROUND CIR-
CONSULT-II START PROCEDURE ................... 12 . CUIT FOR BCM ................................................. 35 . M
WORK SUPPORT .............................................. 12 . INSPECTION PARKING BRAKE SWITCH CIR-
DATA MONITOR ................................................ 12 . CUIT ................................................................... 35
.
ACTIVE TEST .................................................... 13
. CONSULT-II Function for BCM .............................. 36 .
SELF-DIAGNOSTIC RESULTS ......................... 13 . CONSULT-II Function for BCM .............................. 36 .
CONSULT-II Function (IPDM E/R) ........................ 13 . Daytime Light Control Does Not Operate Properly
CONSULT-II START PROCEDURE ................... 13 . (Normal Headlamps Operate Properly) ................. 36 .
DATA MONITOR ................................................ 14 . Aiming Adjustment ................................................. 37 .
ACTIVE TEST .................................................... 14
. Bulb Replacement ................................................. 37 .
Headlamp HI Does Not Illuminate (Both Sides) .... 14 . Removal and Installation ....................................... 37 .
Headlamp HI Does Not Illuminate (One Side) ...... 16 . Disassembly and Assembly ................................... 37 .
High Beam Indicator Lamp Does Not Illuminate ... 17 FRONT FOG LAMP ................................................. 38 .
Headlamp LO Does Not Illuminate (Both Sides) ... 18 Component Parts and Harness Connector Location 38 ...
Headlamp LO Does Not Illuminate (One Side) ..... 20 . System Description ................................................ 38 .
Headlamps Do Not Turn OFF ............................... 21 . OUTLINE ............................................................ 38
.
Aiming Adjustment ................................................ 22
. COMBINATION SWITCH READING FUNCTION 39 ...
LOW BEAM AND HIGH BEAM .......................... 22 . EXTERIOR LAMP BATTERY SAVER CONTROL 39 ...

Revision: September 2006 LT-1 2007 Xterra
CAN Communication System Description ............. 39 . HAZARD SWITCH ....................................................61 .
Wiring Diagram -- F/FOG -- ................................. 40 . Removal and Installation ........................................61 .
Terminals and Reference Values for BCM ............. 42 . REMOVAL ...........................................................61
.
Terminals and Reference Values for IPDM E/R ..... 42 . INSTALLATION ...................................................61 .
How to Proceed With Trouble Diagnosis ............... 42 . COMBINATION SWITCH .........................................62 .
Preliminary Check ................................................. 42 . Wiring Diagram -- COMBSW -- ...........................62 .
CHECK POWER SUPPLY AND GROUND CIR- Combination Switch Reading Function ..................63 .
CUIT FOR BCM .................................................. 42 . CONSULT-II Function (BCM) .................................63 .
CHECK POWER SUPPLY AND GROUND CIR- CONSULT-II START PROCEDURE ....................63 .
CUIT FOR BCM .................................................. 42 . DATA MONITOR .................................................63 .
CONSULT-II Function for BCM .............................. 42 . Combination Switch Inspection ..............................64 .
CONSULT-II Function for BCM .............................. 42 . Removal and Installation ........................................66 .
Front Fog Lamps Do Not Illuminate (Both Sides) ... 42 Switch Circuit Inspection ........................................66 .
Front Fog Lamp Does Not Illuminate (One Side) ... 43 STOP LAMP .............................................................67
.
Aiming Adjustment ................................................. 45 . System Description ................................................67.
Bulb Replacement ................................................. 46 . Wiring Diagram -- STOP/L -- ...............................68 .
REMOVAL .......................................................... 46. Bulb Replacement ..................................................70.
INSTALLATION ................................................... 46 . HIGH-MOUNTED STOP LAMP ..........................70 .
Removal and Installation ....................................... 46 . STOP LAMP .......................................................70.
REMOVAL .......................................................... 46. Removal and Installation ........................................70 .
INSTALLATION ................................................... 46 . HIGH-MOUNTED STOP LAMP ..........................70 .
TURN SIGNAL AND HAZARD WARNING LAMPS... 47 STOP LAMP .......................................................70.
Component Parts and Harness Connector Location 47 ... BACK-UP LAMP ......................................................71 .
System Description ................................................ 47 . Wiring Diagram -- BACK/L -- ...............................71 .
OUTLINE ............................................................ 47
. Bulb Replacement ..................................................73.
TURN SIGNAL OPERATION .............................. 47 . Removal and Installation ........................................73 .
HAZARD LAMP OPERATION ............................ 48 . PARKING, LICENSE PLATE AND TAIL LAMPS .....74 .
REMOTE KEYLESS ENTRY SYSTEM OPERA- Component Parts and Harness Connector Location ...74
TION ................................................................... 48
. System Description ................................................74.
COMBINATION SWITCH READING FUNCTION 49 ... OPERATION BY LIGHTING SWITCH ................74 .
CAN Communication System Description ............. 49 . COMBINATION SWITCH READING FUNCTION ...75
Schematic .............................................................. 50
. EXTERIOR LAMP BATTERY SAVER CONTROL ...75
Wiring Diagram -- TURN -- .................................. 51 . CAN Communication System Description .............75 .
Terminals and Reference Values for BCM ............. 54 . Schematic ..............................................................76
.
How to Proceed With Trouble Diagnosis ............... 54 . Wiring Diagram -- TAIL/L -- ..................................77 .
Preliminary Check ................................................. 54 . Terminals and Reference Values for BCM .............81 .
CHECK POWER SUPPLY AND GROUND CIR- Terminals and Reference Values for IPDM E/R .....81 .
CUIT FOR BCM .................................................. 54 . How to Proceed With Trouble Diagnosis ...............81 .
CONSULT-II Function (BCM) ................................. 54 . Preliminary Check ..................................................81
.
CONSULT-II START PROCEDURE ................... 54 . CHECK POWER SUPPLY AND GROUND CIR-
DATA MONITOR ................................................. 54 . CUIT FOR BCM ..................................................81 .
ACTIVE TEST .................................................... 54 . CHECK POWER SUPPLY AND GROUND CIR-
Turn Signal Lamps Do Not Operate ...................... 54 . CUIT FOR BCM ..................................................81 .
Front Turn Signal Lamp Does Not Operate ........... 55 . CONSULT-II Function for BCM ..............................81 .
Rear Turn Signal Lamp Does Not Operate ............ 55 . CONSULT-II Function for BCM ..............................81 .
Hazard Warning Lamp Does Not Operate But Turn Parking, Side Marker, License Plate and/or Tail
Signal Lamps Operate ........................................... 56 . Lamps Do Not Illuminate ........................................81 .
Turn Signal Indicator Lamp Does Not Operate ...... 58 . Parking, Side Marker, License Plate and Tail Lamps
Bulb Replacement ................................................. 59 . Do Not Turn OFF (After Approx. 10 Minutes) ........88 .
FRONT TURN SIGNAL LAMP ........................... 59 . Bulb Replacement ..................................................88.
REAR TURN SIGNAL LAMP .............................. 59 . FRONT PARKING LAMP ....................................88 .
Removal and Installation ....................................... 59 . LICENSE PLATE LAMP ......................................88 .
FRONT TURN SIGNAL LAMP ........................... 59 . TAIL LAMP ..........................................................88
.
REAR TURN SIGNAL LAMP .............................. 59 . Removal and Installation ........................................88 .
LIGHTING AND TURN SIGNAL SWITCH ............... 60 . FRONT PARKING LAMP ....................................88 .
Removal and Installation ....................................... 60 . LICENSE PLATE LAMP ......................................88 .
REMOVAL .......................................................... 60. TAIL LAMP ..........................................................88
.
INSTALLATION ................................................... 60 . REAR COMBINATION LAMP ..................................89 .
Bulb Replacement ..................................................89.

Revision: September 2006 LT-2 2007 Xterra
REMOVAL .......................................................... 89
. CONSULT-II Function (BCM) .............................. 115 .
INSTALLATION .................................................. 89. CONSULT-II START PROCEDURE ................. 115 . A
Removal and Installation ....................................... 89 . WORK SUPPORT ............................................ 115 .
REMOVAL .......................................................... 89
. DATA MONITOR .............................................. 115 .
INSTALLATION .................................................. 89. ACTIVE TEST .................................................. 116 . B
TRAILER TOW ........................................................ 90
. Room/Map Lamp Does Not Turn ON or OFF Prop-
Component Parts and Harness Connector Location 90 ... erly ....................................................................... 116
.
System Description ............................................... 90
. Room/Map Lamp Control Does Not Operate ...... 117 .
TRAILER TAIL LAMP OPERATION ................... 91 . MODELS WITH POWER DOOR LOCKS ......... 117 . C
TRAILER STOP, TURN SIGNAL AND HAZARD Room Lamp 2nd Row Control Does Not Operate. 119
LAMP OPERATION ........................................... 91 . All Interior Room Lamps Do Not Operate ............ 120 .
TRAILER POWER SUPPLY OPERATION ......... 91 . Ignition Keyhole Illumination Control Does Not D
TRAILER BACK-UP LAMPS OPERATION ........ 92 . Operate ................................................................ 120
.
Schematic ............................................................. 93
. Cargo Lamp Control Does Not Operate With Switch
Wiring Diagram -- T/TOW -- ................................ 94 . In DOOR Position ................................................ 122 . E
INTERIOR ROOM LAMP ......................................... 99 . ILLUMINATION ...................................................... 125 .
Component Parts and Harness Connector Location 99 ... Component Parts and Harness Connector Location 125 .
System Description ............................................. 100. System Description .............................................. 125 .
MODELS WITHOUT POWER DOOR LOCKS . 100 ILLUMINATION OPERATION BY LIGHTING F
MODELS WITH POWER DOOR LOCKS ........ 101 . SWITCH ........................................................... 126 .
Schematic -- With Power Door Locks ................ 104 . EXTERIOR LAMP BATTERY SAVER CONTROL 126 .
Schematic -- Without Power Door Locks ........... 106 . CAN Communication System Description ........... 127 . G
Wiring Diagram -- INT/L -- ................................ 107 . Schematic ............................................................ 128 .
WITH POWER DOOR LOCKS ........................ 107 . Wiring Diagram -- ILL -- ..................................... 130 .
WITHOUT POWER DOOR LOCKS ..................112 . Removal and Installation ..................................... 138 . H
Terminals and Reference Values for BCM ...........115 . ILLUMINATION CONTROL SWITCH ............... 138 .
How to Proceed With Trouble Diagnosis ..............115 . BULB SPECIFICATIONS ....................................... 139 .
Preliminary Check ................................................115
. Headlamp ............................................................ 139 .
I
INSPECTION FOR POWER SUPPLY AND Exterior Lamp ...................................................... 139 .
GROUND CIRCUIT FOR BCM .........................115 . Interior Lamp/Illumination .................................... 139 .

Revision: September 2006 LT-3 2007 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:
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 EKS00EIC

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

Revision: September 2006 LT-4 2007 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
unit) of the IPDM E/R controls the headlamp high and headlamp low relay coils. When energized, these relays J
direct power to the respective headlamps, which then illuminate.
OUTLINE LT
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, L
q to ignition relay, located in the IPDM E/R,
q through 20A fuse (No. 53, located in the IPDM E/R)
q to CPU of the IPDM E/R, and M
q through 50A fusible link (letter g , located in the fuse and fusible link box)
q to BCM terminal 70.
With the ignition switch in the ON or START position, power is supplied
q to ignition relay, located in the IPDM E/R, and
q through 10A fuse [No. 1, located in the fuse block (J/B)]
q to BCM terminal 38.
Ground is supplied
q to BCM terminal 67
q through grounds M57, M61 and M79, and
q to IPDM E/R terminals 38 and 59
q through grounds E9, E15 and E24.

Revision: September 2006 LT-5 2007 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
q through 15A fuse (No. 41, located in the IPDM E/R)
q through IPDM E/R terminal 54
q to front combination lamp RH (headlamp) terminal 3, and
q through 15A fuse (No. 40, located in the IPDM E/R)
q through IPDM E/R terminal 52
q to front combination lamp LH (headlamp) terminal 3.
Ground is supplied
q to front combination lamp LH and RH (headlamp) terminal 2
q 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
q through 10A fuse (No. 34, located in the IPDM E/R)
q through IPDM E/R terminal 56
q to front combination lamp RH (headlamp) terminal 1, and
q through 10A fuse (No. 35, located in the IPDM E/R)
q through IPDM E/R terminal 55
q to front combination lamp LH (headlamp) terminal 1.
Ground is supplied
q to front combination lamp LH and RH (headlamp) terminal 2
q 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-44,
"Panic Alarm Operation" .
CAN Communication System Description EKS00EIG

Refer to LAN-4, "CAN Communication System" .

Revision: September 2006 LT-6 2007 Xterra
HEADLAMP (FOR USA)

Schematic EKS00EIH

WKWA5462E

Revision: September 2006 LT-7 2007 Xterra
HEADLAMP (FOR USA)

Wiring Diagram -- H/LAMP -- EKS00EII

WKWA5326E

Revision: September 2006 LT-8 2007 Xterra
HEADLAMP (FOR USA)

WKWA2536E

Revision: September 2006 LT-9 2007 Xterra
HEADLAMP (FOR USA)

WKWA2537E

Revision: September 2006 LT-10 2007 Xterra
HEADLAMP (FOR USA)

WKWA4416E

Revision: September 2006 LT-11 2007 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-27, "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 FOR BCM
Refer to BCS-16, "BCM Power Supply and Ground Circuit Check" .
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR IPDM E/R
Refer to PG-29, "IPDM E/R Power/Ground Circuit 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 START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
WORK SUPPORT
Display Item List
Item Description CONSULT-II Factory setting
Exterior lamp battery saver control mode can be changed ON

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