Check.........................................................................28
Replacement..............................................................29

STEERING SWITCH......................................................30

Check.........................................................................30

HEADLAMP (FOR USA) - XENON TYPE - ..................31

Component Parts and Harness Connector
Location .....................................................................31
System Description....................................................31
Schematic ..................................................................35
Wiring Diagram - H/LAMP -.......................................36
Trouble Diagnoses.....................................................40
Bulb Replacement/Xenon Type .................................43
Aiming Adjustment .....................................................44

HEADLAMP (FOR CANADA) - DAYTIME LIGHT
SYSTEM - ......................................................................46

Component Parts and Harness Connector
Location .....................................................................46
System Description....................................................46
Schematic ..................................................................50
Wiring Diagram - DTRL -...........................................51
Trouble Diagnoses.....................................................56
Bulb Replacement .....................................................57
Aiming Adjustment .....................................................58

HEADLAMP - HEADLAMP AIMING CONTROL -........59

System Description....................................................59
Wiring Diagram - H/AIM - ..........................................60

PARKING, LICENSE AND TAIL LAMPS .....................61

System Description....................................................61
Schematic ..................................................................62
Wiring Diagram - TAIL/L -..........................................63
Trouble Diagnoses.....................................................66

STOP LAMP ..................................................................67

Wiring Diagram - STOP/L - .......................................67

BACK-UP LAMP............................................................69

Wiring Diagram - BACK/L - .......................................69

FRONT FOG LAMP.......................................................70

System Description....................................................70
Wiring Diagram - F/FOG - .........................................72
Aiming Adjustment .....................................................74

TURN SIGNAL AND HAZARD WARNING LAMPS .....75

System Description....................................................75
Wiring Diagram - TURN - ..........................................77
Trouble Diagnoses.....................................................79
Electrical Components Inspection .............................79

ILLUMINATION..............................................................80

System Description....................................................80
Schematic ..................................................................82
Wiring Diagram - ILL - ...............................................83

INTERIOR, SPOT, VANITY MIRROR AND
LUGGAGE ROOM LAMPS ...........................................88

System Description....................................................88
Schematic ..................................................................90
Wiring Diagram - INT/L - ...........................................91

METERS AND GAUGES...............................................94

Component Parts and Harness Connector
Location .....................................................................94
System Description....................................................94
Combination Meter ....................................................96
Schematic ..................................................................98
Wiring Diagram - METER - .......................................99
Meter/Gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode ........................100
Trouble Diagnoses...................................................101

IDX

Electrical Components Inspection ...........................108

COMPASS AND THERMOMETER ............................. 110

System Description.................................................. 110
Wiring Diagram - COMPAS -................................... 111
Trouble Diagnoses................................................... 112
Calibration Procedure for Compass ........................ 113

WARNING LAMPS ...................................................... 114

Schematic ................................................................ 114
Wiring Diagram - WARN - ....................................... 115
Fuel Warning Lamp Sensor Check .........................122
Electrical Components Inspection ...........................122

A/T INDICATOR...........................................................123

Wiring Diagram - AT/IND -.......................................123

WARNING CHIME .......................................................125

Component Parts and Harness Connector
Location ...................................................................125
System Description..................................................125
Wiring Diagram - CHIME - ......................................127
Trouble Diagnoses...................................................129

FRONT WIPER AND WASHER ..................................136

System Description..................................................136
Wiring Diagram - WIPER - ......................................138
Removal and Installation .........................................139
Washer Nozzle Adjustment .....................................140
Washer Tube Layout ...............................................140

REAR WIPER AND WASHER ....................................141

System Description..................................................141
Wiring Diagram - WIP/R -........................................143
Trouble Diagnoses...................................................145
Removal and Installation .........................................145
Washer Nozzle Adjustment .....................................146
Washer Tube Layout ...............................................146
Check Valve.............................................................146

HORN ...........................................................................147

Wiring Diagram - HORN - .......................................147

CIGARETTE LIGHTER................................................148

Wiring Diagram - CIGAR -.......................................148

CLOCK.........................................................................150

Wiring Diagram - CLOCK -......................................150

REAR WINDOW DEFOGGER.....................................151

Component Parts and Harness Connector
Location ...................................................................151
System Description..................................................151
Wiring Diagram - DEF -...........................................153
Trouble Diagnoses...................................................155
Electrical Components Inspection ...........................157
Filament Check........................................................157
Filament Repair .......................................................158

AUDIO ..........................................................................160

System Description..................................................160
Schematic ................................................................161
Wiring Diagram - AUDIO -.......................................162

Trouble Diagnoses...................................................166
Inspection.................................................................167
Wiring Diagram - REMOTE -...................................168

AUDIO ANTENNA .......................................................169

System Description..................................................169
Wiring Diagram - P/ANT - .......................................170
Trouble Diagnoses...................................................171
Location of Antenna.................................................171
Antenna Rod Replacement .....................................171

POWER SUNROOF.....................................................173

System Description..................................................173
Wiring Diagram - SROOF - .....................................174
Trouble Diagnoses...................................................176

DOOR MIRROR ...........................................................177

Wiring Diagram - MIRROR - ...................................177

GLASS HATCH OPENER ...........................................178

System Description..................................................178
Wiring Diagram - TLID - ..........................................179

FUEL FILLER LID OPENER .......................................180

Wiring Diagram - F/LID - .........................................180

POWER SEAT .............................................................181

Wiring Diagram - SEAT - .........................................181

HEATED SEAT ............................................................183

Wiring Diagram - HSEAT - ......................................183
Seatback Heating Unit.............................................185

AUTOMATIC DRIVE POSITIONER ............................186

Component Parts and Harness Connector
Location ...................................................................186
System Description..................................................187
Schematic ................................................................190
Wiring Diagram - AUT/DP - .....................................191
On Board Diagnosis ................................................196
Trouble Diagnoses...................................................198

AUTOMATIC SPEED CONTROL DEVICE (ASCD) ...221

Component Parts and Harness Connector
Location ...................................................................221
System Description..................................................222
Schematic ................................................................224
Wiring Diagram - ASCD - ........................................225
Fail-safe System ......................................................229
Trouble Diagnoses...................................................230
Electrical Component Inspection .............................239
ASCD Wire Adjustment ...........................................240

POWER WINDOW .......................................................241

System Description..................................................241
Schematic ................................................................244
Wiring Diagram - WINDOW - ..................................245
Trouble Diagnoses...................................................250

POWER DOOR LOCK.................................................254

Component Parts and Harness Connector
Location ...................................................................254
System Description..................................................254

CONTENTS

(Cont’d)

EL-2

Schematic ................................................................255
Wiring Diagram - D/LOCK -.....................................256
Trouble Diagnoses...................................................261

MULTI-REMOTE CONTROL SYSTEM .......................270

Component Parts and Harness Connector
Location ...................................................................270
System Description..................................................270
Schematic ................................................................273
Wiring Diagram - MULTI - .......................................274
Trouble Diagnoses...................................................277
ID Code Entry Procedure ........................................289
Remote Controller Battery Replacement.................293

THEFT WARNING SYSTEM .......................................294

Component Parts and Harness Connector
Location ...................................................................294
System Description..................................................295
Schematic ................................................................298
Wiring Diagram - THEFT -.......................................300
Trouble Diagnoses...................................................306

SMART ENTRANCE CONTROL UNIT .......................319

Description ...............................................................319
Schematic ................................................................322
Smart Entrance Control Unit Inspection Table ........324

INTEGRATED HOMELINK TRANSMITTER ...............325

Wiring Diagram - TRNSMT - ...................................325
Trouble Diagnoses...................................................326

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM -
NATS)...........................................................................328

Component Parts and Harness Connetor
Location ...................................................................328
System Description..................................................329
System Composition................................................329
Wiring Diagram - NATS -.........................................330
CONSULT-II .............................................................331
Trouble Diagnoses...................................................334
How to Replace IVIS (NATS) IMMU .......................347

INFINITI COMMUNICATOR (IVCS) ............................348

Precaution................................................................348
Communicator Response Center Telephone
Number for Technicians...........................................348
Component Parts and Harness Connector
Location ...................................................................349

System Description..................................................350
Schematic ................................................................358
Wiring Diagram - IVCS -..........................................359
CONSULT-II .............................................................363
Trouble Diagnoses...................................................368
Trouble Diagnoses for Intermittent Incident ............377
Demonstration Mode ...............................................379
System Setting (When IVCS Unit is Replaced) ......381

NAVIGATION SYSTEM ...............................................385

Component Parts Location ......................................385
System Description..................................................386
Schematic ................................................................393
Wiring Diagram - NAVI -..........................................394
Self-diagnosis Mode ................................................397
Confirmation/Adjustment Mode ...............................400
Setting Mode............................................................410
Trouble diagnoses ...................................................417
This Condition is Not Abnormal...............................423
Program Loading .....................................................432
Initialization ..............................................................433

ELECTRICAL UNITS LOCATION...............................436

Engine Compartment...............................................436
Passenger Compartment.........................................438

HARNESS LAYOUT ....................................................440

How to Read Harness Layout .................................440
Outline......................................................................441
Main Harness...........................................................442
Engine Room Harness ............................................444
Engine Control Harness ..........................................446
Body Harness LH ....................................................448
Body Harness RH....................................................449
Back Door Harness .................................................450
Engine and Transmission Harness..........................451
Room Lamp Harness...............................................452
Air Bag Harness ......................................................453
Front Door Harness .................................................454
Rear Door Harness..................................................455

BULB SPECIFICATIONS ............................................456

Headlamp.................................................................456
Exterior Lamp ..........................................................456
Interior Lamp............................................................456

WIRING DIAGRAM CODES (CELL CODES).............457

IDX

CONTENTS

(Cont’d)

EL-3

Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”

NBEL0001

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to INFINITI QX4 is as follows:

For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt
pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.

For a side collision
The Supplemental Restraint System consists of side air bag module (located in the outer side of front seat),
satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision), wiring harness,
warning lamp (one of components of air bags for a frontal collision).

Information necessary to service the system safely is included in the RS section of this Service Manual.

WARNING:

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 performed
by an authorized INFINITI dealer.

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 RS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.

Wiring Diagrams and Trouble Diagnosis

NBEL0002

When you read wiring diagrams, refer to the following:

GI-11, “HOW TO READ WIRING DIAGRAMS”

EL-9, “POWER SUPPLY ROUTING” for power distribution circuit

When you perform trouble diagnosis, refer to the following:

GI-35, “HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES”

GI-24, “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT”

Check for any Service bulletins before servicing the vehicle.

PRECAUTIONS

Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

EL-4

Content .. 294 295 296 297 ..