Infiniti Q45 (FY33). Manual — part 253
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CONSULT-II . . . . . . . . . . . . . . . .210
Trouble Diagnoses. . . . . . . . . . . . ... 211
Filament Check. . . . . . . . . . . . . . 214
Filament Repair . . . . . . . . . . . . . ...215
AUDIO . . . . . . . . . . . . . . . . . . ..216
System Description. . . . . . . . . . . . ..216
Schematic . . . . . . . . . . . . . . . . 217
Wiring Diagram - AUDIO -. . . . . . . . . ...218
Trouble Diagnoses. . . . . . . . . . . . ...225
Wiring Diagram - REMOTE -. . . . . . . . ...227
AUDIO ANTENNA . . . . . . . . . . . . . ...228
System Description. . . . . . . . . . . . ..228
Wiring Diagram - P/ANT - . . . . . . . . . ...229
Trouble Diagnoses. . . . . . . . . . . . ...230
Location of Antenna. . . . . . . . . . . . .230
Antenna Rod Replacement . . . . . . . . . .230
Window Antenna Repair . . . . . . . . . . ..231
TELEPHONE (Pre wire). . . . . . . . . . . ..232
Wiring Diagram - PHONE - . . . . . . . . . .232
TRUNK LID AND FUEL FILLER LID OPENER . . .234
Wiring Diagram - T&FLID -. . . . . . . . . ..234
TRUNK CLOSURE . . . . . . . . . . . . . ..236
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...236
System Description. . . . . . . . . . . . ..236
Wiring Diagram - T/CLOS - . . . . . . . . . .237
Trouble Diagnosis . . . . . . . . . . . . . 239
ELECTRIC SUNROOF . . . . . . . . . . . . 242
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...242
System Description. . . . . . . . . . . . ..242
Wiring Diagram - SROOF - . . . . . . . . . .243
CONSULT-II . . . . . . . . . . . . . . . .245
Trouble Diagnoses. . . . . . . . . . . . ...246
DOOR MIRROR . . . . . . . . . . . . . . ...247
Wiring Diagram - MIRROR - . . . . . . . . ...247
AUTO ANTI-DAZZLING INSIDE MIRROR. . . . ..248
Wiring Diagram - I/MIRR -. . . . . . . . . ...248
POWER SEAT (Passenger side) . . . . . . . ...249
Schematic . . . . . . . . . . . . . . . . 249
Wiring Diagram - SEAT - . . . . . . . . . . .250
HEATED SEAT . . . . . . . . . . . . . . . 254
Wiring Diagram - HSEAT - . . . . . . . . . ..254
REAR SUNSHADE . . . . . . . . . . . . . ..256
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...256
System Description. . . . . . . . . . . . ..257
Wiring Diagram - SHADE -. . . . . . . . . ..258
Trouble Diagnoses. . . . . . . . . . . . ...260
AUTOMATIC SPEED CONTROL DEVICE (ASCD). 262
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...262
System Description. . . . . . . . . . . . ..263
Schematic . . . . . . . . . . . . . . . . 265
Wiring Diagram - ASCD - . . . . . . . . . . 266
CONSULT-II . . . . . . . . . . . . . . . .271
Fail-safe System Description. . . . . . . . ...273
Fail-safe System Check. . . . . . . . . . ...274
Trouble Diagnoses. . . . . . . . . . . . ...275
Electrical Components Inspection . . . . . . ...283
ASCD Wire Adjustment . . . . . . . . . . ...284
IVMS (LAN). . . . . . . . . . . . . . . . ..285
Overall Description . . . . . . . . . . . . ..285
Component Parts Location . . . . . . . . . ..286
System Diagram . . . . . . . . . . . . . ..287
Sleep/Wake-up Control. . . . . . . . . . . 288
Fail-safe System . . . . . . . . . . . . . ..288
CONSULT-II . . . . . . . . . . . . . . . .289
On board Diagnosis. . . . . . . . . . . . .296
On board Diagnosis - Mode I (IVMS
communication diagnosis) . . . . . . . . . ...297
On board Diagnosis - Mode II (Switch monitor). ..299
Schematic . . . . . . . . . . . . . . . . 301
Wiring Diagram - COMM -. . . . . . . . . ...302
Trouble Diagnoses. . . . . . . . . . . . ...306
BCM (Body Control Module) . . . . . . . . . .310
Schematic . . . . . . . . . . . . . . . . 310
LOCAL CONTROL UNITS (LCUs) . . . . . . . .312
Schematic . . . . . . . . . . . . . . . . 312
POWER WINDOW - IVMS. . . . . . . . . . ...316
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...316
System Description. . . . . . . . . . . . ..317
Schematic . . . . . . . . . . . . . . . . 318
Wiring Diagram - WINDOW - . . . . . . . . ..319
CONSULT-II . . . . . . . . . . . . . . . .323
Trouble Diagnoses. . . . . . . . . . . . ...324
POWER DOOR LOCK - IVMS . . . . . . . . . 332
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...332
System Description. . . . . . . . . . . . ..333
Schematic . . . . . . . . . . . . . . . . 334
Wiring Diagram - D/LOCK -. . . . . . . . . .335
CONSULT-II . . . . . . . . . . . . . . . .339
On board Diagnosis - Mode III (Power door lock
operation). . . . . . . . . . . . . . . . .342
Trouble Diagnoses. . . . . . . . . . . . ...344
MULTI-REMOTE CONTROL SYSTEM - IVMS . . ...353
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...353
System Description. . . . . . . . . . . . ..354
Schematic . . . . . . . . . . . . . . . . 356
Wiring Diagram - MULTI - . . . . . . . . . ...357
CONSULT-II . . . . . . . . . . . . . . . .363
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CONTENTS
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Trouble Diagnoses. . . . . . . . . . . . ...364
Electrical Components Inspection . . . . . . ...373
ID Code Entry Procedure . . . . . . . . . . 374
INTERIOR ILLUMINATION CONTROL - IVMS . . ..377
System Description. . . . . . . . . . . . ..377
Schematic . . . . . . . . . . . . . . . . 381
Wiring Diagram - ROOM/L - . . . . . . . . . 382
CONSULT-II . . . . . . . . . . . . . . . .389
Trouble Diagnoses. . . . . . . . . . . . ...390
STEP LAMP - IVMS . . . . . . . . . . . . . 399
Component Parts and Harness Connector
Locations. . . . . . . . . . . . . . . . ..399
System Description. . . . . . . . . . . . ..400
Schematic . . . . . . . . . . . . . . . . 401
Wiring Diagram - STEP/L -. . . . . . . . . ..402
CONSULT-II . . . . . . . . . . . . . . . .407
Trouble Diagnoses. . . . . . . . . . . . ...408
REAR POWER WINDOW SWITCH ILLUMINATION
- IVMS . . . . . . . . . . . . . . . . . . ..410
System Description. . . . . . . . . . . . ..410
Wiring Diagram - SW/ILL - . . . . . . . . . .. 411
CONSULT-II . . . . . . . . . . . . . . . .413
Trouble Diagnoses. . . . . . . . . . . . ...414
VEHICLE SECURITY (THEFT WARNING)
SYSTEM - IVMS . . . . . . . . . . . . . . ..415
Component Parts Harness Connector Location. ..415
System Description. . . . . . . . . . . . ..416
Schematic . . . . . . . . . . . . . . . . 418
Wiring Diagram - VEHSEC - . . . . . . . . ...419
CONSULT-II . . . . . . . . . . . . . . . .427
Trouble Diagnoses. . . . . . . . . . . . ...428
AUTOMATIC DRIVE POSITIONER - IVMS . . . . 441
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...441
System Description. . . . . . . . . . . . ..442
Schematic . . . . . . . . . . . . . . . . 446
Wiring Diagram - AUT/DP - . . . . . . . . . .447
CONSULT-II . . . . . . . . . . . . . . . .454
On board Diagnosis - Mode IV (Automatic drive
positioner operation) . . . . . . . . . . . . 458
Trouble Diagnoses. . . . . . . . . . . . ...460
IVIS (Infiniti Vehicle Immobilizer System - NATS) ..486
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...486
System Description. . . . . . . . . . . . ..487
System Composition. . . . . . . . . . . . 487
Wiring Diagram - NATS -. . . . . . . . . . .488
CONSULT-II . . . . . . . . . . . . . . . .489
Trouble Diagnoses. . . . . . . . . . . . ...491
How to Replace IVIS (NATS) Antenna Amp. . . ..503
INTEGRATED HOMELINK TRANSMITTER . . . ...504
Wiring Diagram - TRNSMT - . . . . . . . . ...504
Trouble Diagnoses. . . . . . . . . . . . ...505
INFINITI COMMUNICATOR (IVCS). . . . . . . .506
Precaution. . . . . . . . . . . . . . . . 506
Communicator Response Center Telephone
Number for Technicians. . . . . . . . . . ...506
Component Parts and Harness Connector
Location . . . . . . . . . . . . . . . . ...507
System Description. . . . . . . . . . . . ..508
Schematic . . . . . . . . . . . . . . . . 514
Wiring Diagram - IVCS -. . . . . . . . . . ..515
CONSULT-II . . . . . . . . . . . . . . . .519
Trouble Diagnoses. . . . . . . . . . . . ...523
Trouble Diagnoses for Intermittent Incident . . . 533
Demonstration Mode . . . . . . . . . . . ...534
System Setting (When IVCS unit is replaced) . . 536
NAVIGATION SYSTEM . . . . . . . . . . . ...540
Precautions . . . . . . . . . . . . . . . ..540
System Description. . . . . . . . . . . . ..541
Schematic . . . . . . . . . . . . . . . . 548
Wiring Diagram - NAVI -. . . . . . . . . . ..549
Self-diagnosis Mode . . . . . . . . . . . . 553
Setting Mode. . . . . . . . . . . . . . . 565
Trouble Diagnoses. . . . . . . . . . . . ...573
This Condition Is Not Abnormal. . . . . . . ...578
Program Loading . . . . . . . . . . . . . .586
Initialize Location . . . . . . . . . . . . . .587
LOCATION OF ELECTRICAL UNITS . . . . . . .590
Engine Compartment. . . . . . . . . . . ...590
Luggage Compartment . . . . . . . . . . . 591
Passenger Compartment. . . . . . . . . . .592
HARNESS LAYOUT . . . . . . . . . . . . . 594
Outline. . . . . . . . . . . . . . . . . ..594
How to Read Harness Layout . . . . . . . . .595
Engine Room Harness . . . . . . . . . . . 596
Instrument Harness . . . . . . . . . . . . .599
Main Harness. . . . . . . . . . . . . . ...602
Engine Control Harness . . . . . . . . . . ..604
Body Harness and Tail Harness. . . . . . . ..606
Body No. 2 Harness . . . . . . . . . . . . 608
Engine Harness . . . . . . . . . . . . . ...610
Room Lamp Harness. . . . . . . . . . . ... 611
Air Bag Harness . . . . . . . . . . . . . ..612
Front Door Harness . . . . . . . . . . . . .613
Rear Door Harness. . . . . . . . . . . . ..614
SPLICE LOCATION. . . . . . . . . . . . . .615
How to Read Splice Location . . . . . . . . ..615
Engine Room Harness . . . . . . . . . . . 616
Main Harness. . . . . . . . . . . . . . ...618
Instrument Harness . . . . . . . . . . . . .619
Engine Control Harness . . . . . . . . . . ..621
Engine Harness . . . . . . . . . . . . . ...622
Body Harness and Tail Harness. . . . . . . ..623
CONTENTS
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Body No. 2 Harness . . . . . . . . . . . . 624
Room Lamp Harness. . . . . . . . . . . ...625
Front Door Harness . . . . . . . . . . . . .626
Rear Door Harness. . . . . . . . . . . . ..627
BULB SPECIFICATIONS . . . . . . . . . . . 628
Headlamp. . . . . . . . . . . . . . . . .628
Exterior Lamp . . . . . . . . . . . . . . ..628
Interior Lamp. . . . . . . . . . . . . . . 628
WIRING DIAGRAM CODES (Cell codes) . . . . ..629
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Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”
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 Q45 is as follows:
I
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.
I
For a side collision
The Supplemental Restraint System consists of front 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:
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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 should be per-
formed by an authorized INFINITI dealer.
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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.
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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 (except satellite sensor and side air bag mod-
ule) covered with yellow insulation tape either just before the harness connectors or for the com-
plete harness are related to the SRS.
PRECAUTIONS
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