Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Infiniti Q45FACTORY OEM SERVICE PROCEDURE
External Pages
These are pages that do not belong to the exact selected vehicle (2002 Infiniti Q45), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle.
- Different car
- Section 1 (How To Use The Engine Performance Section)
- Section 2 (Electronic Suspension - Wiring Diagrams)
- Section 3 (Engine Controls - Self-Diagnostics - G20)
- Section 4 (Engine Controls - Service & Adjustment Specifications)
- Section 5 (Engine Controls - On-Vehicle Adjustments)
- Section 6 (Engine Controls - Basic Diagnostic Procedures)
- Section 7 (Engine Controls - Self-Diagnostics)
- Section 8 (Engine Controls - Self-Diagnostics - 2.2L)
- Section 9 (Engine Controls - Trouble Shooting - No Codes)
- Section 10 (Engine Controls - System & Component Testing)
- Section 11 (Engine Controls - Pin Voltage Charts)
- Section 12 (Vacuum Diagrams)
- Section 13 (Engine Controls - Removal, Overhaul & Installation)
- Section 14 (Engine Performance - Wiring Diagrams)
- Section 15 (Wiring Diagrams)
- Section 16 (Engine Controls - Service & Adjustment Specifications)
- Section 17 (Engine Controls - On-Vehicle Adjustments)
- Section 18 (Engine Controls - Theory & Operation)
- Section 19 (Engine Controls - Basic Diagnostic Procedures)
- Section 20 (Engine Controls - Self-Diagnostics)
- Section 21 (Engine Controls - Self-Diagnostics)
- Section 22 (Engine Controls - Self-Diagnostics)
- Section 23 (Engine Controls - Trouble Shooting - No Codes)
- Section 24 (Engine Controls - System & Component Testing)
- Section 25 (Engine Controls - System & Component Testing)
- Section 26 (Engine Controls - Pin Voltage Charts)
- Section 27 (Vacuum Diagrams)
- Section 28 (Engine Controls - Removal, Overhaul & Installation)
- Section 29 (Wiring Diagrams)
- Section 30 (Engine Controls - On-Vehicle Adjustments - 4 CYL & V6)
- Section 31 (Engine Controls - Service & Adjustment Specifications - 4 CYL & V6)
- Section 32 (Engine Controls - Theory & Operation - 4 CYL & V6)
- Section 33 (Engine Controls - Basic Diagnostic Procedures - 4 CYL & V6)
- Section 34 (Engine Controls - Self-Diagnostics)
- Section 35 (Engine Controls - Self-Diagnostics - 1.8L - XE, GXE)
- Section 36 (Engine Controls - Self-Diagnostics - Quest)
- Section 37 (Engine Controls - Trouble Shooting - No Codes - 4 CYL & V6)
- Section 38 (Engine Controls - System & Component Testing - 4 CYL & V6)
- Section 39 (Engine Controls - Pin Voltage Charts - 4 CYL & V6)
- Section 40 (Engine Controls - Sensor Operating Range Specifications - 4 CYL & V6)
- Section 41 (Vacuum Diagrams)
- Section 42 (Engine Controls - Removal, Overhaul & Installation)
- Section 43 (Engine Performance Wiring Diagrams)
- Section 44 (Disc Brakes)
- Section 45 (Disc Brakes)
- Section 46 (Starters)
- Section 47 (Automatic A/C-Heater Systems)
- Section 48 (Automatic Transmission Diagnosis - U140E & U140F)
- Section 49 (System Wiring Diagrams)
- Section 50 (System Wiring Diagrams)
- Section 51 (System Wiring Diagrams)
- Section 52 (Overhaul - A650E)
- Section 53 (Automatic Transmission - Diagnosis)
- Section 54 (Diagnosis - U150E)
- Section 55 (Engine Controls - Self-Diagnostics - 3.2L)
- Section 56 (Automatic Transmission Shift Interlock Systems)
- Section 57 (Engine Controls Self-Diagnostics - Pathfinder & QX4)
- Section 58 (Engine Controls - Self-Diagnostics)
- Section 59 (Air Bag Restraint Systems)
- Section 60 (Air Bag Restraint Systems)
- Section 61 (Air Bag Restraint Systems)
- Section 62 (System Wiring Diagrams)
- Section 63 (System Wiring Diagrams)
- Section 64 (System Wiring Diagrams)
- Section 65 (Power Door Locks, Trunk Lid & Fuel Door Release)
- Section 66 (Engine Controls - Service & Adjustment Specifications)
- Section 67 (Engine Controls - On-Vehicle Adjustments)
- Section 68 (Engine Controls - Theory & Operation)
- Section 69 (Engine Controls - Basic Diagnostic Procedures)
- Section 70 (Engine Controls - Self-Diagnostics)
- Section 71 (Engine Controls - Self-Diagnostics)
- Section 72 (Engine Controls - Self-Diagnostics)
- Section 73 (Engine Controls - Self-Diagnostics)
- Section 74 (Engine Controls - Self-Diagnostics)
- Section 75 (Engine Controls - Trouble Shooting - No Codes)
- Section 76 (Engine Controls - System & Component Testing)
- Section 77 (Engine Controls - System & Component Testing)
- Section 78 (Engine Controls - System & Component Testing)
- Section 79 (Engine Controls - Pin Voltage Charts)
- Section 80 (Engine Controls - Sensor Operating Range Charts)
- Section 81 (Vacuum Diagrams)
- Section 82 (Engine Controls (Removal & Installation))
- Section 83 (Engine Controls - On-Vehicle Adjustments)
- Section 84 (Engine Controls - Basic Diagnostic Procedures)
- Section 85 (Engine Controls - Self-Diagnostics)
- Section 86 (Engine Controls - Trouble Shooting - No Codes)
- Section 87 (Engine Controls - System & Component Testing)
- Section 88 (Engine Controls - Pin Voltage Charts)
- Section 89 (Engine Controls - Sensor Operating Range Charts)
- Section 90 (Vacuum Diagrams)
- Section 91 (Engine Controls - Service & Adjustment Specifications)
- Section 92 (Engine Controls - On-Vehicle Adjustments)
- Section 93 (Engine Controls - Basic Diagnostic Procedures)
- Section 94 (Engine Controls - Self-Diagnostics)
- Section 95 (Engine Controls Self-Diagnostics - Pathfinder)
- Section 96 (Engine Controls - Trouble Shooting - No Codes)
- Section 97 (Engine Controls - System & Component Testing)
- Section 98 (Engine Controls - Pin Voltage Charts)
- Section 99 (Vacuum Diagrams)
- Section 100 (Engine Controls - Self-Diagnostics (QG18DE))
- Section 101 (Multiplex Communication System)
- Section 102 (Engine Immobilizer System)
- Section 103 (Anti-Theft Systems)
- Section 104 (Remote Keyless Entry Systems)
- Section 105 (Power Mirrors)
- Section 106 (Power Seats)
- Section 107 (Cruise Control Systems)
- Section 108 (Instrument Panel)
- Section 109 (Steering Column Switches)
- Section 110 (Wiper/Washer Systems)
- Section 111 (Automatic Headlights)
- Section 112 (Power Moon Roofs)
- Section 113 (Anti-Lock)
- Section 114 (Anti-Lock)
- Section 115 (Multiplex Communication System)
- Section 116 (Body Control System)
- Section 117 (Instrument Panel)
- Section 118 (Steering Column Switches)
- Section 119 (Automatic Headlights & Lighting)
- Section 120 (Wiper/Washer Systems)
- Section 121 (Power & Heated Seats)
- Section 122 (Moon Roof)
- Section 123 (Power Windows)
- Section 124 (Power Door Locks & Liftgate)
- Section 125 (Anti-Theft System)
- Section 126 (Remote Keyless Entry)
- Section 127 (Engine Immobilizer)
- Section 128 (Cruise Control)
- Section 129 (Anti-Lock Brake System)
- Section 130 (Rear Window Defogger)
- Section 131 (Power Windows)
- Section 132 (Electronic Suspension)
- Section 133 (Smart Entrance Control Unit)
- Section 134 (Anti-Theft System)
- Section 135 (Power Door Locks)
- Section 136 (Remote Keyless Entry System)
- Section 137 (Instrument Panel)
- Section 138 (Engine Immobilizer System - Diagnosis)
- Section 139 (Fuses & Circuit Breakers)
- Section 140 (Servicing A/T)
- Section 141 (Front Suspension)
- Section 142 (Wheel Alignment Specifications & Adjustment Procedures)
- Section 143 (Timing Belt Replacement - 4.3L V8)
- Section 144 (Computer Relearn Procedures)
- Section 145 (Computer Relearn Procedures)
- Section 146 (System Wiring Diagrams)
- Section 147 (Engine Controls - Self-Diagnostics)
- Section 148 (Engine Controls - System & Component Testing)
- Section 149 (System Wiring Diagrams)
- Section 150 (System Wiring Diagrams)
- Section 151 (System Wiring Diagrams)
- Section 152 (Engine Controls Removal & Installation)
- Section 153 (System Wiring Diagrams)
- Section 154 (System Wiring Diagrams)
- Section 155 (System Wiring Diagrams)
- Section 156 (System Wiring Diagrams)
- Section 157 (System Wiring Diagrams)
- Section 158 (Engine Mechanical)
- Section 159 (Engine Mechanical)
- Section 160 (Engine Controls - Removal & Installation)
- Section 161 (Engine Controls - Removal & Installation)
- Section 162 (Engine Controls - Removal & Installation)
- Section 163 (Air Bag Restraint Systems)
- Section 164 (Air Bag Restraint Systems)
- Section 165 (Air Bag Restraint Systems)
- Section 166 (Air Bag Restraint Systems)
- Section 167 (Air Bag Restraint Systems)
- Section 168 (Common Specs & Procedures)
- Section 169 (Computer Relearn Procedures)
- Section 170 (Specifications & Procedures)
- Section 171 (Specifications & Procedures)
- Section 172 (Wheel Alignment Specifications & Procedures)
- Section 173 (Wheel Alignment Specifications & Adjustment Procedures)
- Section 174 (Wheel Alignment Specifications & Procedures)
- Section 175 (Wheel Alignment Specifications & Adjustment Procedures)
- Section 176 (Brakes Mechanical)
- Section 177 (Electrical Component Locator)
- Section 178 (Computer Relearn Procedures)
- Section 179 (Disc & Drum)
- Section 180 (Electric Cooling Fans)
- Section 181 (Engine Mechanical)
- Section 182 (Axle Shafts - Front)
- Section 183 (Axle Shafts)
- Section 184 (Charging System - Generators & Regulators)
- Section 185 (Front Suspension)
- Section 186 (Front Suspension)
- Section 187 (Cooling System Specifications & Drive Belt Routing)
- Section 188 (Fuses & Circuit Breakers)
- Section 189 (Rear Suspension)
- Section 190 (Rear Suspension)
- Section 191 (Front Suspension)
- Section 192 (Rear Suspension)
- Section 193 (Generators & Regulators)
- Section 194 (System Wiring Diagrams)
- Section 195 (System Wiring Diagrams)
- Section 196 (System Wiring Diagrams)
- Section 197 (System Wiring Diagrams)
- Section 198 (Servicing)
- Section 199 (Generators & Regulators)
- Section 200 (Automatic Transmission Servicing)
- Section 201 (Automatic Transmission Servicing)
- Section 202 (Generators & Regulators)
- Section 203 (Generators & Regulators)
- Section 204 (Servicing)
- Section 205 (Starting System)
- Section 206 (Starters)
- Section 207 (Intelligent Cruise Control System)
- Section 208 (Air Bag Restraint Systems)
- Section 209 (Air Bag Restraint Systems)
- Section 210 (Air Bag Restraint Systems)
- Section 211 (Diagnosis)
- Section 212 (Automatic Air Conditioner)
- Section 213 (Overhaul)
- Section 214 (Removal & Installation)
- Section 215 (Accelerator Control System)
- Section 216 (Engine Control System)
- Section 217 (Instrument Panel)
- Section 218 (Driver Information System)
- Section 219 (Brake Control System)
- Section 220 (Engine Cooling System)
- Section 221 (Fuel System)
- Section 222 (Power Steering System)
- Section 223 (Propeller Shaft)
- Section 224 (Rear Final Drive)
- Section 225 (Electronic Key System)
- Section 226 (Engine Mechanical - 2.5L)
- Section 227 (Engine Mechanical - 3.5L)
- Section 228 (General Information)
- Section 229 (Can)
- Section 230 (General Information)
- Section 231 (Engine Lubrication System)
- Section 232 (Seat Belts)
- Section 233 (Hood)
- Section 234 (IVIS (INFINITI Vehicle Immobilizer System-NATS))
- Section 235 (Rear Window Defogger)
- Section 236 (Headlamp (For USA))
- Section 237 (Air Conditioning)
- Section 238 (Propeller Shaft)
- Section 239 (Steering System)
- Section 240 (Power Tilt And Power Telescopic Steering Column)
- Section 241 (Air Conditioning System)
- Section 242 (Abs)
- Section 243 (Alignment Specifications & Procedures)
- Section 244 (General Information)
- Section 245 (Engine Lubrication System - 2.5L)
- Section 246 (Engine Cooling System - 2.5L)
- Section 247 (Exhaust System - 2.5L)
- Section 248 (Clutch)
- Section 249 (Manual Transmission)
- Section 250 (Automatic Transmission)
- Section 251 (Road Wheels & Tires)
- Section 252 (Power Steering Gear And Linkage)
- Section 253 (Seat Belt System)
- Section 254 (Power Door Lock System)
- Section 255 (Remote Keyless Entry System)
- Section 256 (Trunk Lid Opener)
- Section 257 (Power Window System)
- Section 258 (Rear Window Defogger)
- Section 259 (Sun Roof)
- Section 260 (Exterior Trim & Interior Trim)
- Section 261 (Instrument Panel)
- Section 262 (Seat System)
- Section 263 (Automatic Air Conditioner)
- Section 264 (Power Supply Routing Circuit)
- Section 265 (IPDM E/R (Intelligent Power Distribution Module Engine Room))
- Section 266 (Ground Circuit)
- Section 267 (Combination Meters)
- Section 268 (Warning System - Warning Lamps)
- Section 269 (BCM (Body Control Module))
- Section 270 (Can System)
- Section 271 (Audio System, Visual System & Telephone System)
- Section 272 (Manual Air Conditioner)
- Section 273 (General Information)
- Section 274 (Engine Mechanical)
- Section 275 (Engine Cooling System)
- Section 276 (Exhaust System)
- Section 277 (Clutch System)
- Section 278 (Manual Transaxle)
- Section 279 (Transfer Case - ATX14A)
- Section 280 (Driveshaft)
- Section 281 (Front Final Drive)
- Section 282 (Abs)
- Section 283 (Body & Trim)
- Section 284 (Harness Connector)
- Section 285 (Power Supply Routing)
- Section 286 (Headlamp (For USA))
- Section 287 (Headlamp (For CANADA) Daytime Light System)
- Section 288 (Parking License & Tail Lamps)
- Section 289 (Meters And Gauges)
- Section 290 (Warning System - Warning Lamps)
- Section 291 (Audio System)
- Section 292 (Power Sunroof)
- Section 293 (Vehicle Security (Theft Warning) System)
- Section 294 (Can Communication)
- Section 295 (Wiper System & Washer System & Horn System)
- Section 296 (Automatic Transmission)
- Section 297 (Engine Lubrication System - 3.5L)
- Section 298 (Engine Cooling System - 3.5L)
- Section 299 (Exhaust System - 3.5L)
- Section 300 (Anti-Lock Brake System & Traction Control System - Abs/TCS)
- Section 301 (Standard Bolt)
- Section 302 (Automatic Transmission (Service Specifications))
- Section 303 (Engine Control System - Diagnosis)
- Section 304 (Electronic Modulated Suspension - Diagnosis)
- Section 305 (Abs W/ EBD - Diagnosis)
- Section 306 (Abs W/EBD & BA & TRAC & VSC System - Diagnosis)
- Section 307 (Automatic Transaxle - Diagnosis)
- Section 308 (Air Conditioning System - Diagnosis)
- Section 309 (Lighting System - Diagnosis)
- Section 310 (Wiper & Washer - Diagnosis)
- Section 311 (Audio System - Diagnosis)
- Section 312 (Power Window Control System - Diagnostics)
- Section 313 (Power Mirror Control System - Diagnosis)
- Section 314 (Combination Meter - Diagnosis)
- Section 315 (Front Power Seat Control System (With Memory) - Diagnosis)
- Section 316 (Power Door Lock - Diagnosis)
- Section 317 (Wireless Door Lock - Diagnosis)
- Section 318 (Luggage Compartment Door Opener System - Diagnosis)
- Section 319 (Key Unlock Warning System - Diagnosis)
- Section 320 (Engine Immobilizer System - Diagnosis)
- Section 321 (Theft Deterrent System - Diagnosis)
- Section 322 (Multiplex Communication System - Diagnosis)
- Section 323 (Can Communication System - Diagnosis)
- Section 324 (Cruise Control System - Diagnosis)
- Section 325 (Engine Control System)
- Section 326 (Fuel System)
- Section 327 (Emission Control System)
- Section 328 (Intake Air Control System)
- Section 329 (Engine (Mechanical))
- Section 330 (Engine Exhaust Assembly)
- Section 331 (Cooling System)
- Section 332 (Lubrication System)
- Section 333 (Ignition System)
- Section 334 (Wheel Alignment)
- Section 335 (Abs Brake Sensors/Actuators)
- Section 336 (Automatic Transaxle (On-Vehicle Service))
- Section 337 (Steering Column)
- Section 338 (Power Steering)
- Section 339 (Heater & Air Conditioner)
- Section 340 (Instrument Panel/Meter)
- Section 341 (Theft Deterrent Systems)
- Section 342 (Sliding Roof System)
- Section 343 (Cruise Control)
- Section 344 (Engine Hood/Door (Service Specifications))
- Section 345 (Steering Column)
- Section 346 (Headlight Dimmer Switch)
- Section 347 (Audio & Visual System)
- Section 348 (Instrument Panel/Meter)
- Section 349 (Rear Seat)
- Section 350 (Front Door)
- Section 351 (Rear Door)
- Section 352 (Introduction)
- Section 353 (Automatic Transmission (Service Specifications))
- Section 354 (Automatic Transmission - Diagnosis)
- Section 355 (Power Tilt & Telescopic Steering Column - Diagnosis)
- Section 356 (Power Seat Control System - Diagnosis)
- Section 357 (Rear Left Seat Control System - Diagnosis)
- Section 358 (Rear Right Seat Control System - Diagnosis)
- Section 359 (Rear Seat Switch System - Diagnosis)
- Section 360 (Theft Deterrent System - Diagnosis)
- Section 361 (Cruise Control System - Diagnosis)
- Section 362 (Engine Immobilizer System - Diagnosis)
- Section 363 (Combination Meter System - Diagnosis)
- Section 364 (Combination Switch Control System - Diagnosis)
- Section 365 (Steering Pad Switch System - Diagnosis)
- Section 366 (Rain Sensor System - Diagnosis)
- Section 367 (Sliding Roof - Diagnosis)
- Section 368 (Driver Side Junction Block (Body No. 2 Control System) - Diagnosis)
- Section 369 (Passenger Side Junction Block (Body No. 3 ) Control System - Diagnosis)
- Section 370 (Luggage Room Junction Block (Body No. 4) Control System - Diagnosis)
- Section 371 (Front Light (Body No. 5) Control System - Diagnosis)
- Section 372 (Driver Door Control System - Diagnosis)
- Section 373 (Passenger Door Control System - Diagnosis)
- Section 374 (Rear Left Door Control System - Diagnosis)
- Section 375 (Rear Right Door Control System - Diagnosis)
- Section 376 (Gateway System - Diagnosis)
- Section 377 (Audio System - Diagnosis)
- Section 378 (LEXUS Navigation System - Diagnosis)
- Section 379 (LEXUS Link System - Diagnosis)
- Section 380 (LEXUS Park Assist System - Diagnosis)
- Section 381 (Air Conditioning System - Diagnosis)
- Section 382 (Troubleshooting)
- Section 383 (Power Source)
- Section 384 (Ignition Switch & Key Unlock Warning Switch)
- Section 385 (Headlight & Taillight System)
- Section 386 (Headlight Beam Level Control System)
- Section 387 (Fog Light System)
- Section 388 (Turn Signal & Hazard Warning System)
- Section 389 (Illumination Light System)
- Section 390 (Interior Light System)
- Section 391 (Stop Light System)
- Section 392 (Headlight Cleaner System)
- Section 393 (Wiper & Washer System)
- Section 394 (Combination Meter)
- Section 395 (Defogger System)
- Section 396 (Power Window Control System)
- Section 397 (Power Door Lock Control System)
- Section 398 (Wireless Door Lock Control System)
- Section 399 (Power Seat Control System)
- Section 400 (Power Mirror Control System)
- Section 401 (Power Shoulder Belt Anchorage System)
- Section 402 (Electro Chromic Mirror System)
- Section 403 (Climate Control Seat System)
- Section 404 (Fuel Lid Opener System)
- Section 405 (Door Closer System)
- Section 406 (Luggage Compartment Door Closer System)
- Section 407 (LEXUS Park Assist System)
- Section 408 (Rear Sunshade System)
- Section 409 (Clock)
- Section 410 (Overhead Junction Block)
- Section 411 (Garage Door Opener System)
- Section 412 (Horn System)
- Section 413 (Sliding Roof - Removal & Installation)
- Section 414 (Instrument Panel)
- Section 415 (Rear Seat (Fixed Type))
- Section 416 (Rear Seat (Power Adjuster Type))
- Section 417 (Seat Belt)
- Section 418 (Seat Belt PRETENSIONER (Front))
- Section 419 (Seat Belt PRETENSIONER (Rear))
- Section 420 (Seat Heater System)
- Section 421 (Fuel System)
- Section 422 (Starting System)
- Section 423 (Charging System)
- Section 424 (Seat Belt System)
- Section 425 (Shift Lock System)
- Section 426 (O/D Direct Clutch Speed Sensor)
- Section 427 (ATF Oil Temperature Sensor)
- Section 428 (Automatic Transmission Unit (Removal & Installation))
- Section 429 (Front Axle)
- Section 430 (Introduction)
- Section 431 (Tire & Wheel)
- Section 432 (Seat Belt)
- Section 433 (Lighting)
- Section 434 (Power Window Control System)
- Section 435 (Mirrors)
- Section 436 (Seats)
- Section 437 (Doors)
- Section 438 (Bumpers)
- Section 439 (Exhaust System)
- Section 440 (Engine Exhaust Assembly)
- Section 441 (Exterior/Interior Trim)
- Section 442 (Firing Order & Cylinder Identification)
- Section 443 (EGR Function Testing - INFINITI)
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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