2001 Infiniti QX4 4WDFACTORY OEM SERVICE PROCEDURE

External Pages

's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different car Section 1 (Engine Performance Wiring Diagrams) Section 2 (Electronic Suspension - Wiring Diagrams) Section 3 (Engine Controls - Self-Diagnostics - Q45) Section 4 (Wiring Diagrams) Section 5 (Engine Controls - Service & Adjustment Specifications) Section 6 (Engine Controls - On-Vehicle Adjustments) Section 7 (Engine Controls - Basic Diagnostic Procedures) Section 8 (Engine Controls - Self-Diagnostics) Section 9 (Engine Controls - Self-Diagnostics - 2.2L) Section 10 (Engine Controls - Trouble Shooting - No Codes) Section 11 (Engine Controls - System & Component Testing) Section 12 (Engine Controls - Pin Voltage Charts) Section 13 (Vacuum Diagrams) Section 14 (Engine Controls - Removal, Overhaul & Installation) Section 15 (Engine Performance - Wiring Diagrams) Section 16 (Wiring Diagrams) Section 17 (Engine Controls - Service & Adjustment Specifications) Section 18 (Engine Controls - On-Vehicle Adjustments) Section 19 (Engine Controls - Theory & Operation) Section 20 (Engine Controls - Basic Diagnostic Procedures) Section 21 (Engine Controls - Self-Diagnostics) Section 22 (Engine Controls - Self-Diagnostics) Section 23 (Engine Controls - Self-Diagnostics) Section 24 (Engine Controls - Trouble Shooting - No Codes) Section 25 (Engine Controls - System & Component Testing) Section 26 (Engine Controls - System & Component Testing) Section 27 (Engine Controls - Pin Voltage Charts) Section 28 (Vacuum Diagrams) Section 29 (Engine Controls - Removal, Overhaul & Installation) Section 30 (Wiring Diagrams) Section 31 (Engine Controls - On-Vehicle Adjustments - 4 CYL & V6) Section 32 (Engine Controls - Basic Diagnostic Procedures - 4 CYL & V6) Section 33 (Engine Controls - Self-Diagnostics) Section 34 (Engine Controls - Self-Diagnostics - 1.8L - XE, GXE) Section 35 (Engine Controls - Self-Diagnostics - Quest) Section 36 (Engine Controls - Trouble Shooting - No Codes - 4 CYL & V6) Section 37 (Engine Controls - System & Component Testing - 4 CYL & V6) Section 38 (Engine Controls - Pin Voltage Charts - 4 CYL & V6) Section 39 (Vacuum Diagrams) Section 40 (Engine Controls - Removal, Overhaul & Installation) Section 41 (Engine Performance Wiring Diagrams) Section 42 (Disc Brakes) Section 43 (Disc Brakes) Section 44 (Starters) Section 45 (Automatic A/C-Heater Systems) Section 46 (Automatic Transmission Diagnosis - U140E & U140F) Section 47 (System Wiring Diagrams) Section 48 (System Wiring Diagrams) Section 49 (System Wiring Diagrams) Section 50 (Overhaul - A650E) Section 51 (Automatic Transmission Diagnosis - Re4F04 Series) Section 52 (Automatic Transmission - Diagnosis) Section 53 (Diagnosis - U150E) Section 54 (Engine Controls - Self-Diagnostics - 3.2L) Section 55 (Automatic Transmission Shift Interlock Systems) Section 56 (Computer Relearn Procedures - Import) 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 (Air Bag Restraint Systems) Section 63 (Air Bag Restraint Systems) Section 64 (System Wiring Diagrams) Section 65 (System Wiring Diagrams) Section 66 (System Wiring Diagrams) Section 67 (System Wiring Diagrams) Section 68 (System Wiring Diagrams) Section 69 (System Wiring Diagrams) Section 70 (Power Door Locks, Trunk Lid & Fuel Door Release) Section 71 (Engine Controls - Service & Adjustment Specifications) Section 72 (Engine Controls - On-Vehicle Adjustments) Section 73 (Engine Controls - Theory & Operation) Section 74 (Engine Controls - Basic Diagnostic Procedures) Section 75 (Engine Controls - Self-Diagnostics) Section 76 (Engine Controls - Self-Diagnostics) Section 77 (Engine Controls - Self-Diagnostics) Section 78 (Engine Controls - Self-Diagnostics) Section 79 (Engine Controls - Self-Diagnostics) Section 80 (Engine Controls - Trouble Shooting - No Codes) Section 81 (Engine Controls - System & Component Testing) Section 82 (Engine Controls - System & Component Testing) Section 83 (Engine Controls - System & Component Testing) Section 84 (Engine Controls - Pin Voltage Charts) Section 85 (Engine Controls - Sensor Operating Range Charts) Section 86 (Vacuum Diagrams) Section 87 (Engine Controls (Removal & Installation)) Section 88 (Engine Controls - On-Vehicle Adjustments) Section 89 (Engine Controls - Basic Diagnostic Procedures) Section 90 (Engine Controls - Self-Diagnostics) Section 91 (Engine Controls - Trouble Shooting - No Codes) Section 92 (Engine Controls - System & Component Testing) Section 93 (Engine Controls - Pin Voltage Charts) Section 94 (Engine Controls - Sensor Operating Range Charts) Section 95 (Vacuum Diagrams) Section 96 (Engine Controls - Service & Adjustment Specifications) Section 97 (Engine Controls - On-Vehicle Adjustments) Section 98 (Engine Controls - Basic Diagnostic Procedures) Section 99 (Engine Controls - Self-Diagnostics) Section 100 (Engine Controls Self-Diagnostics - Pathfinder) Section 101 (Engine Controls - Trouble Shooting - No Codes) Section 102 (Engine Controls - System & Component Testing) Section 103 (Engine Controls - Pin Voltage Charts) Section 104 (Vacuum Diagrams) Section 105 (Engine Controls - Self-Diagnostics (QG18DE)) Section 106 (Multiplex Communication System) Section 107 (Engine Immobilizer System) Section 108 (Anti-Theft Systems) Section 109 (Remote Keyless Entry Systems) Section 110 (Power Mirrors) Section 111 (Power Seats) Section 112 (Cruise Control Systems) Section 113 (Power Rack & Pinion) Section 114 (Instrument Panel) Section 115 (Steering Column Switches) Section 116 (Wiper/Washer Systems) Section 117 (Automatic Headlights) Section 118 (Electronic Power Steering) Section 119 (Power Moon Roofs) Section 120 (Electronic) Section 121 (Anti-Lock) Section 122 (Anti-Lock) Section 123 (Multiplex Communication System) Section 124 (Body Control System) Section 125 (Instrument Panel) Section 126 (Steering Column Switches) Section 127 (Automatic Headlights & Lighting) Section 128 (Wiper/Washer Systems) Section 129 (Power & Heated Seats) Section 130 (Moon Roof) Section 131 (Power Windows) Section 132 (Power Door Locks & Liftgate) Section 133 (Anti-Theft System) Section 134 (Remote Keyless Entry) Section 135 (Engine Immobilizer) Section 136 (Cruise Control) Section 137 (Instrument Panel Diagnosis & Testing) Section 138 (Anti-Lock Brake System) Section 139 (Rear Window Defogger) Section 140 (Power Windows) Section 141 (Electronic Suspension) Section 142 (Cabin Air Filter) Section 143 (Smart Entrance Control Unit) Section 144 (Anti-Theft System) Section 145 (Power Door Locks) Section 146 (Remote Keyless Entry System) Section 147 (Instrument Panel) Section 148 (Engine Immobilizer System - Diagnosis) Section 149 (Fuses & Circuit Breakers) Section 150 (Servicing A/T) Section 151 (Front Suspension) Section 152 (Wheel Alignment Specifications & Adjustment Procedures) Section 153 (Timing Belt Replacement - 4.3L V8) Section 154 (Computer Relearn Procedures) Section 155 (Computer Relearn Procedures) Section 156 (Computer Relearn Procedures) Section 157 (System Wiring Diagrams) Section 158 (Engine Controls - Self-Diagnostics) Section 159 (Engine Controls - System & Component Testing) Section 160 (System Wiring Diagrams) Section 161 (System Wiring Diagrams) Section 162 (System Wiring Diagrams) Section 163 (Engine Controls Removal & Installation) Section 164 (System Wiring Diagrams) Section 165 (System Wiring Diagrams) Section 166 (System

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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