Infiniti QX4 R50 1997-2003 Workshop Repair Service Manual PDF Download with Wiring Diagrams - MIFNTQX49703OPEK.zip
A full workshop service and repair manual, complete with electrical wiring diagrams, for the Infiniti QX4 (R50) covering model years 1997 through 2003. This is the identical manual that authorized dealers rely on, and it is assured to arrive complete, undamaged, and with every page accounted for.
The Infiniti QX4 (R50) 1997-2003 service & repair manual (covering maintenance, overhaul, disassembly & reassembly, adjustments, tune-ups, operation, inspection, diagnostics and fault-finding...) is organized into separate sections. Every section focuses on one particular component or system and is supported by detailed illustrations. A table of contents opens each section, so pages can be located quickly by category, and any page can be zoomed in for a closer look. The print-ready PDF files run smoothly on every type of device.
TABLE OF CONTENTS
QUICK REFERENCE INDEX
GENERAL INFORMATION
MAINTENANCE
ENGINE MECHANICAL
ENGINE LUBRICATION & COOLING SYSTEMS
ENGINE CONTROL SYSTEM
ACCELERATOR CONTROL, FUEL & EXHAUST SYSTEMS
CLUTCH
MANUAL TRANSAXLE
AUTOMATIC TRANSAXLE
FRONT AXLE & FRONT SUSPENSION
REAR AXLE & REAR SUSPENSION
BRAKE SYSTEM
STEERING SYSTEM
RESTRAINT SYSTEM
BODY & TRIM
HEATER & AIR CONDITIONER
ELECTRICAL SYSTEM
ALPHABETICAL INDEX
Table of Contents
TROUBLE DIAGNOSIS - INDEX.......5
Alphabetical & P No. Index for DTC.......5
PRECAUTIONS.......7
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER".......7
Precautions for On Board Diagnostic (OBD) System of A/T and Engine.......7
Precautions.......7
Service Notice or Precautions.......9
Wiring Diagrams and Trouble Diagnosis.......10
PREPARATION.......11
Special Service Tools.......11
OVERALL SYSTEM.......13
A/T Electrical Parts Location.......13
Circuit Diagram.......14
Cross-sectional View.......15
Hydraulic Control Circuit.......16
Shift Mechanism.......17
Control System.......26
Control Mechanism.......27
Control Valve.......32
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION.......34
Introduction.......34
OBD-II Function for A/T System.......34
One or Two Trip Detection Logic of OBD-II.......34
OBD-II Diagnostic Trouble Code (DTC).......34
Malfunction Indicator Lamp (MIL).......38
CONSULT-II.......38
Diagnostic Procedure Without CONSULT-II.......47
TROUBLE DIAGNOSIS - INTRODUCTION.......54
Introduction.......54
Work Flow.......58
TROUBLE DIAGNOSIS - BASIC INSPECTION.......60
A/T Fluid Check.......60
Stall Test.......60
Line Pressure Test.......63
Road Test.......64
TROUBLE DIAGNOSIS - GENERAL DESCRIPTION.......82
Symptom Chart.......82
TCM Terminals and Reference Value.......94
TROUBLE DIAGNOSIS FOR POWER SUPPLY.......98
Wiring Diagram - AT - MAIN.......98
Diagnostic Procedure.......99
DTC P0705 PARK/NEUTRAL POSITION SWITCH.......101
Description.......101
Wiring Diagram - AT - PNP/SW.......103
Diagnostic Procedure.......104
Component Inspection.......105
DTC P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT.......107
Description.......107
Wiring Diagram - AT - FTS.......109
Diagnostic Procedure.......110
Component Inspection.......112
DTC P0720 VEHICLE SPEED SENSOR.A/T (REVOLUTION SENSOR).......113
Description.......113
Wiring Diagram - AT - VSSA/T.......115
Diagnostic Procedure.......116
Component Inspection.......117
DTC P0725 ENGINE SPEED SIGNAL.......118
Description.......118
Wiring Diagram - AT - ENGSS.......119
Diagnostic Procedure.......120
DTC P0731 IMPROPER SHIFTING TO 1ST GEAR POSITION.......122
Description.......122
Wiring Diagram - AT - 1ST.......125
Diagnostic Procedure.......126
Component Inspection.......127
DTC P0732 IMPROPER SHIFTING TO 2ND GEAR POSITION.......128
Description.......128
Wiring Diagram - AT - 2ND.......131
Diagnostic Procedure.......132
Component Inspection.......133
DTC P0733 IMPROPER SHIFTING TO 3RD GEAR POSITION.......134
Description.......134
Wiring Diagram - AT - 3RD.......137
Diagnostic Procedure.......138
Component Inspection.......139
DTC P0734 IMPROPER SHIFTING TO 4TH GEAR POSITION.......140
Description.......140
Wiring Diagram - AT - 4TH.......144
Diagnostic Procedure.......145
Component Inspection.......149
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE.......150
Description.......150
Wiring Diagram - AT - TCV.......152
Diagnostic Procedure.......153
Component Inspection.......154
DTC P0744 IMPROPER LOCK-UP OPERATION.......155
Description.......155
Wiring Diagram - AT - TCCSIG.......157
Diagnostic Procedure.......158
Component Inspection.......162
DTC P0745 LINE PRESSURE SOLENOID VALVE.......163
Description.......163
Wiring Diagram - AT - LPSV.......165
Diagnostic Procedure.......166
Component Inspection.......168
DTC P0750 SHIFT SOLENOID VALVE A.......169
Description.......169
Wiring Diagram - AT - SSV/A.......170
Diagnostic Procedure.......171
Component Inspection.......172
DTC P0755 SHIFT SOLENOID VALVE B.......173
Description.......173
Wiring Diagram - AT - SSV/B.......174
Diagnostic Procedure.......175
Component Inspection.......176
DTC P1705 THROTTLE POSITION SENSOR.......177
Description.......177
Wiring Diagram - AT - TPS.......180
Diagnostic Procedure.......181
Component Inspection.......185
DTC P1760 OVERRUN CLUTCH SOLENOID VALVE.......186
Description.......186
Wiring Diagram - AT - OVRCSV.......188
Diagnostic Procedure.......189
Component Inspection.......190
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER SOURCE).......191
Description.......191
Wiring Diagram - AT - BA/FTS.......193
Diagnostic Procedure.......194
Component Inspection.......197
DTC VEHICLE SPEED SENSOR.MTR.......198
Description.......198
Wiring Diagram - AT - VSSMTR.......200
Diagnostic Procedure.......201
DTC TURBINE REVOLUTION SENSOR.......203
Description.......203
Wiring Diagram - AT - TRSA/T.......205
Diagnostic Procedure.......206
Component Inspection.......207
DTC A/T COMMUNICATION LINE.......208
Description.......208
Wiring Diagram - AT - LAN.......210
Diagnostic Procedure.......211
DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM).......212
Description.......212
Diagnostic Procedure.......213
DTC CONTROL UNIT (EEP ROM).......214
Description.......214
Diagnostic Procedure.......215
TROUBLE DIAGNOSES FOR SYMPTOMS.......216
Wiring Diagram - AT - NONDTC.......216
O/D OFF Indicator Lamp Does Not Come On.......219
Engine Cannot Be Started In "P" and "N" Position.......222
In "P" Position, Vehicle Moves Forward Or Backward When Pushed.......224
In "N" Position, Vehicle Moves.......225
Large Shock. "N" -> "R" Position.......227
Vehicle Does Not Creep Backward In "R" Position.......228
Vehicle Does Not Creep Forward In "D", "2" Or "1" Position.......231
Vehicle Cannot Be Started From D1.......234
A/T Does Not Shift: D1 -> D2 Or Does Not Kickdown: D4 -> D2.......237
A/T Does Not Shift: D2 -> D3.......240
A/T Does Not Shift: D3 -> D4.......242
A/T Does Not Perform Lock-up.......245
A/T Does Not Hold Lock-up Condition.......247
Lock-up Is Not Released.......249
Engine Speed Does Not Return To Idle (Light Braking D4 -> D3).......250
Vehicle Does Not Start From D1.......252
A/T Does Not Shift: D4 -> D3, When Overdrive Control Switch "ON" -> "OFF".......253
A/T Does Not Shift: D3 -> 22, When Selector Lever "D" -> "2" Position.......254
A/T Does Not Shift: 22 -> 11, When Selector Lever "2" -> "1" Position.......255
Vehicle Does Not Decelerate By Engine Brake.......256
TCM Self-diagnosis Does Not Activate (PNP, Overdrive Control and Throttle Position Switches Circuit Checks).......256
A/T SHIFT LOCK SYSTEM.......264
Description.......264
Wiring Diagram - SHIFT -.......265
Diagnostic Procedure.......266
KEY INTERLOCK CABLE.......270
Components.......270
Removal.......270
Installation.......271
ON-VEHICLE SERVICE.......272
Control Valve Assembly and Accumulators.......272
Revolution Sensor Replacement.......273
Turbine Revolution Sensor Replacement.......273
Rear Oil Seal Replacement.......273
Rear Oil Seal and Companion Flange Oil Seal Replacement.......274
Parking Components Inspection.......274
Park/Neutral Position Switch Adjustment.......275
Manual Control Linkage Adjustment.......275
REMOVAL AND INSTALLATION.......276
Removal.......276
Installation.......277
OVERHAUL.......280
Components.......280
Oil Channel.......283
Locations of Needle Bearings, Thrust Washers and Snap Rings.......284
DISASSEMBLY.......285
REPAIR FOR COMPONENT PARTS.......296
Oil Pump.......296
Control Valve Assembly.......300
Control Valve Upper Body.......306
Control Valve Lower Body.......311
Reverse Clutch.......313
High Clutch.......316
Forward and Overrun Clutches.......319
Low & Reverse Brake.......323
Forward Clutch Drum Assembly.......327
Rear Internal Gear and Forward Clutch Hub.......329
Band Servo Piston Assembly.......332
Parking Pawl Components.......336
ASSEMBLY.......338
Assembly (1).......338
Adjustment.......346
Assembly (2).......348
SERVICE DATA AND SPECIFICATIONS (SDS).......355
General Specifications.......355
Shift Schedule.......355
Stall Revolution.......355
Line Pressure.......355
Return Springs.......356
Accumulator O-ring.......357
Clutches and Brakes.......357
Oil Pump and Low One-way Clutch.......359
Total End Play.......359
Reverse Clutch Drum End Play.......360
Removal and Installation.......360
Shift Solenoid Valves.......360
Solenoid Valves.......360
A/T Fluid Temperature Sensor.......360
Turbine Revolution Sensor.......360
Revolution Sensor.......361
Dropping Resistor.......361
AX.......362
Table of Contents.......362
FRONT AXLE.......363
Precautions.......363
PRECAUTIONS.......363
Preparation.......363
SPECIAL SERVICE TOOLS.......363
COMMERCIAL SERVICE TOOLS.......363
Noise, Vibration and Harshness (NVH) Troubleshooting.......364
NVH TROUBLESHOOTING CHART.......364
On-vehicle Service.......364
FRONT AXLE PARTS.......364
FRONT WHEEL BEARING.......365
DRIVE SHAFT (4WD).......366
Wheel Hub and Rotor Disc.......367
COMPONENTS.......367
REMOVAL.......368
INSTALLATION.......370
DISASSEMBLY.......370
INSPECTION.......370
ASSEMBLY.......371
Knuckle Spindle.......371
REMOVAL.......371
INSPECTION.......372
INSTALLATION.......372
Drive Shaft (4WD).......373
COMPONENTS.......373
REMOVAL.......373
DISASSEMBLY.......374
INSPECTION.......375
ASSEMBLY.......375
INSTALLATION.......376
Service Data and Specifications (SDS).......377
WHEEL BEARING (FRONT).......377
DRIVE SHAFT (4WD).......377
REAR AXLE.......379
Precautions.......379
PRECAUTIONS.......379
Preparation.......379
SPECIAL SERVICE TOOLS.......379
COMMERCIAL SERVICE TOOLS.......380
Noise, Vibration and Harshness (NVH) Troubleshooting.......380
On-vehicle Service.......380
REAR AXLE PARTS.......380
REAR WHEEL BEARING.......380
Components.......381
Removal.......381
Inspection.......383
AXLE SHAFT.......383
BEARING CAGE.......383
REAR AXLE HOUSING.......383
Installation.......383
Service Data and Specifications (SDS).......384
WHEEL BEARING (REAR).......384
BR.......386