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1994 INFINITI Q45 G50 Series Service Manual PDF DOWNLOAD
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Description
1994 INFINITI Q45 G50 Series Service Manual PDF DOWNLOAD
FILE DETAILS:
1994 INFINITI Q45 G50 Series Service Manual PDF DOWNLOAD
Language : English
Pages : 1380
Downloadable : Yes
File Type : PDF
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TABLE OF CONTENTS:
1994 INFINITI Q45 G50 Series Service Manual PDF DOWNLOAD
fwd......................................................................................... 1 Model Selection......................................................................... 0 QUICK REFERENCE INDEX................................................................... 1 FOREWORD................................................................................ 2 GI - General Information................................................................ 0 MA - Maintenance........................................................................ 0 EM - Engine Mechanical.................................................................. 0 LC - Engine Lubrication & Cooling System................................................ 0 EF & EC - Engine Fuel & Emission Control System......................................... 0 FE - Accelerator Control, Fuel & Exhaust Systems........................................ 0 AT - Automatic Transmission............................................................. 0 PD - Propeller Shaft & Differential Carrier............................................. 0 FA - Front Axle & Front Suspension...................................................... 0 RA - Rear Axle & Rear Suspension........................................................ 0 BR - Brake System....................................................................... 0 ST - Steering System.................................................................... 0 BF - Body............................................................................... 0 HA - Heater & Air Conditioner........................................................... 0 EL - Electrical System.................................................................. 0 Foldout................................................................................. 0 Inch to Metric Conversion............................................................... 3 Quick Reference Chart................................................................... 4 at.......................................................................................... 5 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 5 PREPARATION AND PRECAUTIONS............................................................. 6 Special Service Tools............................................................... 6 Precautions......................................................................... 7 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"............... 8 DESCRIPTION............................................................................. 9 Cross-sectional View................................................................ 9 Hydraulic Control Circuits.......................................................... 10 Shift Mechanism..................................................................... 11 Control System...................................................................... 13 TROUBLE DIAGNOSES....................................................................... 15 Contents............................................................................ 15 TROUBLE DIAGNOSES - A/T Shift Lock System............................................... 95 Contents............................................................................ 95 ON-VEHICLE SERVICE...................................................................... 110 Control Valve Assembly and Accumulators Inspection.................................. 110 Kickdown Switch Adjustment.......................................................... 110 Revolution Sensor Replacement....................................................... 111 Rear Oil Seal Replacement........................................................... 111 Parking Components Inspection....................................................... 111 Inhibitor Switch Adjustment......................................................... 112 Manual Control Linkage Adjustment................................................... 112 REMOVAL AND INSTALLATION................................................................ 113 Removal............................................................................. 113 Installation........................................................................ 115 MAJOR OVERHAUL.......................................................................... 116 Oil Channel......................................................................... 118 Locations of Needle Bearings, Thrust Washers and Snap Rings......................... 119 DISASSEMBLY............................................................................. 120 REPAIR FOR COMPONENT PARTS.............................................................. 132 Oil Pump............................................................................ 132 Control Valve Assembly.............................................................. 136 Control Valve Upper Body............................................................ 142 Control Valve Lower Body............................................................ 148 Reverse Clutch...................................................................... 150 High Clutch......................................................................... 154 Forward and Overrun Clutches........................................................ 156 Low & Reverse Brake................................................................. 160 Forward Clutch Drum Assembly........................................................ 164 Rear Internal Gear and Forward Clutch Hub........................................... 166 Band Servo Piston Assembly.......................................................... 168 Parking Pawl Components............................................................. 172 ASSEMBLY................................................................................ 174 Assembly (1)........................................................................ 174 Adjustment.......................................................................... 179 Assembly (2)........................................................................ 183 SERVICE DATA AND SPECIFICATIONS (SDS)................................................... 193 General Specifications.............................................................. 193 Specifications and Adjustment....................................................... 193 bf.......................................................................................... 197 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 197 GENERAL SERVICING....................................................................... 198 Precautions......................................................................... 198 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"............... 198 Circuit Breaker Inspection.......................................................... 198 Clip Fastener....................................................................... 199 BODY END................................................................................ 201 Body Front End...................................................................... 201 Body Rear End and Opener............................................................ 203 DOOR.................................................................................... 206 Front door.......................................................................... 206 Rear Door........................................................................... 207 INSTRUMENT PANEL........................................................................ 208 INTERIOR AND EXTERIOR................................................................... 210 Interior............................................................................ 210 Exterior............................................................................ 216 SEAT.................................................................................... 222 Front Seat.......................................................................... 222 Rear Seat........................................................................... 227 SUN ROOF................................................................................ 228 Wiring Diagram...................................................................... 229 WINDSHIELD AND WINDOWS.................................................................. 230 Windshield and Rear Window.......................................................... 230 Opera Window........................................................................ 231 MIRROR AND REAR AIR SPOILER............................................................. 232 Door Mirror......................................................................... 232 Rear Air Spoiler.................................................................... 233 BODY ALIGNMENT.......................................................................... 234 Engine Compartment.................................................................. 234 Underbody........................................................................... 236 SUPPLEMENTAL RESTRAINT SYSTEM (SRS)..................................................... 238 Precautions for SRS "Air Bag" and "Seat Belt Pre-tensioner" Service................. 238 Special Service Tools............................................................... 238 Commercial Service Tools............................................................ 238 Description......................................................................... 239 SRS Component Parts Location........................................................ 240 Caution Labels...................................................................... 241 Maintenance Items................................................................... 243 Removal and Installation - Control Unit, Sensors and Seat Belt Pre-tensioner........ 244 Removal - Air Bag Module and Spiral Cable........................................... 245 Removal - Front Passenger Air Bag Module............................................ 246 Installation - Air Bag Module and Spiral Cable...................................... 247 Installation - Front Passenger Air Bag Module....................................... 249 Scrapping Air Bag and Seat Belt Pre-tensioners...................................... 249 TROUBLE DIAGNOSTS - Supplemental Restraint System (SRS)................................. 252 Contents............................................................................ 252 br.......................................................................................... 264 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 264 PRECAUTIONS AND PREPARATION............................................................. 266 Precautions......................................................................... 266 Special Service Tools............................................................... 266 Commercial Service Tools............................................................ 266 CHECK AND ADJUSTMENT.................................................................... 267 Checking Brake Fluid Level.......................................................... 267 Checking Brake Line................................................................. 267 Changing Brake Fluid................................................................ 267 Bleeding Brake System............................................................... 267 BRAKE HYDRAULIC LINE/CONTROL VALVE...................................................... 268 Removal............................................................................. 268 Inspection.......................................................................... 268 Installation........................................................................ 268 Proportioning Valve................................................................. 269 BRAKE PEDAL AND BRACKET................................................................. 270 Removal and Installation............................................................ 270 Inspection.......................................................................... 270 Adjustment.......................................................................... 271 MASTER CYLINDER......................................................................... 272 Removal............................................................................. 272 Disassembly......................................................................... 272 Inspection.......................................................................... 273 Assembly............................................................................ 273 Installation........................................................................ 273 BRAKE BOOSTER........................................................................... 274 On-vehicle Service.................................................................. 274 Removal............................................................................. 274 Inspection.......................................................................... 274 Installation........................................................................ 275 VACUUM PIPING........................................................................... 276 Removal and Installation............................................................ 276 Inspection.......................................................................... 276 FRONT DISC BRAKE........................................................................ 277 Pad Replacement..................................................................... 277 Removal............................................................................. 278 Disassembly......................................................................... 278 Inspection - Caliper................................................................ 278 Inspection - Rotor.................................................................. 279 Assembly............................................................................ 279 Installation........................................................................ 279 REAR DISC BRAKE......................................................................... 280 Pad Replacement..................................................................... 280 Removal............................................................................. 281 Disassembly......................................................................... 281 Inspection - Caliper................................................................ 281 Inspection - Rotor.................................................................. 282 Assembly............................................................................ 282 Installation........................................................................ 282 Parking Drum Brake.................................................................. 283 PARKING BRAKE CONTROL................................................................... 286 Removal and Installation............................................................ 286 Inspection.......................................................................... 287 Adjustment.......................................................................... 287 ANTI-LOCK BRAKE SYSTEM - ABS -.......................................................... 288 System Components................................................................... 288 Hydraulic Circuit................................................................... 288 Wiring Diagram...................................................................... 289 Removal and Installation............................................................ 290 TROUBLE DIAGNOSES FOR ABS............................................................... 292 Contents............................................................................ 292 TRACTION CONTROL SYSTEM - TCS -......................................................... 313 Purpose of TCS...................................................................... 313 System Components................................................................... 314 Components for TCS Brake System..................................................... 315 Throttle Valve Control System for TCS............................................... 319 Engine + Brake TCS System Configuration............................................. 319 Component........................................................................... 320 Throttle Memory Function............................................................ 321 Secondary Throttle Fully-closed Position Self-learning Control...................... 321 Removal and Installation of TCS Actuator............................................ 322 Air Bleeding for TCS................................................................ 323 Removal and Installation of TCS Pump................................................ 323 Removal and Installation of Rear Wheel Sensor....................................... 324 Removal and Installation of TCM..................................................... 324 Removal and Installation of TCS Control Unit........................................ 325 Removal and Installation of Front Wheel Sensor...................................... 325 Removal and Installation of ABS Actuator............................................ 325 Removal and Installation of Throttle Motor.......................................... 325 Adjustment for Secondary Throttle Position Sensor................................... 326 TROUBLE DIAGNOSES FOR TCS............................................................... 327 Contents............................................................................ 327 SERVICE DATA AND SPECIFICATIONS (S.D.S.)................................................ 379 General Specifications.............................................................. 379 Inspection and Adjustment........................................................... 379 ec.......................................................................................... 380 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 380 PREPARATION AND PRECAUTIONS............................................................. 382 Special Service Tools............................................................... 382 Supplemental Restraint System "AIR GAG"............................................. 382 Engine Fuel & Emission Control System............................................... 383 ENGINE AND EMISSION CONTROL OVERALL SYSTEM.............................................. 384 ECCS Component Parts Location....................................................... 384 System Diagram...................................................................... 386 System Chart........................................................................ 387 Vacuum Hose Drawing................................................................. 388 Circuit Diagram..................................................................... 389 ENGINE AND EMISSION CONTROL PARTS DESCRIPTION........................................... 390 Engine Control Module (ECM)-ECCS Control Module..................................... 390 Camshaft Position Sensor (CMPS)..................................................... 390 Mass Air Flow Sensor (MAFS)......................................................... 390 Engine Coolant Temperature Sensor (ECTS)............................................ 391 Throttle Position Sensor (TPS) & Soft/Hard Closed Throttle Position (CTP) Switch.... 391 Secondary Throttle Position Sensor (TPS) (Models with TCS only)..................... 392 Fuel Injector....................................................................... 392 Fuel Pressure Regulator............................................................. 393 Fuel Pump........................................................................... 393 Heated Oxygen Sensor (HO2S)......................................................... 393 Fuel Pump Control Unit.............................................................. 393 Fuel Damper......................................................................... 394 Power Transistor Unit & Ignitiion Coil.............................................. 394 Fast Idle Cam (FIC)................................................................. 394 Air Cut Valve (Models with TCS only)................................................ 394 Idle Air Control Valve (IAVC)-Auxiliary Air Control (AAC) Valve..................... 395 Power Steering Oil Pressure Switch.................................................. 395 Vehicle Speed Sensor (VSS).......................................................... 395 Knock Sensor (KS)................................................................... 395 Exhaust Gas Recirculation (EGR) Valve............................................... 395 EGR Control (EGRC)-BPT Valve........................................................ 396 EGR Control (EGRC)-Solenoid Valve................................................... 396 Canister Control Solenoid Valve..................................................... 396 Fuel Filter......................................................................... 396 Data Link Connector for CONSULT..................................................... 396 EGR Temperature Sensor.............................................................. 397 Valve Timing Control (VTC) Solenoid Valve........................................... 397 Carbon Canister..................................................................... 397 ENGINE AND EMISSION CONTROL SYSTEM DESCRIPTION.......................................... 398 Multiport Fuel Injection (MFI) System............................................... 398 Electronic Ignition (EI) System..................................................... 401 Idle Air Control (IAC) System....................................................... 403 Fuel Pump Control................................................................... 404 Exhaust Gas Recirculation (EGR) System.............................................. 405 Canister Control.................................................................... 405 Acceleration Cut Control............................................................ 406 Valve Timing Control (VTC).......................................................... 406 Heated Oxygen Sensor (HO2S) Heater Control.......................................... 408 Cooling Fan Control (For U.S.A. models)............................................. 409 Cooling Fan Control (For Canada models)............................................. 409 Fail-safe System.................................................................... 410 Direct Ignition System.............................................................. 412 IDLE SPEED/IGNITION TIMING/IDLE MIXTURE RATIO INSPECTION................................ 414 TROUBLE DIAGNOSES....................................................................... 421 Contents............................................................................ 421 MULTIPORT FUEL INJECTION SYSTEM INSPECITON.............................................. 607 Releasing Fuel Pressure............................................................. 607 Fuel Pressure Check................................................................. 607 Injector Removal and Installation................................................... 608 EVAPORATIVE EMISSION SYSTEM............................................................. 609 Description......................................................................... 609 Inspection.......................................................................... 609 CRANKCASE EMISSION CONTROL SYSTEM....................................................... 611 Description......................................................................... 611 Inspection.......................................................................... 611 SERVICE DATA AND SPECIFICATIAONS (SDS).................................................. 612 General Specifications.............................................................. 612 Inspection and Adjustment........................................................... 612 el.......................................................................................... 613 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 613 PRECAUTIONS............................................................................. 615 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"............... 615 HARNESS CONNECTOR....................................................................... 616 Description......................................................................... 616 STANDARDIZED RELAY...................................................................... 617 Description......................................................................... 617 POWER SUPPLY ROUTING.................................................................... 620 Wiring Diagram...................................................................... 620 Fuse................................................................................ 622 Fusible Link........................................................................ 622 BATTERY................................................................................. 623 How to Handle Battery............................................................... 623 Service Data and Specifications (SDS)............................................... 625 STARTING SYSTEM......................................................................... 626 Construction........................................................................ 626 Removal and Installation............................................................ 626 Wiring Diagram...................................................................... 627 Service Data and Specifications (SDS)............................................... 627 CHARGING SYSTEM......................................................................... 628 Construction........................................................................ 628 Removal and Installation............................................................ 628 Wiring Diagram...................................................................... 629 Service Data and Specifications (SDS)............................................... 629 COMBINATION SWITCH...................................................................... 630 Combination Switch/Check............................................................ 630 Steering Switch/Check............................................................... 631 HEADLAMP................................................................................ 632 Schematic........................................................................... 632 Wiring Diagram...................................................................... 633 Operation (Daytime light system for Canada)......................................... 634 Schematic........................................................................... 634 Wiring Diagram...................................................................... 635 Bulb Replacement.................................................................... 636 Aiming Adjustment................................................................... 636 Headlamp Sensor Check............................................................... 637 EXTERIOR LAMP........................................................................... 638 Clearance, License, Tail and Stop Lamps/Wiring Diagram.............................. 638 Back-up Lamp/Wiring Diagram......................................................... 639 Front Fog Lamp/Wiring Diagram....................................................... 640 Turn Signal and Hazard Warning Lamps/Wiring Diagram................................. 641 Fog Lamp Aiming Adjustment.......................................................... 642 Stop and Tail Lamp Sensor Check..................................................... 642 Combination Flasher Unit Check...................................................... 642 Bulb Specifications................................................................. 643 INTERIOR LAMP........................................................................... 644 Illumination/Wiring Diagram......................................................... 644 Interior, Spot, Foot and Trunk Room Lamps/Wiring Diagram............................ 646 Courtesy Lamp/Wiring Diagram........................................................ 647 Illumination Control Switch Check................................................... 648 METER AND GAUGES........................................................................ 649 Combination Meter................................................................... 649 Speedometer, Tachometer, Temp. and Fuel Gauges/Wiring Diagram....................... 650 Inspection/Fuel Gauge and Water Temperature Gauge................................... 651 Inspection/Vehicle Speed Sensor Signal Circuit...................................... 652 Inspection/Tachometer............................................................... 653 Fuel Tank Gauge Unit Check.......................................................... 653 Fuel Warning Lamp Sensor Check...................................................... 654 Thermal Transmitter Check........................................................... 654 Oil Pressure Switch Check........................................................... 654 WARNING LAMPS AND CHIME................................................................. 655 Warning Lamps/Schematic............................................................. 655 Warning Lamps/Wiring Diagram........................................................ 656 Warning Chime/Wiring Diagram........................................................ 658 Diode Check......................................................................... 659 Warning Chime Check................................................................. 659 DIAGNOSTIC INFORMATION DISPLAY.......................................................... 660 Description......................................................................... 660 Self-check.......................................................................... 661 Wiring Diagram...................................................................... 662 Trouble Diagnoses................................................................... 664 LAN - SYSTEM DESCRIPTION................................................................ 673 System Diagram...................................................................... 673 Component Parts Location............................................................ 674 Circuit Diagram..................................................................... 675 Overall Description................................................................. 683 Sleep/Wake-up Control............................................................... 685 Fail-safe System.................................................................... 686 LAN - TROUBLE DIAGNOSES................................................................. 688 Work Flow........................................................................... 688 On-board Diagnosis.................................................................. 689 On-board Diagnosis - Mode I (LAN communication diagnosis)........................... 690 On-board Diagnosis - Mode II (Switch monitor)....................................... 693 On-board Diagnosis - Mode III (Power door lock operation)........................... 695 On-board Diagnosis - Mode IV (Power window monitor)................................. 697 On-board Diagnosis - Mode V (Automatic drive positioner operation).................. 699 Consult............................................................................. 701 LAN Communication Check............................................................. 704 POWER WINDOW - LAN...................................................................... 711 Component Parts and Harness Connector Location...................................... 711 Wiring Diagram...................................................................... 712 Schematic........................................................................... 714 Trouble Diagnoses................................................................... 715 POWER DOOR LOCK - LAN................................................................... 723 Component Parts and Harness Connector Location...................................... 723 Wiring Diagram...................................................................... 724 Schematic........................................................................... 726 Trouble Diagnoses................................................................... 727 AUTOMATIC DRIVE POSITIONER - LAN........................................................ 733 Component Parts and Harness Connector Location...................................... 733 Wiring Diagram...................................................................... 734 Schematic........................................................................... 736 Trouble Diagnoses................................................................... 737 POWER SEAT (FRONT RH) - LAN ............................................................ 756 Wiring Diagram...................................................................... 756 MULTI-REMOTE CONTROL SYSTEM - LAN....................................................... 757 Schematic........................................................................... 757 Wiring Diagram...................................................................... 758 Trouble Diagnoses................................................................... 760 Replacing Remote Controller or Control Unit......................................... 763 DOOR MIRROR - LAN....................................................................... 764 Wiring Diagram...................................................................... 764 Trouble Diagnoses................................................................... 765 TIME CONTROL SYSTEM - LAN............................................................... 771 Description......................................................................... 771 Wiring Diagram...................................................................... 772 Trouble Diagnoses................................................................... 774 THEFT WARNING SYSTEM - LAN.............................................................. 789 Component Parts and Harness Connector Location...................................... 789 Wiring Diagram...................................................................... 790 Description......................................................................... 792 Trouble Diagnoses................................................................... 793 STEP LAMPS - LAN........................................................................ 811 Wiring Diagram...................................................................... 811 Trouble Diagnoses................................................................... 812 ILLUMINATION - LAN...................................................................... 816 WIPER AND WASHER........................................................................ 817 Front Wiper and Washer/Wiring Diagram............................................... 817 Wiper Removal and Installation...................................................... 818 Wiper Arm Installation.............................................................. 818 Washer Nozzle Adjustment............................................................ 819 Wiper Amplifier Check............................................................... 819 HORN, CIGARETTE LIGHTER, CLOCK.......................................................... 820 Wiring Diagram...................................................................... 820 REAR WINDOW DEFOGGER.................................................................... 821 Wiring Diagram...................................................................... 821 Filament Check...................................................................... 822 Filament Repair..................................................................... 823 TELEPHONE............................................................................... 824 Telephone/Wiring Diagram............................................................ 824 AUDIO AND POWER ANTENNA................................................................. 826 Audio/Wiring Diagram................................................................ 826 Power Antenna/Wiring Diagram........................................................ 828 Location of Antenna................................................................. 828 Antenna Rod Replacement............................................................. 829 Window Antenna Repair............................................................... 830 AUTOMATIC SPEED CONTROL DEVICE (ASCD)................................................... 831 Component Parts and Harness Connector Location...................................... 831 Wiring Diagram...................................................................... 832 Trouble Diagnoses................................................................... 834 LOCATION OF ELECTRICAL UNITS............................................................ 851 Engine Compartment.................................................................. 851 Passenger Compartment............................................................... 852 Luggage Compartment................................................................. 853 Door................................................................................ 854 HARNESS LAYOUT.......................................................................... 855 Outline............................................................................. 855 Engine Room Harness................................................................. 856 Main Harness........................................................................ 858 Body Harness........................................................................ 861 Tail Harness........................................................................ 862 Engine Control Harness.............................................................. 864 Engine Control Sub-harness.......................................................... 866 Room Lamp Harness................................................................... 868 Air Bag Harness..................................................................... 868 Engine Harness...................................................................... 869 Door Harness (LH side).............................................................. 870 Door Harness (RH side).............................................................. 871 SPLICE LOCATION......................................................................... 872 How to Read Splice Location......................................................... 872 Engine Room Harness................................................................. 873 Main Harness........................................................................ 874 Body Harness........................................................................ 876 Tail Harness........................................................................ 877 Engine Control Harness.............................................................. 878 Room Lamp Harness................................................................... 878 Engine Control Sub-harness.......................................................... 879 Door Harness........................................................................ 880 GROUND DISTRIBUTION..................................................................... 882 SUPER MULTIPLE JUNCTION (SMJ)........................................................... 0 Terminal Arrangement................................................................ 1 em.......................................................................................... 894 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 894 PRECAUTIONS............................................................................. 895 Parts Requiring Angular Tightening.................................................. 895 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"............... 895 Liquid Gasket Application Procedure................................................. 895 PREPARATION............................................................................. 896 Special Service Tools............................................................... 896 Commercial Service Tools............................................................ 898 OUTER COMPONENT PARTS................................................................... 899 COMPRESSION PRESSURE.................................................................... 900 Measurement of Compression Pressure................................................. 900 OIL PAN................................................................................. 901 Removal............................................................................. 901 Installation........................................................................ 902 TIMING CHAIN............................................................................ 903 Removal............................................................................. 905 Inspection.......................................................................... 908 Installation........................................................................ 909 OIL SEAL REPLACEMENT.................................................................... 916 CYLINDER HEAD........................................................................... 918 Removal............................................................................. 919 Disassembly......................................................................... 919 Inspection.......................................................................... 919 Assembly............................................................................ 923 Installation........................................................................ 923 ENGINE REMOVAL.......................................................................... 924 Removal............................................................................. 925 CYLINDER BLOCK.......................................................................... 926 Disassembly......................................................................... 927 Inspection.......................................................................... 927 Assembly............................................................................ 933 SERVICE DATA AND SPECIFICATIONS (SDS)................................................... 936 General Specifications.............................................................. 936 Inspection and Adjustment........................................................... 936 fa.......................................................................................... 943 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS....................................................................... 943 PRECAUTIONS AND PREPARATION............................................................. 944 Precautions......................................................................... 944 Special Service Tools............................................................... 945 Comemrcial Service Tools............................................................ 946 FRONT AXLE AND FRONT SUSPENSION......................................................... 947 ON-VEHICLE SERVICE...................................................................... 948 Front Axle and Front Suspension Parts............................................... 948 Front Wheel Bearing................................................................. 951 Front Wheel Alignment............................................................... 951 FRONT AXLE.............................................................................. 953 Wheel Hub and Steering Knuckle...................................................... 953 FRONT SUSPENSION........................................................................ 957 Coil Spring and Shock Absorber...................................................... 958 Third Link and Upper Link........................................................... 959 Tension Rod and Stabilizer Bar...................................................... 961 Transverse Link and Lower Ball Joint................................................ 961 FULL-ACTIVE SUSPENSION.................................................................. 963 Outline............................................................................. 963 On-vehicle Service.................................................................. 965 Repair of Component Parts........................................................... 968 TROUBLE DIAGNOSES FOR FULL-ACTIVE SUSPENSION SYSTEM..................................... 991 Contents............................................................................ 991 SERVICE DATA AND SPECIFICATIONS (S.D.S.)................................................1053 General Sepcifications..............................................................1053 Inspection and Adjustment...........................................................1054 fe..........................................................................................1055 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1055 ACCELERATOR CONTROL SYSTEM..............................................................1056 Adjustng Accelerator Wire...........................................................1056 FUEL SYSTEM.............................................................................1057 EXHAUST SYSTEM..........................................................................1058 foldout.....................................................................................1059 QUICK REFERENCE INDEX................................................................... 0 ELECTRICAL SYSTEM....................................................................... 1 SUPER MULTIPLE JUNCTION (SMJ)...........................................................1059 Terminal Arrangement................................................................1060 1994 INFINITI Q45 CIRCUIT DIAGRAM.......................................................1061 ECCS WIRING DIAGRAM.....................................................................1070 FULL-ACTIVE SUSPENSION WIRING DIAGRAM...................................................1074 gi..........................................................................................1077 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1077 PRECAUTIONS.............................................................................1078 Precautions for Supplemental Restraint System "AIR BAG".............................1078 Precautions for "FULL-ACTIVE SUSPENSION"............................................1078 General Precautions.................................................................1078 Precautions for Multiport Fuel Injection System or ECCS Engine......................1080 Precautions for Three Way Catalyst..................................................1081 Precautions for Fuel................................................................1081 HOW TO USE THIS MANUAL..................................................................1082 HOW TO READ WIRING DIAGRAMS.............................................................1084 HOW TO FOLLOW FLOW CHART IN TROUBLE DIAGNOSES...........................................1089 CONSULT CHECKING SYSTEM.................................................................1092 Function and System Application.....................................................1092 Lithium Battery Replacement.........................................................1092 Checking Equipment..................................................................1092 IDENTIFICATION INFORMATION..............................................................1093 Model Variation.....................................................................1093 Identification Number...............................................................1094 Dimensions..........................................................................1095 Wheels and Tires....................................................................1095 LIFTING POINTS AND TOW TRUCK TOWING.....................................................1096 Garage Jack and Safety Stand........................................................1096 2-pole Lift.........................................................................1097 Tow Truck Towing....................................................................1097 TIGHTENING TORQUE OF STANDARD BOLTS.....................................................1099 SAE J1930 TERMINOLOGY LIST..............................................................1100 ha..........................................................................................1104 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1104 PRECAUTIONS.............................................................................1105 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"...............1105 Introduction........................................................................1106 Identification......................................................................1106 Precautions for Working With HFC-134a (R-134a)......................................1107 General Refrigerant Precautions.....................................................1107 Precautions for Refrigerant Connection..............................................1108 Precautions for Servicing Compressor................................................1109 DESCRIPTION - Overall System............................................................1110 Introduction........................................................................1110 Features............................................................................1110 Control Operation...................................................................1111 Component Layout....................................................................1113 Air Flow............................................................................1114 DESCRIPTION - Refrigeration System......................................................1115 Refrigeration Cycle.................................................................1115 V-6 Variable Displacement Compressor................................................1116 PREPARATION.............................................................................1120 HFC-134a (R-134a) Service Tools and Equipment.......................................1120 Precautions for Service Equipment...................................................1122 SERVICE PROCEDURES......................................................................1124 HFC-134a (R-134a) Service Procedure.................................................1124 Refrigeration Lines.................................................................1126 Compressor Mounting.................................................................1127 Belt Tension........................................................................1127 Engine Idling Speed (When A/C is ON)................................................1127 LUBRICATION OIL - Checking and Adjusting................................................1128 Lubrication Oil.....................................................................1128 Maintenance of Oil Quantity in Compressor...........................................1128 Checking and Adjusting..............................................................1128 DIAGNOSES - Overall System..............................................................1130 How to Perform Trouble Diagnoses for Quick and Accurate Repair......................1130 Operational Check...................................................................1131 Performance Chart...................................................................1134 Performance Test Diagnoses..........................................................1135 TROUBLE DIAGNOSES.......................................................................1141 Contents............................................................................1141 SYSTEM DESCRIPTION......................................................................1194 Overview of Control System..........................................................1194 Control System Input Components.....................................................1194 Control Automatic Amplifier (Auto amp.).............................................1199 Control System Output Components....................................................1200 SERVICE DATA AND SPECIFICATIONS (S.D.S.)................................................1211 General Specifications..............................................................1211 Inspection and Adjustment...........................................................1211 lc..........................................................................................1212 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1212 PRECAUTIONS AND PREPARATION.............................................................1213 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"...............1213 Liquid Gasket Application Procedure.................................................1213 Special Service Tools...............................................................1213 ENGINE LUBRICATION SYSTEM...............................................................1214 Lubrication Circuit.................................................................1214 Oil Pressure........................................................................1215 Oil Pump............................................................................1216 ENGINE COOLING SYSTEM...................................................................1218 Cooling Circuit.....................................................................1218 System Check........................................................................1218 Water Pump..........................................................................1219 Thermostat..........................................................................1221 Radiator............................................................................1223 Cooling Fan (Motor driven)..........................................................1224 SERVICE DATA AND SPECIFICATIONS (SDS)...................................................1225 Engine Lubrication System...........................................................1225 Engine Cooling System...............................................................1225 ma..........................................................................................1226 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1226 GENERAL MAINTENANCE.....................................................................1227 PERIODIC MAINTENANCE....................................................................1229 Schedule 1..........................................................................1230 Schedule 2..........................................................................1231 RECOMMENDED FLUIDS AND LUBRICANTS.......................................................1232 Fluids and Lubricants...............................................................1232 SAE Viscosity Number................................................................1232 ENGINE MAINTENANCE......................................................................1233 Checking Drive Belts................................................................1233 Changing Engine Coolant.............................................................1234 Checking Fuel Lines.................................................................1235 Changing Fuel Filter................................................................1235 Changing Air Cleaner Filter.........................................................1236 Changing Engine Oil.................................................................1236 Changing Oil Filter.................................................................1237 Changing Spark Plugs................................................................1237 Checking Vapor Lines................................................................1238 CHASSIS AND BODY MAINTENANCE............................................................1239 Checking Exhaust System.............................................................1239 Checking A/T Fluid..................................................................1239 Changing A/T Fluid..................................................................1239 Checking Differential Gear Oil......................................................1240 Changing Differential Gear Oil......................................................1240 Balancing Wheels....................................................................1240 Tire Rotation.......................................................................1240 Checking Brake Fluid Level and Leaks................................................1240 Checking Brake Lines and Cables.....................................................1240 Changing Brake Fluid................................................................1241 Checking Disc Brake.................................................................1241 Checking Steering Gear Linkage......................................................1241 Checking Power Steering Fluid and Lines.............................................1242 Checking SUPER HICAS Linkage (With SUPER HICAS system)..............................1242 Checking FULL-ACTIVE SUSPENSION Fluids and Lines....................................1242 Changing FULL-ACTIVE SUSPENSION Fluid ..............................................1243 Lubricating Locks, Hinges and Hood Latches..........................................1244 Checking Seat Belts, Buckles, Retractors, Anchors and Adjusters.....................1244 SERVICE DATA AND SPECIFICATIONS (SDS)...................................................1245 Engine Maintenance..................................................................1245 Chassis and Body Maintenance........................................................1245 pd..........................................................................................1246 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1246 PREPARATION.............................................................................1247 Special Service Tools...............................................................1247 Commercial Service Tools............................................................1249 PROPELLER SHAFT.........................................................................1250 On-vehicle Service..................................................................1250 Removal.............................................................................1250 Installation........................................................................1251 Inspection..........................................................................1252 Disassembly.........................................................................1252 Assembly............................................................................1253 ON-VEHICLE SERVICE/REMOVAL AND INSTALLATION.............................................1254 Front Oil Seal Replacement..........................................................1254 Side Oil Seal Replacement...........................................................1254 Removal.............................................................................1256 Installation........................................................................1256 DISASSEMBLY.............................................................................1257 Pre-inspection......................................................................1258 Differential Carrier................................................................1258 Differential Case...................................................................1260 INSPECTION..............................................................................1261 Ring Gear and Drive Pinion..........................................................1261 Bearing.............................................................................1261 Differential Case Assembly..........................................................1261 ADJUSTMENT..............................................................................1262 Side Bearing Preload................................................................1262 Pinion Gear Height and Pinion Bearing Preload.......................................1263 Tooth Contact.......................................................................1267 ASSEMBLY................................................................................1269 Differential Case...................................................................1269 Differential Carrier................................................................1270 SERVICE DATA AND SPECIFICATIONS (S.D.S.)................................................1274 Propeller Shaft.....................................................................1274 Final Drive.........................................................................1274 ra..........................................................................................1276 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1276 PRECAUTIONS AND PREPARATION.............................................................1277 Special Service Tools...............................................................1277 Commercial Service Tools............................................................1278 REAR AXLE AND REAR SUSPENSION...........................................................1279 ON-VEHICLE SERVICE......................................................................1280 Rear Axle and Rear Suspension Parts.................................................1280 Rear Wheel Bearing..................................................................1280 Rear Wheel Alignment................................................................1280 Drive Shaft.........................................................................1281 REAR AXLE...............................................................................1282 Removal.............................................................................1282 Wheel Hub and Axle Housing..........................................................1283 Drive Shaft.........................................................................1285 REAR SUSPENSION.........................................................................1290 Removal and Installation............................................................1291 Coil Spring and Shock Absorber......................................................1291 Multi-link and Lower Ball Joint.....................................................1293 Stabilizer Bar......................................................................1293 SUPER HICAS.............................................................................1294 Rear Wheel Alignment................................................................1294 Rear Axle Housing Lower Ball Joint..................................................1294 SERVICE DATA AND SPECIFICATIONS (SDS)...................................................1296 General Specifications..............................................................1296 Inspection and Adjustment...........................................................1297 st..........................................................................................1298 QUICK REFERENCE INDEX................................................................... 0 TABLE OF CONTENTS.......................................................................1298 PRECAUTIONS AND PREPARATION.............................................................1299 Supplemental Restraint System "AIR BAG" and "SEAT BELT PRE-TENSIONER"...............1299 Steering System.....................................................................1299 Special Service Tools...............................................................1299 Commercial Service Tools............................................................1300 ON-VEHICLE SERVICE......................................................................1301 Checking Steering Wheel Play........................................................1301 Checking Neutral Position on Steering Wheel.........................................1301 Front Wheel Turning Angle...........................................................1301 Checking Gear Housing Movement......................................................1301 Adjusting Rack Retainer.............................................................1302 Checking and Adjusting Drive Belts..................................................1302 Checking Fluid Level................................................................1302 Checking Fluid Leakage..............................................................1302 Bleeding Hydraulic System...........................................................1303 Checking Steering Wheel Turning Force...............................................1303 Checking Hydraulic System...........................................................1304 STEERING WHEEL AND STEERING COLUMN......................................................1305 Removal and Installation............................................................1305 Disassembly and Assembly............................................................1307 Inspection..........................................................................1308 POWER STEERING GEAR AND LINKAGE (Model PR26SE)..........................................1309 Removal and Installation............................................................1309 Disassembly.........................................................................1312 Inspection..........................................................................1312 Assembly............................................................................1313 Adjustment..........................................................................1318 POWER STEERING OIL PUMP - NORMAL SUSPENSION.............................................1320 Disassembly and Assembly............................................................1320 Pre-disassembly Inspection..........................................................1321 Disassembly.........................................................................1321 Inspection..........................................................................1322 Assembly............................................................................1322 POWER STEERING OIL PUMP - FULL-ACTIVE SUSPENSION........................................1324 Disassembly and Assembly............................................................1324 TWIN ORIFICE POWER STEERING SYSTEM......................................................1325 Hydraulic Circuit...................................................................1325 Schematic...........................................................................1325 Wiring Diagram......................................................................1326 Trouble Diagnoses...................................................................1327 SUPER HICAS SYSTEM......................................................................1336 HICAS Component Parts Location......................................................1336 System Description..................................................................1336 On-vehicle Service..................................................................1337 Repair for Component Parts - Power Cylinder.........................................1340 Repair for Component Parts - Oil Pump...............................................1344 Trouble Diagnoses...................................................................1350 SERVICE DATA AND SPECIFICATIONS (SDS)...................................................1379 General Specifications..............................................................1379 Inspection and Adjustment...........................................................1379
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DESCRIPTION:
1994 INFINITI Q45 G50 Series Service Manual PDF DOWNLOAD
FOREWORD
- This manual contains maintenance and repair procedures for the 1994 INFINITI 045.
- In order to assure your safety and the efficient functioning of the vehicle, this manual should be read thoroughly.
- It is especially important that the PRECAUTIONS In the GI section be completely understood before starting any repair task.
- All information in this manual is based on the latest product information at the time of publication. The right is reserved to make changes in specifications and methods at any time without notice. IMPORTANT SAFETY
Important Safety Notice:
- The proper performance of service is essential for both the safety of the technician and the efficient functioning of the vehicle.
- The service methods in this Service Manual are described in such a manner that the service may be performed safely and accurately.
- Service varies with the procedures used, the skills of the technician and the tools and parts available.
- Accordingly, anyone using service procedures, tools or parts which are not specifically recommended by INFINITI must first completely satisfy himself that neither his safety nor the vehicle’s safety will be jeopardized by the service method selected.
PLEASE NOTE:
- This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
- You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
- Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted
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