Repair manual
Wiring diagrams
Infiniti Q45 III Repair Manual
Step-by-step repair and maintenance instructions for the Infiniti Q45 III (2001–2006): removal, installation, adjustment, diagnostics and parameter checks with illustrations.
88sections
993articles
ENManual language
- Precautions for Supplemental Restraint System (SRS) AIR BAG and SEAT BELT PRE-TENSIONER
- Precautions for Working with HFC-134a (R-134a)
- CONTAMINATED REFRIGERANT
- General Refrigerant Precautions
- Lubricant Precautions
- Precautions for Refrigerant Connection
- Precautions for Servicing Compressor
- RECOVERY/RECYCLING EQUIPMENT
- ELECTRONIC LEAK DETECTOR
- VACUUM PUMP
- MANIFOLD GAUGE SET
- SERVICE HOSES
- SERVICE COUPLERS
- REFRIGERANT WEIGHT SCALE
- CHARGING CYLINDER
- Precautions for Leak Detection Dye
- Special Service Tools
- HFC-134a (R-134a) Service Tools and Equipment
- REFRIGERANT FLOW
- FREEZE PROTECTION
- REFRIGERANT PRESSURE SENSOR
- PRESSURE RELIEF VALVE
- General
- LUBRICANT
- System Construction
- TRANSMISSION DATA AND TRANSMISSION ORDER
- AIR MIX DOOR CONTROL (AUTOMATIC TEMPERATURE CONTROL)
- FAN SPEED CONTROL
- INTAKE DOOR CONTROL
- OUTLET DOOR CONTROL
- MAGNET CLUTCH CONTROL
- DISPLAY SCREEN
- AUTO SWITCH (DRIVER SIDE)
- AUTO SWITCH (PASSENGER SIDE)
- TEMPERATURE DIAL (POTENTIO TEMPERATURE CONTROL) (DRIVER SIDE)
- TEMPERATURE DIAL (POTENTIO TEMPERATURE CONTROL) (PASSENGER SIDE)
- INTAKE SWITCH
- DEFROSTER (DEF) SWITCH
- OFF SWITCH
- MODE SWITCH (DRIVER SIDE)
- MODE SWITCH (PASSENGER SIDE)
- ECON (ECONOMY) SWITCH
- FAN SWITCH
- DUAL SWITCH
- FAIL-SAFE FUNCTION
- Auto Amp. Terminals and Reference Value
- AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER
- Power Supply and Ground Circuit for Auto Amp.
- Automatic Amplifier (Auto Amp.)
- Potentio Temperature Control (PTC)
- LAN System Circuit
- Mode Door Motor Circuit
- Component Parts
- Mode Door Motor
- Air Mix Door Motor Circuit
- Air Mix Door Motor
- Air Mix Door Motor PBR Circuit
- Intake Door Motor Circuit
- Intake Door Motor
- Blower Motor Circuit
- Automatic Mode
- Starting Fan Speed Control
- Blower Speed Compensation
- Brush-Less Motor
- Blower Motor
- Magnet Clutch Circuit
- Low Temperature Protection Control
- A/C Relay
- Insufficient Cooling
- Insufficient Heating
- Memory Function
- ECON (ECONOMY) Mode
- Ambient Sensor
- AMBIENT TEMPERATURE INPUT PROCESS
- In-Vehicle Sensor
- Aspirator
- SUNLOAD INPUT PROCESS
- Sunload Sensor
- Intake Sensor
- FUNCTION
- Discharging Refrigerant
- Components
- Coil
- Break-In Operation
- Checking for Refrigerant Leaks
- Checking System for Leaks Using the Fluorescent Leak Detector
- Dye Injection
- PRECAUTIONS FOR HANDLING LEAK DETECTOR
- CHECKING PROCEDURE
- Engine Idling Speed
- Belt Tension
- Wiring Diagrams and Trouble Diagnosis
- SELF-DIAGNOSTIC SYSTEM
- DIAGNOSTIC PROCEDURE FOR A/C SYSTEM
- DIAGNOSTIC PROCEDURE FOR MODE DOOR MOTOR
- DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR
- DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR PBR
- DIAGNOSTIC PROCEDURE FOR INTAKE DOOR MOTOR
- DIAGNOSTIC PROCEDURE FOR REAR VENTILATOR DOOR MOTOR
- DIAGNOSTIC PROCEDURE FOR REAR CONTROL SWITCH
- DIAGNOSTIC PROCEDURE FOR BLOWER MOTOR
- DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
- Test Condition
- Test Reading
- TROUBLE DIAGNOSIS FOR UNUSUAL PRESSURE
- DIAGNOSTIC PROCEDURE FOR INSUFFICIENT COOLING
- Self-diagnosis
- DIAGNOSTIC PROCEDURE FOR AMBIENT SENSOR
- DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR
- In-Vehicle Sensor
- DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR
- DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
- DIAGNOSTIC PROCEDURE FOR MULTIPLEX COMMUNICATION CIRCUIT (FRONT CONTROLLER)
- DIAGNOSTIC PROCEDURE FOR MULTIPLEX COMMUNICATION CIRCUIT (REAR CONTROL SWITCH)
- Inspection
- FAIL-SAFE MODE
- CANCEL OF FAIL-SAFE MODE
- MEMORY STORING
- Work Flow
- SETTING CHANGE FUNCTION
- CONSULT-II Function
- COMMUNICATION SYSTEM A
- COMMUNICATION SYSTEM B
- COMMUNICATION SYSTEM C
- Display Item List
- Auto Drive Positioner Incident Memory
- SWITCH MONITOR
- Cancel Of Switch Monitor — Part 1
- Cancel Of Switch Monitor — Part 2
- Alphabetical Index
- Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
- METHOD FOR ERASING THE EEPROM IN THE TCM
- CHECK METHOD
- Cope for abnormal
- Special Service Tools
- Shift Mechanism
- "N" Position
- TCM Function
- CONTROL SYSTEM OUTLINE
- LINE PRESSURE CONTROL IS BASED ON THE TCM LINE PRESSURE CHARACTERISTIC PATTERN
- Normal Control
- Back-Up Control (Engine Brake)
- During Shift Change
- Shift Control
- SHIFT CHANGE
- Lock-Up Control
- Lock-Up Released
- Lock-Up Applied
- SMOOTH LOCK-UP CONTROL
- Half-Clutched State
- Slip Lock-Up Control
- OBD-II Function for A/T System
- ONE TRIP DETECTION LOGIC
- TWO TRIP DETECTION LOGIC
- Freeze Frame Data and 1st Trip Freeze Frame Data
- FAIL-SAFE FUNCTION
- Vehicle Speed Sensor
- Accelerator Pedal Position Sensor
- Throttle Position Sensor
- PNP Switch
- PNP Relay
- A/T Interlock
- A/T 1st Engine Braking
- Line Pressure Solenoid
- Low Coast Brake Solenoid
- Input Clutch Solenoid
- Direct Clutch Solenoid
- Front Brake Clutch Solenoid
- High and Low Reverse Clutch Solenoid
- Turbine Revolution Sensor 1 or 2
- WORK FLOW
- Information From Customer
- Check Before Engine is Started
- Check at Idle
- CONSULT-II
- CONSULT-II Setting Procedure
- Possible Cause
- WITH GST
- Judgement of A/T Interlock
- MANUAL MODE SWITCH
- SHIFT LOCK SOLENOID
- DETENTION SWITCH
- Key Lock
- Key Unlock
- 3rd One-Way Clutch
- Front Sun Gear Snap Ring
- Front Sun Gear
- Front Carrier Snap Ring
- Input Clutch Snap Ring
- Input Clutch Drum
- Input Clutch Drive Plates
- Input Clutch Retaining Plates and Driven Plates
- Front Carrier
- Rear Internal Gear
- High and Low Reverse Clutch Hub Snap Ring, Rear Sun Gear Snap Ring
- 1st One-Way Clutch
- Mid Sun Gear
- Rear Sun Gear
- High and Low Reverse Clutch Hub
- High and Low Reverse Clutch Snap Ring
- High and Low Reverse Clutch Drive Plates
- High and Low Reverse Clutch Retaining Plates and Driven Plates
- Direct Clutch Snap Ring
- Direct Clutch Drive Plates
- Direct Clutch Retaining Plates and Driven Plates
- DTC No. Index
- Precautions for On Board Diagnostic (OBD) System of A/T and Engine
- OBD-II SELF-DIAGNOSIS
- Wiring Diagrams and Trouble Diagnosis
- HOW TO READ DTC AND 1ST TRIP DTC
- HOW TO ERASE DTC
- HOW TO ERASE DTC (WITH CONSULT-II)
- HOW TO ERASE DTC (WITH GST)
- HOW TO ERASE DTC (NO TOOLS)
- DTC Inspection Priority Chart
- Fail-Safe
- Cruise test Part 1
- Cruise test Part 2
- Cruise test Part 3
- Symptom Chart
- TCM INSPECTION TABLE
- OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
- OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)
- Diagnostic Procedure
- Judgement Self-Diagnosis Code
- Erase Self-Diagnosis
- On Board Diagnosis Logic
- DTC Confirmation Procedure — Part 1
- DTC Confirmation Procedure — Part 2
- A/T CHECK Indicator Lamp Does Not Come On SYMPTOM
- SYMPTOM
- SHIFT LOCK CONTROL UNIT INSPECTION TABLE
- INSPECTION
- BASIC INSPECTION 1: BRAKE FLUID LEVEL AND LEAK INSPECTION
- BASIC INSPECTION 2: INSPECTION FOR LOOSENESS OF POWER SYSTEM TERMINALS
- BASIC INSPECTION 3: INSPECTION OF ABS WARNING LAMP, VDC OFF INDICATOR LAMP, AND SLIP INDICATOR LAMP
- INSPECTION PROCEDURE
- Inspection 2 Engine System
- Inspection 3 VDC/TCS/ABS Control Unit System
- Inspection 4 Pressure Sensor and Circuit Between Pressure Sensor and VDC/TCS/ABS Control Unit
- Inspection 5 Steering Angle Sensor and Circuit Between Steering Angle Sensor and VDC/TCS/ABS Control Unit
- Inspection 6 Yaw Rate/Side G-Sensor and Circuit Between Yaw Rate/Side G-Sensor and VDC/TCS/ABS Control Unit
- Inspection 7 Solenoid, VDC Switching Valve, and Circuits
- Inspection 8 Actuator Motor, Motor Relay, and Circuit
- Inspection 9 Actuator Relay and Circuit
- Inspection 10 Stop Lamp Switch and Circuit
- Inspection 11 VDC/TCS/ABS Control Unit Power Circuit
- Inspection 12 When "SHIFT POSITION ERROR" Appears in Self-Diagnosis Results Display
- Inspection 13 When "EMERGENCY BRAKE" Appears on Self-Diagnosis Results Display
- Inspection 14 When "STEERING ANGLE SENSOR HAS NOT BEEN CORRECTED" Appears on Self-Diagnosis Results Display
- Inspection 15 Brake Fluid Level in Reservoir Tank, Communication Circuit Between VDC/TCS/ABS Control Unit and Brake Fluid Level Sensor
- Inspection 16 CAN Communications Lines, VDC/TCS/ABS Control Unit and Steering Angle Sensor System
- Symptom 1 ABS Works Frequently.
- Symptom 2 Unexpected Pedal Reaction
- Symptom 3 Long Stopping Distance
- Symptom 4 ABS Does Not Work.
- Symptom 5 Pedal Vibration and Noise
- Symptom 6 VDC OFF Indicator Lamp Does Not Illuminate.
- Symptom 7 SLIP Indicator Lamp Does Not Illuminate.
- Removal & Installation (FX35, FX45, G35, M45 & Q45)
- Removal & Installation (FX35 & G35)
- Removal & Installation (FX45)
- Removal & Installation (M45)
- Removal (Q45)
- Removal (FX45, M45 & Q45)
- Removal (FX35 & G35)
- Removal & Installation (FX35)
- Removal & Installation (G35)
- Removal & Installation (Q45)
- Removal & Installation (Q45 & M45)
- Removal & Installation (FX35 & FX45)
- Removal & Installation (M45 & Q45)
- Removal & Installation (FX45, M45 & Q45)
- Removal & Installation (G35, FX35, FX45, M45 & Q45)
- Removal & Installation (FX35, FX45 & G35)
- Removal (FX35 & FX45)
- Removal (G35)
- Removal (M45 & Q45)
- Removal (FX45)
- Removal (FX35, FX45 & G35)
- ON-BOARD DIAGNOSTICS
- TESTING PROCEDURE
- Using Scan Tool
- Diagnostic Test Mode II (Self-Diagnostic Results)
- Diagnostic Test Mode II (Front HO2S Monitor)
- Entering Diagnostic Test Mode II (Self-Diagnostic Results Mode)
- Entering Diagnostic Test Mode II (Front HO2S Monitoring)
- CLEARING DIAGNOSTIC TROUBLE CODES
- Using Generic Scan Tool
- SYSTEM READINESS TEST
- Entering Diagnostic Test Modes
- Active Test Mode
- GENERIC SCAN TOOL
- Mode 1: Readiness Test
- Mode 3: Diagnostic Trouble Codes (DTCs)
- Mode 8: EVAP System Testing
- DIAGNOSTIC TROUBLE CODE DEFINITIONS
- DTC Confirmation Test "A"
- DTC Confirmation Test "B"
- Diagnostic Procedure
- DTC Confirmation Test (Using CONSULT-II)
- DTC Confirmation Test (Using Generic Scan Tool)
- DTC Confirmation Test "B" (Using CONSULT-II)
- DTC Confirmation Test "B" (Using Generic Scan Tool)
- DTC Confirmation Test "C"
- DTC Confirmation Test "D" (Using CONSULT-II)
- DTC Confirmation Test "D" (Using Generic Scan Tool)
- Possible Causes (DTC P0117 Or P0118)
- Possible Causes (DTC P0125)
- DTC Confirmation Test "A", "B" & "C"
- Diagnostic Procedure "A", "B" & "C"
- DTC Confirmation Test
- Possible Causes (DTC P0442)
- Possible Causes (DTC P0455 Or P1442)
- Diagnostic Procedure (DTC P0442)
- Diagnostic Procedure (DTC P0455 Or P1442)
- DTC Confirmation (Using Generic Scan Tool)
- DTC Confirmation Test "A" & "B"
- DTC Confirmation Test "A" (Using CONSULT-II)
- DTC Confirmation Test "A" (Using Generic Scan Tool)
- PRECAUTIONS FOR DISCONNECTING FUEL PIPING
- SPECIAL SERVICE TOOLS
- Power Steering Oil Pump Belt
- Alternator, Water Pump and A/C Compressor Belt
- CHANGING AIR CLEANER FILTER
- Surface Distortion
- Connecting Water Hose
- Connecting Vacuum Hose
- Connecting Quick Connector of Fuel Tube
- Exhaust Manifold Gasket
- Check on Fuel Leakage
- Outer Diameter of Camshaft Journal
- Inner Diameter of Camshaft Bracket
- Calculation of Camshaft Journal Clearance
- Valve Lifter and Adjusting Shim
- Outer Diameter of Valve Lifter
- Valve Lifter Hole Diameter
- Calculation of Valve Lifter Clearance
- VALVE GUIDE CLEARANCE
- VALVE SPRING SQUARENESS
- VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
- Outline
- HOW TO SELECT PISTON
- HOW TO SELECT CONNECTING ROD BEARING
- Undersize Bearings Usage Guide
- HOW TO SELECT MAIN BEARING
- Use Undersize Bearing Usage Guide
- Inner Diameter of Piston Pin
- Outer Diameter of Piston Pin
- Piston and Piston Pin Clearance
- CONNECTING ROD BEARING (BIG END)
- Inner Diameter of Connecting Rod (Small End)
- Connecting Rod Bushing Oil Clearance (Small End)
- Piston to Cylinder Bore Clearance
- Reboring Cylinder Bore
- OUTER DIAMETER OF CRANKSHAFT JOURNAL
- OUTER DIAMETER OF CRANKSHAFT PIN
- Method of Measurement
- Engine Performance Diagnostic Routine Outline - General Information
- Engine Performance Safety Precautions
- Parasitic Load Explanation & Test Procedures - General Information 2
- Waveforms - Injector Pattern Tutorial - General Information 2
- Electrostatic Discharge Warning - General Information
- State Emission Standards - Diesel
- Diagnostic Trouble Code Definitions - General Information
- Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
- Precautions for NVIS/IVIS (NISSAN/INFINITI VEHICLE IMMOBILIZER SYSTEM - NATS) (If Equipped)
- Precautions for Three Way Catalyst
- Precautions for Fuel (Unleaded Premium Gasoline Required)
- Precautions for Multiport Fuel Injection System or Engine Control System
- Precautions for Engine Oils
- HEALTH PROTECTION PRECAUTIONS
- ENVIRONMENTAL PROTECTION PRECAUTIONS
- Precautions for Air Conditioning
- Terms
- Units
- CONNECTOR SYMBOLS
- Component Indication
- Switch Positions
- Detectable Lines and Non-Detectable Lines
- Multiple Switch
- CONNECTOR AND TERMINAL PIN KIT
- HOW TO PROBE CONNECTORS
- MALE TERMINAL
- How to Check Enlarged Contact Spring of Terminal
- SENSORS & RELAYS
- ENGINE COMPARTMENT
- BEHIND THE INSTRUMENT PANEL
- UNDER SEATING AREAS
- Heat Sensitive
- Freezing
- Water Intrusion
- Electrical Load
- Cold or Hot Start Up
- CONTINUITY CHECK METHOD
- VOLTAGE CHECK METHOD
- RESISTANCE CHECK METHOD
- Voltage Drop Tests
- MEASURING VOLTAGE DROP - ACCUMULATED METHOD
- MEASURING VOLTAGE DROP - STEP-BY-STEP
- Checking Equipment
- Special Service Tools
- Garage Jack and Safety Stand
- 2-Pole Lift
- Board-On Lift
- Tow Truck Towing
- Vehicle Recovery (Freeing a Stuck Vehicle)
- Recommended Chemical Products and Sealants
- SAE J1930 Terminology List
- POWER SUPPLY AND GROUND
- OPERATING PROCEDURE
- HAZARD AND HORN REMINDER
- OPERATING FUNCTION OF HAZARD AND HORN REMINDER
- Hazard And Horn Mode
- Hazard Only Mode
- Work Flow
- CONSULT-II Function
- COMMUNICATION SYSTEM A
- COMMUNICATION SYSTEM B
- COMMUNICATION SYSTEM C
- Switch Monitor Item
- Cancel of Switch Monitor
- Check Electronic Key
- Check Trunk Lid Opener Actuator
- Check Hazard Function
- Check Horn Function
- Check Headlamp Function
- Check Map Lamp Function
- CHECK ELECTRONIC KEY BATTERY
- PROCEDURE 2 (WITH CONSULT-II)
- PRECAUTION OF LCD MONITOR
- Power Is Supplied At All Times
- When Ignition Switch is in ACC or ON Position, Power is Supplied
- When Ignition Switch is in ON or START Position, Power is Supplied
- Ground is Supplied
- AV COMMUNICATION LINE
- VEHICLE INFORMATION SYSTEM
- SETTING OF VEHICLE STATUS
- WARNING INDICATIONS
- AUTO CLIMATE CONTROL
- REARVIEW CAMERA
- SELF-DIAG RESULTS
- VERSION
- NO A/C Display is Shown
- Multifunction Switch Does Not Operate
- Multifunction Switch Indicator Does Not illuminate
- Wring Diagram - INF/D
- Terminals and Reference Value for AV and NAVI Control Unit
- CONSULT-II Function
- Power Supply and Ground Circuit Check for AV and NAVI Control Unit
- Setting the Vehicle Security System
- Canceling the Set Vehicle Security System
- Power is Supplied at All Times
- With the Ignition Switch in the ACC or ON Position, Power is Supplied
- With the Ignition Switch in the ON or START Position, Power is Supplied
- INITIAL CONDITION TO ACTIVATE THE SYSTEM
- VEHICLE SECURITY SYSTEM ACTIVATION (WITH KEY OR ELECTRONIC KEY USED TO LOCK DOORS)
- VEHICLE SECURITY SYSTEM DEACTIVATION
- Preliminary Check