Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2022 Infiniti QX55 EssentialFACTORY OEM SERVICE PROCEDURE
Engine Control System (1 Of 3)
- Precaution
- Preparation
- System Description
- Component Parts
- Component Location
- Accelerator Pedal Position Sensor
- ATR Actuator
- ATR Control Module
- Air Fuel Ratio (A/F) Sensor 1
- ASCD Steering Switch
- Battery Current Sensor (With Battery Temperature Sensor)
- Cooling Fan
- Crankshaft Position Sensor
- Direct Fuel Injector
- ECM
- Electric Intake Valve Timing Control Actuator
- Electric Intake Valve Timing Control Module
- Electric Throttle Control Actuator
- Engine Coolant Temperature Sensor
- Engine Oil Pressure Control Solenoid Valve
- Engine Oil Pressure Sensor
- Engine Oil Temperature Sensor
- EVAP Canister
- EVAP Canister Purge Volume Control Solenoid Valve
- EVAP Canister Vent Control Valve
- EVAP Control System Pressure Sensor
- Exhaust Camshaft Position Sensor
- Exhaust Valve Timing Control Solenoid Valve
- Fuel Level Sensor and Low Pressure Fuel Pump
- Fuel Pump Control Module
- Fuel Rail Pressure Sensor
- Fuel Tank Temperature Sensor
- Heated Oxygen Sensor 2
- High Pressure Fuel Pump
- ICC Steering Switch
- Ignition Coil With Power Transistor
- Intake Camshaft Position Sensor
- Intake Manifold Runner Control Valve
- Knock Sensor
- Malfunction Indicator lamp (MIL)
- Manifold Absolute Pressure Sensor
- Mass Air Flow Sensor (With Intake Air Temperature Sensor 1)
- Multi-way Control Valve
- Oil Pressure Warning Lamp
- Port Fuel Injector
- Refrigerant Pressure Sensor
- Reverse/Neutral Position Switch
- Stop Lamp Switch and Brake Pedal Position Switch
- Turbocharger
- Turbocharger Boost Sensor (With Intake Air Temperature Sensor 2)
- Variable Compression Ratio Actuator
- Variable Compression Ratio Control Module
- Structure And Operation
- System
- Engine Control System
- Active Torque Rod Control System
- Direct And Port Fuel Injection System
- Fuel Pressure Control
- Engine Oil Pressure Control System
- Electric Ignition System
- Intake Valve Timing Control
- Exhaust Valve Timing Control
- Idle Speed Control
- Intake Manifold Runner Control
- Turbocharger Boost Control
- Engine Protection Control At Low Engine Oil Pressure
- Air Conditioning Cut Control
- Cooling Fan Control
- Thermal Management Control
- Evaporative Emission System
- Power Generation Voltage Variable Control System
- Integrated Control Of Engine, CVT, And Abs
- VCR (Variable Compression Ratio) System
- Fuel Filler Cap Warning System
- Automatic Speed Control Device (ASCD)
- Oil Control System
- Warning Lamps/Indicator Lamps
- Warning/Indicator/Chime List
- Can Communication
- Operation
- On Board Diagnostic (OBD) System
- Diagnosis System (ECM)
- Diagnosis System (ATR Control Module)
- Component Parts
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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