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.
2018 Infiniti QX80 AWDFACTORY OEM SERVICE PROCEDURE
Engine Control System (Diagnostics) (2 Of 2)
- Ecu Diagnosis Information
- Component/Circuit Diagnosis
- A/F Sensor 1
- A/F Sensor 1 Heater
- Accelerator Pedal Position Sensor
- ASCD Brake Switch
- ASCD Indicator
- ASCD Steering Switch
- Battery Current Sensor
- Battery Temperature Sensor
- Camshaft Position Sensor
- Condenser
- Cooling Fan Speed Sensor
- Crankshaft Position Sensor
- Electric Throttle Control Actuator
- Electrical Load Signal
- Electrically-Controlled Cooling Fan Coupling
- Engine Coolant Temperature Sensor
- Engine Coolant Temperature Sensor 2
- Engine Oil Temperature Sensor
- Engine Over Temperature
- EOP Sensor
- EVAP Canister Purge Volume Control Solenoid Valve
- EVAP Canister Vent Control Valve
- EVAP Control System Pressure Sensor
- Exhaust Valve Timing Control Position Sensor
- Exhaust Valve Timing Control Solenoid Valve
- FPCM
- Fuel Filler Cap
- Fuel Injector
- Fuel Injector Relay
- Fuel Level Sensor
- Fuel Pump Control Module
- Fuel Rail Pressure Sensor
- Fuel Tank Temperature Sensor
- High Pressure Fuel Pump
- High Pressure Fuel Pump Relay
- Ho2S2
- Ho2S2 Heater
- ICC Brake Hold Relay
- ICC Brake Switch
- ICC Steering Switch
- Ignition Coil With Power Transistor
- Ignition Signal
- Information Display (ASCD)
- Intake Air Temperature Sensor
- Intake Valve Timing Control Solenoid Valve
- Knock Sensor
- Low Pressure Fuel Pump
- Malfunction Indicator Lamp
- Mass Air Flow Sensor
- Multi-Way Control Valve
- On Board Refueling Vapor Recovery (ORVR)
- Park/Neutral Position Switch
- Power Steering Pressure Sensor
- Power Supply And Ground Circuit
- Refrigerant Pressure Sensor
- Sensor Power Supply 2 Circuit
- Sensor Power Supply 3 Circuit
- Stop Lamp Switch
- Throttle Control Motor
- Throttle Position Sensor
- Trouble Diagnosis - Specification Value
- VVEL Actuator Housing Assembly
- VVEL Actuator Motor
- VVEL Actuator Motor Relay
- Symptom Diagnosis
- Wiring Diagram
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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