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

System Diagram

Courtesy of NISSAN NORTH AMERICA, INC.

Component parts	Function
Crankshaft position sensor	Crankshaft Position Sensor
Exhaust camshaft position sensor	Exhaust Camshaft Position Sensor
Engine oil temperature sensor	Engine Oil Temperature Sensor
Engine coolant temperature sensor 1	Engine Coolant Temperature Sensor
Exhaust valve timing control solenoid valve	Exhaust Valve Timing Control Solenoid Valve
Combination meter	ECM receives vehicle speed signal via CAN communication.
ECM	ECM

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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