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.
2017 Infiniti QX30 BaseFACTORY OEM SERVICE PROCEDURE
Engine Compartment (Top View)
| No. | Component | Function |
|---|---|---|
| Coolant pump switchover valve | COOLANT PUMP SWITCHOVER VALVE | |
| Charge air temperature sensor downstream of throttle valve | CHARGE AIR TEMPERATURE SENSOR DOWNSTREAM OF THROTTLE VALVE | |
| Pressure sensor upstream of throttle valve | PRESSURE SENSOR UPSTREAM OF THROTTLE VALVE | |
| Charge air temperature sensor upstream of throttle valve | CHARGE AIR TEMPERATURE SENSOR UPSTREAM OF THROTTLE VALVE | |
| Throttle valve actuator | THROTTLE VALVE ACTUATOR | |
| Partial load operation crankcase ventilation valve | The partial load operation crankcase ventilation valve is usually open, and blow-by gas is sucked into the boost air distributor pipe from the oil separator. During deceleration, the partial load operation crankcase ventilation valve is closed according to a signal from ECM. This stops blow-by gas flown from crankcase to intake air system and reduces noise. | |
| Pressure sensor downstream of throttle valve | PRESSURE SENSOR DOWNSTREAM OF THROTTLE VALVE | |
| Boost pressure control vacuum transducer | BOOST PRESSURE CONTROL VACUUM TRANSDUCER |
Factory Service Tools
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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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