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 Room Compartment
| Fuse and fusible link block 1 | Battery under side | Engine room center | |||
| : Vehicle front |
| No. | Component | Function |
|---|---|---|
| Pressure sensor downstream of air filter | PRESSURE SENSOR DOWNSTREAM OF THROTTLE VALVE | |
| Intake camshaft valve lift switchover | INTAKE CAMSHAFT VALVE LIFT SWITCHOVER | |
| ECM | ECM | |
| Decoupling relay | The decoupling relay is controlled by BCM and changes power supply circuit of on-board electrical system while restart the engine. (stop/start system) For the details of the control, refer to SYSTEM DESCRIPTION . |
|
| Starter relay | The decoupling relay is controlled by ECM and supplies battery voltage to starter motor. For the details of control, refer to SYSTEM DESCRIPTION . | |
| Motor relay | The motor relay is controlled by ECM and supplies battery voltage to ECU, actuator, sensor, and etc. | |
| Water pump relay | The water pump relay is controlled by ECM and supplies battery voltage to water pump. For the details of the control. | |
| EVAP purge control valve | EVAP PURGE CONTROL VALVE | |
| EVAP control system pressure sensor | The EVAP control system pressure sensor detects pressure in the purge line. |
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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