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.
2016 Infiniti QX50 AWDFACTORY OEM SERVICE PROCEDURE
System Diagram
| 1. | ECM | 2. | Can communication | 3. | VVEL control module |
| 4. | EVAP canister purge volume control solenoid valve | 5. | EVAP service port | 6. | EVAP canister vent control valve |
| 7. | EVAP control system pressure sensor | 8. | EVAP canister | 9. | Battery current sensor |
| 10. | Battery | 11. | Fuel tank temperature sensor | 12. | Fuel level sensor |
| 13. | Fuel tank | 14. | Fuel pressure regulator | 15. | Fuel pump |
| 16. | Three way catalyst 2 | 17. | Heated oxygen sensor 2 | 18. | Three way catalyst 1 |
| 19. | Engine oil temperature sensor | 20. | A/F sensor 1 | 21. | Spark plug |
| 22. | PCV valve | 23. | Ignition coil (with power transistor) | 24. | VVEL actuator motor |
| 25. | VVEL control shaft position sensor | 26. | Intake valve timing control solenoid valve | 27. | Camshaft position sensor (PHASE) |
| 28. | Fuel damper | 29. | Engine coolant temperature sensor | 30. | Knock sensor |
| 31. | Crankshaft position sensor (POS) | 32. | Muffler | 33. | Cooling fan control module |
| 34. | Cooling fan | 35. | Air cleaner | 36. | Mass air flow sensor (with intake air temperature sensor) |
| 37. | Electric throttle control actuator | 38. | Throttle position sensor | 39. | Manifold absolute pressure (MAP) sensor |
| 40. | Brake booster pressure sensor | 41. | MIL | 42. | Ignition switch |
| 43. | Accelerator pedal position sensor | 44. | Power steering pressure sensor | 45. | Refrigerant pressure sensor |
| 46. | PNP signal |
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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