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 Q50 Base, AWDFACTORY OEM SERVICE PROCEDURE
Vehicle Compartment
| Center of main muffler | Right side of main muffler | Behind of glove box | |||
| Behind of glove box | Left side of transmission | Upper left side of trunk room | |||
| Left side of trunk room |
| No. | Component | Function |
|---|---|---|
| Sub-battery relay | SUB-BATTERY RELAY | |
| Fuel pump | FUEL PUMP | |
| IPDM E/R | IPDM E/R controls the internal relays. When CAN communication with ECM is impossible, IPDM E/R performs fail-safe control. |
|
| Main battery current sensor (With main battery temperature sensor) | MAIN BATTERY CURRENT SENSOR (WITH MAIN BATTERY TEMPERATURE SENSOR) | |
| Cooling fan control module | COOLING FAN CONTROL MODULE | |
| Charge air cooler | SYSTEM DESCRIPTION | |
| Refrigerant pressure sensor | REFRIGERANT PRESSURE SENSOR | |
| Combination meter | COMPONENT LOCATION | |
| Fuel tank pressure sensor | Senses fuel tank pressure. | |
| EVAP canister | EVAP canister stores the generated fuel vapors in the sealed fuel tank to activated charcoals of EVAP canister when the engine is not operating or when refueling to the fuel tank. | |
| EVAP canister vent control valve | The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. This solenoid valve is used only for diagnosis, and usually remains opened. | |
| Resistor 2 | SYSTEM DESCRIPTION | |
| Resistor 1 | SYSTEM DESCRIPTION | |
| EMCM (Energy Management Control Module) | EMCM (ENERGY MANAGEMENT CONTROL MODULE) | |
| Fuel pressure sensor | FUEL PRESSURE SENSOR | |
| Engine restart bypass control relay | ENGINE RESTART BYPASS CONTROL RELAY | |
| EMCM relay | SYSTEM DESCRIPTION | |
| Ignition relay | SYSTEM DESCRIPTION | |
| Sub battery current sensor (With sub battery temperature sensor) | SUB BATTERY CURRENT SENSOR (WITH SUB BATTERY TEMPERATURE SENSOR) | |
| FPCM (Fuel Pump Control Module) | FPCM (FUEL PUMP CONTROL MODULE) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.