Understanding your 2012 Ford Fusion’s fuse box is crucial for diagnosing and resolving electrical issues. Fuses protect your vehicle’s electrical circuits from overloads, and knowing their locations and functions can save you time and money on repairs. This guide will detail the fuse box locations in your 2012 Ford Fusion, with a specific focus on the OBD2 fuse location, and provide diagrams to help you easily identify the correct fuses.
Your 2012 Ford Fusion is equipped with two distinct fuse boxes, each serving different electrical systems: the passenger compartment fuse panel and the power distribution box. Let’s explore each of these in detail.
Passenger Compartment Fuse Panel
The passenger compartment fuse panel is located inside the vehicle. This fuse box houses fuses that control many of the interior and convenience features of your Ford Fusion.
2012 Ford Fusion passenger compartment fuse box diagram
Here is a detailed fuse diagram for the passenger compartment fuse panel in your 2012 Ford Fusion:
| Fuse Number | Amperage | Description |
|---|---|---|
| 1 | 30A | Driver smart window motor |
| 2 | 15A | Brake on/off switch, Center high-mounted stop lamp |
| 3 | 15A | Not used (spare) |
| 4 | 30A | Passenger smart window motor |
| 5 | 10A | Keypad illumination, Brake shift interlock |
| 6 | 20A | Turn signal lamps, Stop lamps |
| 7 | 10A | Low beam headlamps (left) |
| 8 | 10A | Low beam headlamps (right) |
| 9 | 15A | Courtesy lamps |
| 10 | 15A | Backlighting, Puddle lamps |
| 11 | 10A | AWD module |
| 12 | 7.5A | Power outside mirrors |
| 13 | 5A | SYNC® module |
| 14 | 10A | Electronic finish panel (EFP) radio and climate control buttons module, Navigation display, Center information display, GPS module |
| 15 | 10A | Climate control |
| 16 | 15A | Not used (spare) |
| 17 | 20A | Door locks, Trunk release |
| 18 | 20A | Heated seats |
| 19 | 25A | Amplifier |
| 20 | 15A | On-board diagnostic connector (OBD2) |
| 21 | 15A | Fog lamps |
| 22 | 15A | Front sidemarker lamps, Park lamps, License plate lamp |
| 23 | 15A | High beam headlamps |
| 24 | 20A | Horn |
| 25 | 10A | Demand lamps/power saver relay |
| 26 | 10A | Instrument cluster battery power |
| 27 | 20A | Ignition switch |
| 28 | 5A | Radio crank sense circuit |
| 29 | 5A | Instrument cluster ignition power |
| 30 | 5A | Not used (spare) |
| 31 | 10A | Not used (spare) |
| 32 | 10A | Restraint control module |
| 33 | 10A | Not used (spare) |
| 34 | 5A | Not used (spare) |
| 35 | 10A | Rear park assist, Blind spot monitor system, Heated seats, AWD, Rear video camera |
| 36 | 5A | Passive anti-theft sensor (PATS) transceiver |
| 37 | 10A | Not used (spare) |
| 38 | 20A | Not used (spare) |
| 39 | 20A | Radio |
| 40 | 20A | Not used (spare) |
| 41 | 15A | Automatic dimming mirror, Moon roof, Compass, Ambient lighting |
| 42 | 10A | Electronic stability control, Electronic power assist steering |
| 43 | 10A | Rain Sensor |
| 44 | 10A | Fuel diode/Powertrain control module |
| 45 | 5A | Heated backlight and blower relay coil, Wiper washer |
| 46 | 7.5A | Occupant classification sensor (OCS) module, Passenger airbag off lamp |
| 47 | Circuit breaker MAXI | Power windows |
| 48 | Relay | Delayed accessory relay |
Locating the OBD2 Fuse: As highlighted in the table, fuse number 20 in the passenger compartment fuse panel is designated for the on-board diagnostic connector, commonly known as the OBD2 port. This fuse is crucial for powering the OBD2 port, which is used for vehicle diagnostics and emissions testing. If you are experiencing issues connecting your diagnostic scanner, checking this fuse should be one of your first steps.
Power Distribution Box
The power distribution box is situated in the engine compartment. This fuse box generally handles fuses for higher-current systems and engine-related components.
2012 Ford Fusion power distribution box diagram
Here’s a detailed fuse diagram for the power distribution box in your 2012 Ford Fusion:
| Fuse Number | Type | Amperage | Description |
|---|---|---|---|
| 1 | FLF/PAL 293 | 50A | Electronic power assist steering B+ |
| 2 | FLF/PAL 293 | 50A | Electronic power assist steering B+ |
| 3 | FMX/JCase | 40A | Powertrain control module (PCM) (relay 57 power) |
| 5 | FMX/JCase | 30A | Starter motor (relay 55 power) |
| 6 | FMX/JCase | 40A | Rear defrost (relay 53 power) |
| 8 | FMX/JCase | 40A | Anti-lock brake system (ABS) pump |
| 9 | FMX/JCase | 20A | Wiper washer |
| 10 | FMX/JCase | 30A | ABS valve |
| 16 | MINI | 15A | Transmission module [3.5L] |
| 17 | MINI | 10A | Alternator |
| 22 | FMX/JCase | 20A | Console power point |
| 23 | MINI | 10A | PCM – Keep alive power, Canister vent |
| 25 | MINI | 10A | A/C clutch (relay 43 power) |
| 28 | FLF/PAL 293 | 60A/80A | Cooling fan motor [2.5L & 3.0L / 3.5L] |
| 29 | FMX/JCase | 20A | Front power point |
| 30 | FMX/JCase | 30A | Fuel relay (relay 54 power) |
| 31 | FMX/JCase | 30A | Passenger power seat |
| 32 | FMX/JCase | 30A | Driver power seat |
| 33 | FMX/JCase | 20A | Moon roof motor power feed |
| 35 | FMX/JCase | 40A | Front A/C blower motor (relay 52 power) |
| 36 | Diode MINI | – | Fuel pump |
| 37 | Diode MINI | – | One-touch start |
| 38 | MINI | 10A | Heated side mirrors |
| 41 | Relay | – | Backup lamps |
| 43 | Relay | – | A/C clutch |
| 45 | MINI | 15A | Injectors |
| 46 | MINI | 15A | PCM |
| 47 | MINI | 10A | General powertrain components, A/C clutch relay, Backup lamps |
| 48 | MINI | 15A | Ignition coils |
| 49 | MINI | 15A/20A | Emissions related powertrain components [2.5L & 3.5L / 3.0L] |
| 52 | Relay | – | Blower motor relay |
| 53 | Relay | – | Rear defrost relay |
| 54 | Relay | – | Fuel relay |
| 55 | Relay | – | Starter relay |
| 57 | Relay | – | PCM relay |
By understanding the layout and function of both fuse boxes in your 2012 Ford Fusion, you can effectively troubleshoot electrical problems. Always refer to your vehicle’s owner’s manual for the most accurate and up-to-date information, and remember to replace fuses with the correct type and amperage to ensure the safety and proper function of your vehicle’s electrical system.
