2009 F150 Fuse Box Diagram: Exploring the Fuse Boxes
2009 F150 Fuse Box Diagram: Find the correct fuse for the circuit you’re working on
The 2009 F150 fuse box diagram and the entire fuse setup for the 2009 F150 are completely different from the preceding years. In 2009, Ford began using two fuse boxes: an under-hood fuse box called the Battery Junction Box/Power Distribution Box and a passenger compartment fuse box called the Smart Junction Box/Passenger Compartment Fuse Panel. The passenger compartment Smart Junction Box is a precursor to what we now call a Body Control Module (BCM). In previous model years, Ford used a rudimentary BCM called a Generic Electronics Module (GEM). The GEM module controlled all the lights, door sensors, windshield wipers, and keyless entry.
In 2009, the GEM module got a new name
Starting in 2009, Ford changed the name of the GEM module to the Smart Junction Box and began mounting fuses for the controlled devices into it. In later years, Ford finally changed the name to the BCM.
The 2009 F150’s passenger compartment fuse box is under the instrument panel’s passenger side. The under-hood fuse box is called the Power Distribution Box or the Battery Junction Box (BJB). It is a rectangular box mounted in the center of the vehicle, under the hood, and above the radiator.
To learn more about automotive fuses, see this article
To learn how to check a fuse visually or without removing it, see this article
Find the most commonly replaced fuses and bulbs here
The fuse box diagram and table below show all 71 fuses and all the relays. But most DIYers are looking for fuses and relays for the lights, power ports, and the blower motor. I’ve listed the most commonly checked/replaced fuses here to save time. I’ve also listed the most commonly replaced bulbs. A blown fuse or bulb are the two most common reasons for lighting issues
• Backup Light: Fuse #39 (BJB) 10A, Bulb #3156 flareside, #921 styleside
• Blower Motor: Fuse #51 30A (BJB)
• Headlight Low Beam Passenger Side: Fuse #8 10A (SJB), Bulb #H13 (dual filament for high and low beams)
• Headlight Low Beam Driver’s Side: Fuse #7 10A (SJB), Bulb #H13 (dual filament for high and low beams)
• Headlights High Beam: Fuse #23 15A (SJB), Bulb #H13 (dual filament for high and low beams)
• Horn: Fuse #24 20A (SJB)
• Parking lamps: Fuse #22 15A (SJB), Front park turn bulb #3157A (amber)
• Power Ports: Rear: Fuse #72 20A (BJB), Instrument Panel: Fuse #65 20A (BJB), Cigar Lighter #22 20A (BJB), Center Console #66 20A (BJB), Overhead #18 10A
• Stop and Turn lights: Fuse #6 20A (SJB), Bulb #4057 Styleside, #3057 Flareside
2009 F150 Fuse Box Diagram for Battery Junction Box/Power Distribution Box
The power distribution box/ battery junction box is located in the engine compartment, in the center, and above the radiator. The junction box houses the high-current fuses and relays that protect and operate your vehicle’s main electrical systems.
How to find your fuse and the devices served by that fuse
There are 82 fuse slots and relay slots in the underhood power distribution box. The chart shows only 10 to speed up load time. Here’s how to find the fuse and circuit you want.
1) Change the number of entries showing (in the Show Entries Box) to 100 and scroll the list.
2) Enter the name of the component you’re searching for in the Search box.
3) Use the Next/Previous buttons at the bottom of the table
| Fuse number | Amperage | Circuits protected |
|---|---|---|
| F1 | — | Powertrain Control Module (PCM) power relay |
| F2 | — | Starter rela |
| F3 | — | Blower motor relay |
| F4 | — | Heated backlite relay |
| F5 | — | Not used |
| F6 | — | Trailer tow park lamp relay |
| F7 | — | Not used |
| F8 | — | Fuel pump Relay |
| F9 | — | Trailer tow battery charger Relay |
| F10 | — | Not used |
| F11 | 30 | Power running board motors |
| F12 | — | Not used |
| F13 | 30 | Starter relay |
| F14 | Passenger power seats | |
| F15 | — | Not used |
| F16 | — | Not used |
| F17 | 30 | Trailer brake |
| F18 | — | Not used |
| F19 | — | Not used |
| F20 | 20 | 4x4 module |
| F21 | 30 | Trailer tow battery charge |
| F22 | 20 | Cigar lighter |
| F23 | — | A/C clutch relay |
| F24 | — | Not used |
| F25 | — | Not used |
| F26 | 10 | PCM – keep alive power, Canister vent solenoid, Transmission, PCM relay |
| F27 | 20 | Fuel pump relay |
| F28 | — | Not used |
| F29 | 10 | 4x4 |
| F30 | 10 | A/C clutch |
| F31 | 20 | Trailer tow park lamp relay |
| F32 | 40 | Heated backlite/mirror relay |
| F33 | — | Not used |
| F34 | 40 | PCM relay |
| F35 | — | Not used |
| F36 | 30 | Roll stability control module (RSC) |
| F37 | — | Trailer tow left hand stop/turn relay |
| F38 | — | Trailer tow right hand stop/turn relay |
| F39 | — | Back up lamps relay |
| F40 | — | Not used |
| F41 | — | Not used |
| F42 | — | Not used |
| F43 | 20 | Backup lamp relay |
| F44 | — | Not used |
| F45 | 20 | Trailer tow stop turn relay feed |
| F46 | 15 | Brake on/off (BOO) switch |
| F47 | 60 | Roll stability control module (RSC) |
| F48 | — | Not used |
| F49 | 30 | Wiper motor, washer pump |
| F50 | — | Not used |
| F51 | 40 | Blower motor relay |
| F52 | — | Not used |
| F53 | 5 | PCM, 6R80 transmission |
| F54 | 5 | 4x4 module, Back up lamp, RSC, Trailer tow battery charge relay |
| F55 | 5 | Electronic compass mirror (6R transmission only) |
| F56 | — | Not used |
| F57 | — | Not used |
| F58 | 15 | Trailer tow backup lamps |
| F59 | 15 | Heated mirrors |
| F60 | — | One-touch Start diode |
| F61 | — | Fuel pump diode |
| F62 | — | Not used |
| F63 | — | Not used |
| F64 | 30 | Amplifier |
| F65 | 20 | Auxiliary power point (instrument panel) |
| F66 | 20 | Auxiliary power point (inside center console) |
| F67 | — | Not used |
| F68 | 20 | 4x4 module |
| F69 | 30 | Passenger heated/cooled seats |
| F70 | — | Not used |
| F71 | — | Not used |
| F72 | 20 | Auxiliary power point (Rear) |
| F73 | — | Not used |
| F74 | 30 | Driver power seat |
| F75 | 15 | PCM – voltage power 1 |
| F76 | 20 | Voltage power 2, Voltage - battery voltage, Mass air flow/Intake air temp, CMS 12 and 22 with 6R80 transmission, Brake on/off switch (BOO) |
| F77 | 10 | Voltage power 3, Electric fan clutch, A/C clutch relay coil, Floor shifter (4–speed transmission) |
| F78 | 25 | Ignition coils, Voltage power 4 |
| F79 | 10 | CMS 4–speed transmission, 12 and 22 with 4–speed transmission |
| F80 | 5 | Steering wheel illumination |
| F81 | — | Not used |
| F82 | 10 | Trailer Brake Control Module (TBCM), After market Center High Mounted Stop Lamp (CHMSL) |
| F83 | — | Not used |
| F84 | — | Not used |
| F85 | — | Not used |
A note about fuses, battery power and keep alive memory
If you disconnect the battery or remove the PCM fuses from the fuse box, the PCM will lose its adaptive memory and baseline throttle body position. You can avoid this by providing backup power using a jumper pack and an inexpensive OBDII cable. See this article for more information on providing backup power to prevent the loss of adaptive memory. Or, you can perform a throttle body relearn procedure and then drive the vehicle so it can relearn the new adaptive memory settings. See this article for instructions on how to perform a 2009 F150 throttle body relearn procedure.
2009 F150 Fuse Box Layout for Smart Junction Box
This fuse box is referred to by several names: Smart Junction Box, Body Control Module, and Passenger Compartment Fuse Panel. The passenger compartment fuse panel is under the instrument panel’s right-hand side, behind a trim panel. To remove the trim panel for access to the fuse box, pull the panel toward you, swing it out away from the side, and remove it. To reinstall it, line up the tabs with the grooves on the panel, then push it shut.
| Fuse number | Amperage | Circuits protected |
|---|---|---|
| F1 | 30 | Moon roof |
| F2 | 15 | Not used (spare) |
| F3 | 15 | Not used (spare) |
| F4 | 30 | Not used (spare) |
| F5 | 10 | Keypad illumination, Brake Shift Interlock (BSI), SJB microprocessor power |
| F6 | 20 | Turn signals, Stop lamps |
| F7 | 10 | Low beam headlamps (left) |
| F8 | 10 | Low beam headlamps (right) |
| F9 | 15 | Interior courtesy lights, Cargo lamps |
| F10 | 15 | Backlighting, Puddle lamps |
| F11 | 10 | Not used (spare) |
| F12 | 7.5 | Power mirror switch, Memory seat module microprocessor power, Steering column switch |
| F13 | 5 | SYNC |
| F14 | 10 | Not used (spare) |
| F15 | 10 | Climate control |
| F16 | 15 | Ignition switch feed |
| F17 | 20 | All lock motor feeds |
| F18 | 20 | Driver memory seat switc |
| F19 | 25 | Not used (spare) |
| F20 | 15 | Adjustable pedals, Datalink |
| F21 | 15 | Fog lamps, Fog lamp indicator |
| F22 | 15 | Park lamps, Side marker lamps |
| F23 | 15 | High beam headlamps |
| F24 | 20 | Horn |
| F25 | 10 | Interior demand lamps, Mid box power feed |
| F26 | 10 | Instrument panel cluster, Key out inhibit solenoid, Radio info display (CID), Radio buttons, Key-in chime |
| F27 | 20 | Not used (spare) |
| F28 | 5 | Radio muting |
| F29 | 5 | Instrument panel cluster |
| F30 | 5 | Passenger airbag disable indicator |
| F31 | 10 | Restraints control module |
| F32 | 10 | Non-integrated compass module, Heated-only seat module |
| F33 | 10 | Trailer brake controller |
| F34 | 5 | Electronic locking differential indicator |
| F35 | 10 | Rear park assist |
| F36 | 5 | PATS transceiver |
| F37 | 10 | Not used (spare) |
| F38 | 20 | Subwoofer |
| F39 | 20 | Radio, Navigation display |
| F40 | Not used (spare) | |
| F41 | 15 | Automatic dimming mirror, Door lock switch illumination, Radio accessory delay |
| F42 | 10 | Not used (spare) |
| F43 | 10 | Heated mirror/backlight relay, Rain sensor, Reverse camera |
| F44 | 10 | Not used (spare) |
| F45 | 5 | Front wiper logic, Blower motor relay |
| F46 | 7.5 | Occupant classification sensor (OCS) |
| F47 | 30A circuit breaker | Power windows, Moon roof, Power sliding backlight |
| F48 | — | Delayed accessory relay (Feeds fuse 41 and circuit breaker 47) |
Tips to diagnose electrical issues on your 2009 F150
If your power windows don’t work
• The power windows don’t use fuses. They get power from a 30A circuit breaker #47 in the smart junction box.
If your blower motor doesn’t work
The blower motor gets its power from the blower motor relay #3 in the battery junction/power distribution box.
If the circuit you’re working on contains a relay
• A simple way to test a relay is to swap in a similarly shaped relay and see if the component works.
• If that doesn’t work, remove the relay and test for power to the relay control coil and contacts using a multimeter. For more information on relay testing, see this article.
©, 2018 Rick Muscoplat