2003 Ford F150 Fuse Box Diagram

In this article, we’re going to explore the 2003 Ford F150 fuse box diagram. We’ll explain what each fuse does, making it simpler for you to understand how your vehicle’s electrical system works. Our aim is to give you the knowledge to tackle electrical issues with confidence, like a pro.

Note: If a fuse blows or a circuit breaker opens, all parts connected to that circuit will stop working. Taking the time to inspect and replace faulty fuses can save you from unnecessary repairs and potential hazards, ensuring the smooth operation of your vehicle's electrical components.

2003 Ford F150 Power Distribution Box Diagram (Underhood)

Note: In the event that you need to disconnect and reconnect the battery, it's important to note that certain features may require resetting. This step is necessary to restore their functionality.

*Mini fuses /**Maxi fuses
Fuse/RelayLocationFuse AmpRatingPower Distribution BoxDescription
120A *Powerpoint
230A*Powertrain Control Module (PCM)
330A*Main light switch, Headlamp relay, Multifunction switch
420A*Console power point (Harley-Davidson only)
520A*Trailer tow backup/park lamps
615A*Main light switch, Park lamp relay
815A*Power door locks, Central Security Module (CSM), Lock relays (not used on SuperCrew)
915A*Daytime Running Lamps (DRL), Fog lamps
1020A*Fuel pump
1120A*Alternator field
1220A*Rear auxiliary power point(SuperCrew only)
1315A*A/C clutch
14Not used
1510A*Running board lamps
1615A*Four-wheel Anti-lock Brake System (4WABS) module/Rear-wheel Anti-lock brake System (RABS) module,Ignition switch
17Not used
1815A*Bi-fuel injector module, fuel selector switch, and alternative fuel injectors (Bi-fuel vehicles only)
1910A*Trailer/Camper adapter (right stop/turn lamp)
2010A*Trailer/Camper adapter (left stop/turn lamp)
21Not used
22Not used
2315A*HEGO sensor, Automatic transmission
24Not used
10130A**Trailer tow battery charge
10250/20A**Four-wheel Anti-lock Brake System (4WABS) module/Rear-wheel Anti-lock brake System (RABS) module, Ignition switch
10350A**Central junction box
10430A**4×4 shift motor & clutch
10540A**Climate control front blower
10620A**Intercooler pump (supercharged engine only)
107Not used
10830A**Trailer tow electric brake
109Not used
11030A**Accessory delay relay (Not used on SuperCrew)
11140A**Ignition switch battery feed (start and run circuits)
11230A**Drivers power seat, Adjustable pedal switch
11340A**Ignition switch battery feed (run and accessory circuits)
114Not used
11520A**Power door locks (SuperCrew only)
11640A**Heated backlight
11830A**Heated seats
201Trailer tow park lamp relay
202Front wiper run/park relay
203Trailer tow backup lamp relay
204A/C clutch relay
205Horn relay
206Fog lamp relay
207Front washer pump relay
208Intercooler pump relay(supercharged engine only)
209Front wiper HI/LO relay
301Fuel pump relay
302Trailer tow battery charge relay
303Heated backlight relay(SuperCrew only)
304PCM relay
305Fuel pump HI/LO relay(supercharged engine only)
306Inertia switch relay (supercharged engine only)
401Not used
501PCM diode
502A/C compressor diode
503Not used
601CBPower windows, Moonroof(SuperCrew only)
602Not used

2003 Ford F150 Passenger Compartment Fuse Panel

Fuse/RelayLocationFuse AmpRatingPassenger Compartment FusePanel Description
25APowertrain Control Module(PCM), Cluster
320ACigar lighter, Data link connector
45APower mirror switch, Mirror turn signal relays
515ASpeed control module, Reverse lamp, Climate mode switch, Daytime Running Lamps (DRL) relay, Digital Transmission Range(DTR) sensor
65ACluster, Brake shift interlock solenoid, GEM
7Not used
85ARadio, Remote entry module, GEM, In-vehicle entertainment system (SuperCrew only)
9Not used
10Not used
1130AFront washer pump relay, Wiper run/park relay, Wiper HI/LO relay, Windshield wiper motor
12Not used
1320AStop lamp switch (Lamps), Turn/Hazard flasher
1415ABattery saver relay, Interior lamp relay
155AStop lamp switch (speed control, brake shift interlock), GEM, Rear Anti-lock Brake System (RABS) module
1620AHeadlamps (hi beams), Cluster(hi beam indicator)
17Not used
185AInstrument illumination (dimmer switch power)
19Not used
205AAudio, GEM, PCM, Transmission range sensor
2115ADTR sensor, Clutch switch, Starter relay, I/P fuse 20
2210AAirbag module, Passenger airbag deactivation module
2310ATrailer tow battery Charge relay, Turn/Hazard flasher, 4×4 solenoids, 4×4 relays, Overhead console, 4–Wheel Anti-lock Brake System (4WABS) module, ECmirror, Heated seats
2410AFunction selector switch assembly
2510AHeated mirrors
2610ARight-hand low beam headlamp
275AFoglamp relay and foglamp indicator, Main light switch(upstream)
2810ALeft-hand low-beam headlamp
295AAutolamp module, Transmission overdrive control switch, Central security module, Beltminder
3030APassive Anti-theft transceiver, Cluster, Ignition coils, PCM relay, Coil on plugs, Radio noise capacitor, ECC diode
31Not used
Relay 1Interior lamp relay
Relay 2Battery saver relay
Relay 3Not used
Relay 4One-touch-down window relay
Relay 5Accessory delay relay

2003 Ford F150 Standard fuse amperage rating and color

Fuse ratingMini fusesStandard fusesMaxi fusesCartridge maxi fusesFuse link cartridge
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Tom Smith is a passionate car mechanic and automotive enthusiast, specializing in the intricate world of car fuse boxes. With years of hands-on experience under the hood, he has earned a reputation as a reliable expert in his field. As the founder and content creator of the popular blog website 'carsfuse.com,' Tom has dedicated himself to sharing his extensive knowledge of car fuse boxes and electrical systems with the world.

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