Ford F150 2003 Owners Manual
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Fuse/Relay LocationFuse Amp RatingPassenger Compartment Fuse Panel Description 7 — Not used 8 5A Radio, Remote entry module, GEM, In-vehicle entertainment system (SuperCrew only) 9 — Not used 10 — Not used 11 30A Front washer pump relay, Wiper run/park relay, Wiper HI/LO relay, Windshield wiper motor 12 — Not used 13 20A Stop lamp switch (Lamps), Turn/Hazard flasher 14 15A Battery saver relay, Interior lamp relay 15 5A Stop lamp switch (speed control, brake shift interlock), GEM, Rear Anti-lock Brake System (RABS) module 16 20A Headlamps (hi beams), Cluster (hi beam indicator) 17 — Not used 18 5A Instrument illumination (dimmer switch power) 19 — Not used 20 5A Audio, GEM, PCM, Transmission range sensor 21 15A DTR sensor, Clutch switch, Starter relay, I/P fuse 20 22 10A Air bag module, Passenger air bag deactivation module 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 181
Fuse/Relay LocationFuse Amp RatingPassenger Compartment Fuse Panel Description 23 10A Trailer tow battery Charge relay, Turn/Hazard flasher, 4x4 solenoids, 4x4 relays, Overhead console, 4–Wheel Anti-lock Brake System (4WABS) module, EC mirror, Heated seats 24 10A Function selector switch assembly 25 10A Heated mirrors 26 10A Right-hand low beam headlamp 27 5A Foglamp relay and foglamp indicator, Main light switch (upstream) 28 10A Left-hand low beam headlamp 29 5A Autolamp module, Transmission overdrive control switch, Central security module, Beltminder 30 30A Passive Anti-theft transceiver, Cluster, Ignition coils, PCM relay, Coil on plugs, Radio noise capacitor, ECC diode 31 — Not used Relay 1 — Interior lamp relay Relay 2 — Battery saver relay Relay 3 — Not used Relay 4 — One-touch down window relay Relay 5 — Accessory delay relay Power distribution box The power distribution box is located in the engine compartment. The power distribution box contains high-current fuses that protect your vehicle’s main electrical systems from overloads. Always disconnect the battery before servicing high current fuses. 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 182
Always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs If the battery has been disconnected and reconnected, refer to the Batterysection of theMaintenance and specificationschapter. The high-current fuses are coded as follows. Fuse/Relay LocationFuse Amp RatingPower Distribution Box Description 1 20A * Power point 2 30A* Powertrain Control Module (PCM) 3 30A* Main light switch, Headlamp relay, Multifunction switch 4 20A* Console power point (Harley Davidson only) 5 20A* Trailer tow back-up/park lamps 6 15A* Main light switch, Park lamp relay 7 20A* Horn MAXI FUSE 115MAXI FUSE 116MAXI FUSE 117 MAXI FUSE 118 MAXI FUSE 111MAXI FUSE 112MAXI FUSE 113 MAXI FUSE 114 MAXI FUSE 107MAXI FUSE 108MAXI FUSE 109 MAXI FUSE 110 MAXI FUSE 103MAXI FUSE 104MAXI FUSE 105 MAXI FUSE 106 MAXI FUSE 101MAXI FUSE 102 CB601 CB602 FUSE 17 FUSE 18FUSE 21 FUSE 22 FUSE 19 FUSE 20FUSE 23 FULL RELAY 302R 401 D 501 FUSE 24 FUSE 15 FUSE 16 FUSE 13 FUSE 14 FUSE 11 FUSE 12 FUSE 9 FUSE 10 FUSE 7 FUSE 8 FUSE 5 FUSE 6 FUSE 3 FUSE 4 FUSE 1 FUSE 2 D 503 D 502 FULL RELAY 301HALF RELAY 207 FULL RELAY 305FULL RELAY 306 FULL RELAY 303 FULL RELAY 304 HALF RELAY 201 HALF RELAY 202HALF RELAY 208 HALF RELAY 209 HALF RELAY 205 HALF RELAY 206 HALF RELAY 203 HALF RELAY 204 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 183
Fuse/Relay LocationFuse Amp RatingPower Distribution Box Description 8 15A* Power door locks, Central Security Module (CSM), Lock relays (not used on SuperCrew) 9 15A* Daytime Running Lamps (DRL), Fog lamps 10 20A* Fuel pump 11 20A* Alternator field 12 20A* Rear auxiliary power point (SuperCrew only) 13 15A* A/C clutch 14 — Not used 15 10A* Running board lamps 16 15A* Bi-fuel injector module, fuel selector switch and alternative fuel injectors (Bi-fuel vehicles only) 17 — Not used 18 15A* PCM, Fuel injectors, Fuel pump relay, Mass air flow sensor 19 10A* Trailer/Camper adapter (right stop/turn lamp) 20 10A* Trailer/Camper adapter (left stop/turn lamp) 21 — Not used 22 — Not used 23 15A* HEGO sensor, Automatic transmission 24 — Not used 101 30A** Trailer tow battery charge 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 184
Fuse/Relay LocationFuse Amp RatingPower Distribution Box Description 102 50/20A** Four-wheel Anti-lock Brake System (4WABS) module/Rear-wheel Anti-lock Brake System (RABS) module, Ignition switch 103 50A** Central junction box 104 30A** 4x4 shift motor & clutch 105 40A** Climate control front blower 106 20A** Intercooler pump (supercharged engine only) 107 — Not used 108 30A** Trailer tow electric brake 109 — Not used 110 30A** Accessory delay relay (Not used on SuperCrew) 111 40A** Ignition switch battery feed (start and run circuits) 112 30A** Drivers power seat, Adjustable pedal switch 113 40A** Ignition switch battery feed (run and accessory circuits) 114 — Not used 115 20A** Power door locks (SuperCrew only) 116 40A** Heated backlight 117 – 118 30A** Heated seats 201 — Trailer tow park lamp relay 202 — Front wiper run/park relay 203 — Trailer tow backup lamp relay 204 — A/C clutch relay 205 — Horn relay 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 185
Fuse/Relay LocationFuse Amp RatingPower Distribution Box Description 206 — Fog lamp relay 207 — Front washer pump relay 208 — Intercooler pump relay (supercharged engine only) 209 — Front wiper HI/LO relay 301 — Fuel pump relay 302 — Trailer tow battery charge relay 303 — Heated backlight relay (SuperCrew only) 304 — PCM relay 305 — Fuel pump HI/LO relay (supercharged engine only) 306 — Inertia switch relay (supercharged engine only) 401 — Not used 501 — PCM diode 502 — A/C compressor diode 503 — Not used 601 CB Power windows, Moonroof (SuperCrew only) 602 — Not used *Mini fuses **Maxi fuses CHANGING THE TIRES If you get a flat tire while driving, do not apply the brake heavily. Instead, gradually decrease your speed. Hold the steering wheel firmly and slowly move to a safe place on the side of the road. Harley-Davidson vehicles are equipped with a spare tire with a different speed rating than the road tires. It is not recommended that you exceed 112 km/h (70 mph) when the spare tire is in use. Though the spare tire is rated for 112 km/h (70 mph), always obey the local speed limits. The use of tire sealants is not recommended and may compromise the integrity of your tires. 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 186
Spare tire information Your vehicle is equipped with a spare tire that may be used as a spare or a regular tire. The spare tire wheel may not match the road wheel, and is not equipped with wheel trim. The wheel trim from the wheel/tire may be used on the spare if the wheels match. If your vehicle is equipped with 4WD, a spare tire of a different size than the road tires should not be used. Use of such a tire could result in damage to driveline components and an increased risk of loss of vehicle control, vehicle rollover, personal injury or death. Location of the spare tire and tools The spare tire and tools for your vehicle are stowed in the following locations: Tool Location Spare tire Under the vehicle, just forward of the rear bumper Jack, lug nut wrench Regular cab: Under the seat on the passenger side Super Cab: Under the front or rear seat on the passenger side Super Crew cab: In the passenger side rear storage compartment Jack handle On top of the radiator support at the front of the engine compartment Key, spare tire lock In the glove box Removing the spare tire 1. If equipped with a two piece lug wrench, assemble the lug wrench as shown in the illustration. •To assemble, screw the parts together. To disassemble, unscrew. 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 187
2. Attach the spare tire lock key (A) to the jack handle (B). 3. Fully insert the jack handle through the bumper hole and into the guide tube. The key and lock will engage with a slight push and counterclockwise turn. Some resistance will be felt when turning the jack handle assembly. 4. Turn the handle counterclockwise until tire is lowered to the ground, the tire can be slid rearward and the cable is slightly slack. 5. Remove the retainer from the spare tire. Tire change procedure To prevent the vehicle from moving when you change a tire, be sure the parking brake is set, then block (in both directions) the wheel that is diagonally opposite (other side and end of the vehicle) to the tire being changed. If the vehicle slips off the jack, you or someone else could be seriously injured. Refer to the instruction sheet (located with the jack) for detailed tire change instructions. 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 188
1. Park on a level surface, activate hazard flashers and set the parking brake. 2. Place gearshift lever in P (Park) (automatic transmission) or in the reverse gear (manual transmission)and turn engine OFF. 3. Block the diagonally opposite wheel. 4. Obtain the spare tire and jack from their storage locations. 5. Use the tip of the lug wrench to remove any wheel trim. 6. Loosen each wheel lug nut one-half turn counterclockwise but do not remove them until the wheel is raised off the ground. 7. Position the jack according to the following guides and turn the jack handle clockwise until the wheel is completely off the ground. 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 189
When one of the rear wheels is off the ground, the transmission alone will not prevent the vehicle from moving or slipping off the jack, even if the transmission is in P (Park) or in the reverse gear (manual transmission). To prevent the vehicle from moving when you change the tire, be sure that the parking brake is set and the diagonally opposite wheel is blocked. If the vehicle slips off the jack, someone could be seriously injured. •Front (4x2) •Front (4x4) 2003 F150(f12) Owners Guide (post-2002-fmt) USA English(fus) Roadside Emergencies 190