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Fuse box diagram (fuse layout), location and assignment of fuses and relays Ford F250, F250 Heavy Duty & F350 (1992, 1993, 1994, 1995, 1996, 1997).
Checking and Replacing Fuses
Fuses and circuit breakers protect your vehicle’s electrical system from overloading. If electrical parts in your vehicle are not working, the system may have been overloaded and blown a fuse or tripped a circuit breaker. Before you replace or repair any electrical parts, check the appropriate fuses or circuit breakers.
Notice
- Before replacing fuses check that the key has been removed from the ignition and that all the services are switched off and/or disengaged.
- Always disconnect the battery before servicing high current fuses.
- Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire.
- Never replace a broken fuse with anything other than a new fuse. Use always an intact fuse of the same color.
- To reduce the risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs.
- If a fuse blows again contact a qualified service center.
If you need to check a fuse, follow these steps:
- In order to find the fuse panel, you must first remove the cover from the lower edge of the instrument panel. You can do this by pulling on the handle to disengage the fasteners.
- On the fuse panel cover, find the number of the fuse you want to check. The diagram on the cover tells you where to locate the fuse on the panel.
- Check the fuse to see if it is blown. Look through the clear side of the fuse to see if the metal wire inside is separated. If it is, the fuse is blown and should be replaced.
- Replace the fuse with one that has the right amperage rating.
- Put the fuse panel cover back on
Passenger Compartment Fuse Box
It is located behind the cover on the instrument panel.
| № | A | Protected components |
|---|---|---|
| 1 | 30 | 1994-1997: Heater/Air conditioner blower |
| 15 | 1992-1993: Stop/hazard lamp, Speed control | |
| 2 | 30 | 1994-1997: Wiper/Washer |
| 25 | 1992-1993: Circuit Breaker: Windshield wiper/washer, Internal wiper/washer | |
| 3 | 3 | Diesel: Idle position switch |
| 4 | 15 | 1994-1997: Exterior lamps, Instrument illumination, Trailer exterior lamp relay, Warning buzzer/chime module |
| 20 | 1992-1993: Turn lamp, License lamps, Anti-theft module, Warning chime, Flash to pass, Trailer running lamp relay, Trailer b/u lamp relay, running lamps, Rear anti-lock brakes (1993) | |
| 5 | 15 | 1993: Air bag module, Del module, Aux. battery relay, Starting system, Transmission control switch, Backup lamps, Turn lamps |
| 6 | 15 | 1994-1997: Air conditioner clutch, Diesel auxiliary fuel selector, Remote keyless entry |
| 20 | 93: Speed control, Remote keyless entry module, Illuminated entry, Accessory tap, Anti-theft module, Trailer batteiy charge relay | |
| 7 | 15 | 1994-1997: Turn lamps |
| 30 | 1992-1993: Ignition system, Instrument cluster, PLA engine (diesel), EEC relay (1992), TFI module (1992), PCM power relay (1993), Ignition control module (1993) | |
| 8 | 15 | 1994-1997: Courtesy/dome/cargo lamps, Electric outside mirrors, Keyless entry, Speedometer, Warning buzzer/chime module |
| 1992-1993: Courtesy lamp switch, Illuminated entry, power mirrors, Visor lamps, Power door lock, Anti-theft indicator, Radio memory, Dome/map lamp, PSOM, Remote convenience module (1992), Remote keyless entry module (1993) | ||
| 9 | 25 | 1994-1997: Power point |
| 15 | 1992-1993: A/C Switch | |
| 10 | 4 | 1994-1997: Instrument illumination |
| 15 | 1992-1993: Cigar lighter | |
| 20 | 1992-1993: Cigar lighter, Rear power outlet | |
| 11 | 15 | 1994-1997: Radio, Radio display dimmer |
| 1992-1993: Radio and clock, Headlamp switch (1992), Main light switch (1993) | ||
| 12 | 20 | |
| 1994-1997: Circuit Breaker: Power door locks, Power driver seat, Power lumbar | ||
| 1992-1993: Circuit Breaker: Anti-theft module, Remote convenience module or without A/T power door locks (1992), Remote keyless entry module or without A/T power door locks (1993), Memory lock module | ||
| 13 | 15 | 1994-1997: Anti-lock brakes, Brake shift interlock, Electronic engine control, Speed control, Stop/hazard lamps, Stop sense for electronic engine control |
| 5 | 1992-1993: Instrument panel illumination lamps | |
| 14 | 20 | Circuit Breaker: Power windows |
| 15 | 20 | 1994-1997: Anti-lock brakes |
| 15 | 1992-1993: Air bag module | |
| 16 | 15 | 1994-1997: Cigarette lighter, Generic Scan Tool |
| 30 | 1992-1993: Power lumbar, Modified vehicle power | |
| 17 | 10 | 1994-1997: Diesel indicators, Electronic transmission, Gauges, Tachometer, Warning buzzer/chime module, Warning indicators |
| 20 | 1992-1993: Rear anti-lock brakes, PSOM | |
| 18 | 10 | 1994-1997: Brake shift interlock, Speedometer, Selectable RPM control (Diesel), Speed control (Diesel) |
| 15 | 1992-1993: Instrument panel warning lamps, Warning chime |
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Engine Compartment Fuse Box
The high current fuses contained in the Power Distribution Box protect your vehicle’s main electrical systems from overloads; these fuses provide the connection between the battery and your vehicle’s electrical systems.
Diagram 1992-1993
| № | A | Protected components |
|---|---|---|
| 1 | 15 | Horn relay |
| 2 | 10 | Class I trailer running lights, class II trailer running lights relay |
| 3 | 10 | Trailer L/H turn/stop light |
| 4 | 10 | Trailer R/H turn/stop light |
| 5 | - | Diode: Electronic engine control |
| 6 | 20 | Electric brake |
| 7 | 30 | EEC |
| 8 | 50 | Modified vehicle power |
| 9 | 60 | Aux heater-A/C |
| 10 | 60 | Trailer tow, aux battery relay |
| 11 | 60 | Interior fuse panel power feed |
| 12 | 30 | Trailer tow, back-up lights |
| 13 | 40 | Trailer tow |
| 14 | 30 | Fuel pump |
| 15 | 60 | Ignition switch |
| 16 | 60 | Blower motor, cigarette lighter |
| 17 | 50 | Power seats, driver power lumbar |
| R1 | Horn | |
| R2 | Fuel pump | |
| R3 | EEC | |
| R4 | Blower | |
Diagram 1994-1997
| № | A | Protected components |
|---|---|---|
| 1 | 20 | Audio power |
| 2 | 15 | 200 Amp alternator (Diesel ambulance only) |
| 3 | 30 | Daytime running lamps (Canada only), Headlamp flash-to-pass, Horn |
| 4 | 25 | Trailer back-up lamps, Trailer running lamps |
| 5 | 15 | Back-up lamps, Daytime running lamp module (DRL) (Canada only), Oxygen sensor heater, Trailer battery charge relay |
| 6 | 10 | Trailer right-hand stop/turn lamp |
| 7 | 10 | Trailer left-hand stop/turn lamp |
| 8 | 30 | Injector driver module (Diesel) |
| 9 | 30 | Gasoline: Powertrain control system |
| 20 | Diesel: Powertrain control system | |
| 10 | 20 | Instrument panel fuses: 15,18, Starter relay coil |
| 11 | — | Not used |
| 12 | — | Diode: Powertrain control system relay coil |
| 13 | 50 | Instrument panel fuses: 5,9,13 |
| 14 | — | Not used |
| 15 | 50 | Instrument panel fuses: 1, 7, Power distribution box: fuse 5 |
| 16 | 20 | Gasoline: Fuel pump feed |
| 17 | 50 | Alternator charge lamp, Idle position switch (Diesel), Instrument panel fuses: 2,6, 11,14,17, Power distribution box: fuse 22 |
| 18 | 30 | Trailer battery charge |
| 19 | 40 | Headlamps |
| 20 | 50 | Instrument panel fuses: 4, 8, 12,16 |
| 21 | 30 | Trailer brake feed |
| 22 | 20 | Gasoline: Distributor pickup, Ignition coil, Powertrain control system relay coil, Thick film integrated (TFI) module |
| 30 | Diesel: Fuel line heater, Glow plug controller, Powertrain control system relay coil | |
| R1 | Powertrain control system | |
| R2 | Gasoline: Fuel pump | |
| Diesel: Injector driver module (IDM relay) | ||
| R3 | Horn | |
| R4 | Trailer tow lamps | |
| R5 | Not used | |
Additional Fuses
| Fuse | A | Location |
|---|---|---|
| Headlamps & High Beam Indicator | 22 | Circuit Breaker: Integral with Headlamp Switch |
| Gasoline: Alternator, 95 | 12 | Fuse Links: At Starting Motor Relay |
| Diesel: Alternator, 130 | 12 (2) | Fuse Links: At Starting Motor Relay |
| Diesel Glow Plugs | 14 (2) | Fuse Links: At Starting Motor Relay |
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