Are you having trouble with the electrical system of your Ford F 250? Do you need to replace a fuse but cannot find the fuse diagram? This article is for you. We have put together a comprehensive guide to the Ford F 250 fuse diagram, including tables and FAQs, to help you keep your truck’s electrical system in top condition. So, let’s get started.
Understanding the Fuse Box and Fuses
Before we dive into the Ford F 250 fuse diagram, let’s understand the fuse box and fuses. Your truck’s fuse box houses all the fuses that protect the electrical circuits from damage due to overloading or short circuits. Each fuse is designed to break the circuit if there is an electrical overload, preventing damage to the circuit and the vehicle.
The Ford F 250 has two fuse boxes – one under the hood, and the other inside the cab. The fuse boxes contain different types of fuses, including blade fuses, mini fuses, and maxi fuses.
Types of Fuses
Blade Fuses: These fuses are also known as spade fuses or plug-in fuses. They have a plastic body with two metal prongs that fit into the fuse box’s slots.
Mini Fuses: These fuses are smaller than blade fuses and have a plastic body. They are used in newer vehicles and are compatible with most modern electrical systems.
Maxi Fuses: These fuses are the largest type of fuse and have a plastic body with two metal prongs. They are used for high-current electrical systems, such as the alternator or air conditioning.
How to Check a Fuse
If you suspect that a fuse has blown, you can check it with a multimeter or a fuse tester. To check a fuse using a multimeter, set the meter to the ohms setting and touch the fuse’s prongs with the meter’s leads. If the fuse is intact, the meter will read zero ohms. If the fuse has blown, the meter will read infinity or OL (open line).
Alternatively, you can use a fuse tester to check a fuse. Simply insert the tester into the fuse slot and check the LED light. If the light is green, the fuse is intact. If the light is red, the fuse has blown.
Ford F 250 Fuse Diagram
Now that you understand the fuse box and fuses, let’s look at the Ford F 250 fuse diagram. Below is a table that lists the fuses in the under hood fuse box and their functions.
| Fuse Number | Function | Rating |
|---|---|---|
| 1 | Powertrain Control Module (PCM) Keep Alive Memory | 30A |
| 2 | Trailer tow stop-turn relay fuse | 30A |
| 3 | Trailer tow battery charge relay fuse | 30A |
| 4 | PCM relay coil, Fuel Heater, Wastegate Solenoid, Injector Driver Module Relay Coil, Exhaust Back Pressure Regulator Solenoid, Intake Air Heater Relay Coil | 30A |
| 5 | Ignition Switch Feed | 30A |
| 6 | Trailer tow backup and tail lamps | 10A |
| 7 | Trailer tow park lamps | 10A |
| 8 | Climate Control System | 30A |
The under hood fuse box also contains additional fuses for the trailer tow relays, trailer battery charge relay, and trailer tow backup and tail lamps.
The table below lists the fuses in the interior fuse box and their functions.
| Fuse Number | Function | Rating |
|---|---|---|
| 1 | Accessory Delay Relay | 30A |
| 2 | Powertrain Control Module Keep Alive Memory | 30A |
| 3 | Heated Seats – Powertrain Control Module (PCM) | 20A |
| 4 | Air Conditioning Clutch Relay | 20A |
| 5 | Trailer Tow Backup Lamps Relay | 10A |
| 6 | Trailer Tow Battery Charge Relay, Truck Running Lamp Relay | 10A |
| 7 | Trailer Tow Stop/Turn Relay | 10A |
| 8 | Electronic Shift on the Fly (ESOF) Relay, Transfer Case Shift Relay, Power Seat Switch | 10A |
Frequently Asked Questions
1. Can I replace a blown fuse with a higher-rated one?
No, you should never replace a fuse with a higher-rated one. Fuses are designed to protect the electrical circuit and prevent damage from electrical overload. If you install a higher-rated fuse, you risk damaging the circuit or even starting a fire.
2. What should I do if a fuse keeps blowing?
If a fuse keeps blowing, it could indicate a problem with the electrical system. You should have the system checked by a qualified mechanic to prevent further damage or safety hazards.
3. How do I locate the fuse box in my Ford F 250?
The Ford F 250 has two fuse boxes – one under the hood and the other inside the cab. The under hood fuse box is located on the driver’s side, while the interior fuse box is located on the passenger’s side below the dashboard.
4. How do I reset the airbag light after replacing a blown fuse?
You can reset the airbag light by disconnecting the truck’s battery for at least 15 minutes. This will reset the truck’s computer and clear any error codes. However, be aware that disconnecting the battery can also reset other settings, such as the clock and radio presets.
5. Can I replace a blown fuse myself?
Yes, you can replace a blown fuse yourself if you have a basic knowledge of electrical systems and the right tools. However, if you are not comfortable performing this task, it is best to leave it to a qualified mechanic.
That’s all for our comprehensive guide to the Ford F 250 fuse diagram. We hope this article has been helpful in understanding the fuse box and fuses, as well as the functions of each fuse in the Ford F 250. By following these tips and guidelines, you can keep your truck’s electrical system in top condition and avoid any potential safety hazards.
