A detailed Guide to the 1998 Ford Expedition Fuse Box Diagram, Step-by-step, we walk you through the 1998 Ford Expedition’s Electrical System, providing clear charts and annotations to help you become a master of your truck’s electrical system. Whether you’re a visual learner or simply prefer a hands-on approach, this article will serve as your go-to resource for understanding electrical issues.
The electrical system plays a vital role in ensuring your vehicle operates smoothly and provides an enjoyable driving experience. Think of the fuse box as a reliable guardian, protecting important electrical components by regulating the flow of electricity. With a comprehensive fuse box diagram at your disposal, you have the ability to navigate through the complex network of electrical pathways. This empowers you to effortlessly identify specific fuses, understand their ratings, and confidently diagnose any electrical issues that may arise. By addressing these concerns promptly, you save valuable time and potential repair costs, while also prioritizing the safety and optimal performance of your cherished vehicle.
Table of Contents
Note: All information contained in this Quick Reference Guide was accurate at the time of duplication. For detailed operating and safety information, please consult your Owner’s Manual.
1998 Ford Expedition Fuse Box Diagram Chart (Power Distribution Box)
Situated in the engine compartment, you’ll find the power distribution box, which serves as a crucial safeguard for your vehicle’s primary electrical systems. Equipped with high-current fuses, its purpose is to shield these systems from overloads that could potentially cause damage. To facilitate easy identification, the high-current fuses are uniquely coded, allowing you to discern their specific roles and responsibilities within the electrical system. This arrangement not only enhances convenience but also reinforces the importance of maintaining the integrity and efficiency of your vehicle’s electrical components.
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/RelayLocation | Fuse AmpRating | Description |
| 1 | 20A* | Trailer Tow Running Lamp Relay, Trailer Tow Backup Lamp Relay |
| 2 | 10A* | Air Bag Diagnostic Monitor |
| 3 | 30A* | All Unlock Relay, All Lock Relay, Driver’s Unlock Relay |
| 4 | 15A* | Air Suspension Service Switch |
| 5 | 20A* | Horn Relay |
| 6 | 30A* | Radio, Premium Sound Amplifier, CD Changer, Rear IntegratedControl Panel, Sub-Woofer Power(Fuse 3 & Fuse 5) |
| 7 | 15A* | Main Light Switch, Park LampRelay |
| 8 | 30A* | Main Light Switch, HeadlampRelay, Multi-Function Switch |
| 9 | 15A* | Daytime Running Lamps (DRL)Module, Fog Lamp Relay |
| 10 | 25A* | I/P Auxiliary Power Socket |
| 11 | 25A* | Console Auxiliary Power Socket |
| 12 | 10A* | Rear Wiper Up Motor Relay, RearWiper Down Motor Relay |
| 13 | 30A** | Auxiliary A/C Relay |
| 14 | 60A** | 4 Wheel Anti-Lock Brake System(4WABS) Module |
| 15 | 50A** | Air Suspension Solid StateCompressor Relay |
| 16 | 40A** | Trailer Tow Battery Charge Relay, Engine Fuse Module (Fuse 2) |
| 17 | 30A** | Shift on the Fly Relay, TransferCase Shift relay |
| 18 | 30A** | Power Seat Control Switch |
| 19 | 20A** | Fuel Pump Relay |
| 20 | 50A** | Ignition Switch (B4 & B5) |
| 21 | 50A** | Ignition Switch (B1 & B3) |
| 22 | 50A** | Junction Box Fuse/Relay PanelBattery Feed |
| 23 | 40A** | I/P Blower Relay |
| 24 | 30A** | PCM Power Relay, Engine FuseModule (Fuse 1) |
| 25 | 30A CB | Junction Box Fuse/Relay Panel, ACC Delay Relay |
| 26 | — | Not Used |
| 27 | 40A** | Junction Box Fuse/Relay Panel, Heated Grid Relay |
| 28 | 30A** | Trailer Electronic BrakeController |
| 29 | 30A** | Flip Window Relay, HybridCooling Fan Relay |
1998 Ford Expedition Fuse Box Diagram (Passenger compartment panel)
Situated conveniently beneath and to the left of the steering wheel, in close proximity to the brake pedal, lies the fuse panel, which acts as the central hub for all the fuses in your vehicle. Once you remove the panel cover, you can effortlessly reach this essential component. To facilitate a seamless process of replacing fuses, the manufacturer has included a practical device known as the fuse puller within the panel cover. This tool streamlines the task of removing fuses, providing you with greater ease in upkeeping and diagnosing your electrical system.
| Fuse/RelayLocation | Fuse AmpRating | Description |
| 1 | 15A | Flasher Relay |
| 2 | 5A | Instrument Cluster, Overhead TripComputer (OTC) Module |
| 3 | 25A | Cigar Lighter |
| 4 | 5A | Park Lamp Relay, HeadlampRelay, Autolamp Module, RemoteAnti-Theft Personality (RAP)Module, Power Mirror Switch |
| 5 | 15A | Digital Transmission Range (DTR)Sensor, Daytime Running Lamps(DRL) Module, Speed ControlServo/Amplifier Assembly, Heater-A/C Control Assembly, Blend Door Actuator, ElectronicVariable Orifice (EVO) Module |
| 6 | 5A | Shift Lock Actuator, GenericElectronic Module (GEM), 4Wheel Air Suspension (4WAS)Module, Compass Sensor, SteeringWheel Rotation Sensor, HeatedGrid Relay, Overhead TripComputer (OTC) Module |
| 7 | 5A | Auxiliary A/C Relay, ConsoleBlower Motor |
| 8 | 5A | Radio, Main Light Switch, RemoteAnti-Theft Personality (RAP)Module |
| 9 | — | Not Used |
| 10 | — | Not Used |
| 11 | 30A | Washer Pump Relay, WiperRun/Park Relay, Wiper Hi/LoRelay, Windshield Wiper Motor, Rear Wiper Pump Relay |
| 12 | 5A | Data Link Connector (DLC) |
| 13 | 15A | Brake On/Off (BOO) Switch, Brake Pressure Switch |
| 14 | 15A | Battery Saver Relay, InteriorLamp Relay |
| 15 | 5A | Generic Electronic Module(GEM), Passive Anti-Theft System(PATS) Module |
| 16 | 20A | Instrument Cluster (W/O DRL), Daytime Running Lamps (DRL)Module, Hi-Beam Headlamps(Power supplied through Multi-Function Switch) |
| 17 | 10A | Heated Backlight Switch, LeftPower/Heated Signal Mirror, RightPower/Heated Signal Mirror |
| 18 | 5A | Main Light Switch, GenericElectronic Module (GEM), Instrument Illumination (Power supplied through Main LightSwitch) |
| 19 | 10A | Instrument Cluster, Air BagDiagnostic Monitor |
| 20 | 5A | 4 Wheel Air Suspension (4WAS), Generic Electronic Module (GEM) |
| 21 | 15A | Digital Transmission Range (DTR)Sensor, Junction Box Fuse/RelayPanel (Fuse 20) |
| 22 | 10A | Air Bag Diagnostic Monitor |
| 23 | 10A | Trailer Tow Battery Charge Relay, 4X4 Center Axle Disconnect solenoid, 4X2 Center Axle Disconnect Solenoid, FunctionSelector Switch, Rear IntegratedControl Panel, RecirculationVacuum Solenoid, Auxiliary A/CMode Acturator, Auxiliary A/C Control Module |
| 24 | 10A | Function Selector Switch |
| 25 | 5A | 4 Wheel Anti-Lock Brake System(4WABS) Module, 4WABS Relay |
| 26 | 10A | Daytime Running Lamps (DRL) Module, Right Headlamp (Power supplied through Multi-FunctionSwitch) |
| 27 | 5A | Main Light Switch, Fog LampRelay |
| 28 | 10A | Left Headlamp |
| 29 | 5A | Autolamp Module, InstrumentCluster, Transmission ControlSwitch (TCS) |
| 30 | 30A | Radio Noise Capacitor, IgnitionCoil, PCM Power Diode, Coil OnPlugs |
| 31 | — | Not Used |
1998 Ford Expedition Standard fuse amperage rating and color
| Fuse rating | Color |
| 5 amp | Tan |
| 7.5 amp | Brown |
| 10 amp | Red |
| 15 amp | Light blue |
| 20 amp | Yellow |
| 20 amp fuse link | Light blue |
| 25 amp | Natural |
| 30 amp | Light green |
| 30 amp fuse link | Pink |
| 40 amp fuse link | Green |
| 50 amp fuse link | Red |
| 60 amp fuse link | Yellow |
| 80 amp fuse link | Black |
| 100 amp fuse link | Dark blue |
1998 Ford Expedition Relays
Located within the power distribution box, you will find relays, which play a crucial role in the functioning of various electrical systems in your vehicle. These relays are responsible for controlling the flow of electrical power to different components, ensuring they receive the necessary energy to operate.
It is important to highlight that the replacement of relays should be carried out by qualified technicians. Relays are intricate devices that require specific knowledge and expertise to handle correctly. Qualified technicians possess the necessary skills to identify faulty relays, select appropriate replacements, and ensure they are installed properly.
Remember, when it comes to the replacement of relays, it is best to rely on the skills and knowledge of qualified technicians. Their professional assistance will help to safeguard the proper functioning of your vehicle’s electrical components, providing you with a safe and reliable driving experience.
1998 Ford Expedition Primary battery fuses (Mega fuses)
The main battery fuses can be found in close proximity to the battery within the engine compartment. These mega-fuses play a critical role in protecting the electrical system from excessive currents and potential hazards. By being situated near the battery, these primary battery fuses serve as a crucial line of defense. They effectively safeguard the electrical components of your vehicle, ensuring they operate within safe parameters and minimizing the risk of damage or malfunctions.
However, when it comes to servicing or replacing mega fuses, it is strongly recommended to seek the expertise of a qualified service technician. These professionals possess the knowledge, skills, and tools necessary to handle mega fuses accurately and safely. By entrusting this task to a qualified technician, you can have peace of mind knowing that the integrity and efficiency of your vehicle’s electrical system will be preserved.
| Location | Amperage | Description |
| 1 | 175 | Power Network Box Megafuse |
| 2 | 175 | Alternator Megafuse |
| 3 | 20 | Alternator Field Minifuse |
1998 Ford Expedition Engine mini fuse box
The fuse box for the engine’s mini fuses can be found conveniently on the left-hand side of the engine compartment, specifically on the driver’s side. It serves as the central hub for all the mini fuses that safeguard various electrical components within the engine. This strategic placement allows for easy access and efficient maintenance, ensuring that any fuse replacements or inspections can be performed swiftly without hindering the driver’s convenience. By having the fuse box in such a location, drivers can quickly address any electrical issues that may arise, keeping their vehicles running smoothly and their driving experience uninterrupted.
| SlotNumber | FuseAmperageRating | Circuits Protected |
| 1 | 5 amp | Powertrain Control Module (PCM) |
| 2 | 20 amp | Trailer Tow Stop/Turn Lamps |
| 3 | 10 amp | Audio Rear Integrated Control Panel(RICP), Compact Disc Changer, Radio |
| 4 | 10 amp | Running Board Lamps |
| 5 | 20 amp | Amplifier, Subwoofer Amplifier |
| 6 | — | Not Used |
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Conclusion
In conclusion, the fuse box diagram for a 1998 Ford Expedition plays a vital role in ensuring the proper functioning of your vehicle’s electrical systems. It serves as a guide, providing valuable information on the location and rating of each fuse. By utilizing the fuse box diagram as a reference and seeking professional help when necessary, you can effectively maintain and troubleshoot the electrical systems of your vehicle in optimal condition for years to come.
However, it is important to remember that the fuse box diagram is just a starting point. Complex electrical problems may require the expertise of a professional mechanic. If you encounter issues that go beyond your knowledge and skills, it is highly recommended to seek assistance from a qualified technician. They have the experience and specialized tools to diagnose and repair intricate electrical faults, ensuring the safety and reliability of your vehicle.
