The Ford Expedition (1997-1998) is a full-size SUV built for power, space, and versatility. It features a four-door body style with a spacious interior that accommodates up to eight passengers. Its rugged design makes it suitable for both urban driving and off-road adventures. With a sturdy body-on-frame construction, it offers impressive towing capabilities and ample cargo space, making it a popular choice for families, adventurers, and utility-focused drivers.
The SUV’s electrical system depends on its fuse box and relay components for smooth operation. The primary fuse box is located in the engine compartment on the driver’s side, protecting essential systems like the fuel pump, ignition, and engine management. A secondary fuse panel is positioned under the dashboard on the driver’s side, controlling interior features such as the power windows, radio, and air conditioning. Relays near the fuse boxes manage high-power components like the starter motor, headlights, and cooling fans. Regular maintenance of these electrical components ensures reliability and prevents unexpected breakdowns.
MUST READ: DYI – How to Check Car Fuses?
(1997-1998) Ford Expedition fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Ford Expedition 1997-1998 fuse assignment
Ford Expedition Year of production: 1997, 1998
Passenger Compartment Fuse Panel:
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.
Relays:
Relays are located in the power distribution box and should be replaced by qualified technicians.
Primary Battery Fuses (Megafuses) (1998):
The primary battery fuses are located in the engine compartment near the battery. Ford recommends that the megafuses are serviced by a qualified service technician.
Fuse Box Diagrams
1997
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (1997)
| â„– | A | Description |
|---|---|---|
| 1 | 15A | Stop/turn lamps |
| 2 | 5A | Instrument cluster, trip Computer |
| 3 | 25A | Cigar lighter |
| 4 | 5A | Autolamp module, head lamp relay, remote entry anti-theft with personality module (RAP), power mirro rs |
| 5 | 15A | Air condition (A/C) clutch, hybrid fan relay, backup lamps, speed control, DRL, instrument panei blend door actuator, electronic variable orifice (EVO) steering module |
| 6 | 5A | Generic electronic module (GEM), shift interlock, air suspension module, heated backlite (HBL) relay, steering sensor, trip Computer, compass |
| 7 | 5A | Console blower, auxiliary blower relay coil |
| 8 | 5A | GEM, radio, RAP module |
| 9 | – | Not used |
| 10 | – | Not used |
| 11 | 30A | Front wiper motor, washer motor |
| 12 | 5A | OBDII scan tool connector |
| 13 | 15A | Brake on/off switch, brake pressure switch |
| 14 | 15A | Interior lamps, delayed accessory relay, rear wiper relays |
| 15 | 5A | GEM, passive anti-theft system (PATS) module |
| 16 | 20A | High beam headlamps, high beam indicator |
| 17 | 10A | Heated mirrors, heated mirror switch |
| 18 | 5A | Instrument and switch illumination |
| 19 | 10A | Airbag diagnostic monitor, instrument cluster |
| 20 | 5A | GEM, air suspension module |
| 21 | 15A | Starter relay, junction box fu se #20 |
| 22 | 10A | Airbag diagnostic monitor |
| 23 | 10A | Electronic flasher, 4WD vacuum solenoids, trailer tow battery charge relay, console climate door actuator, auxiliary blend and mode door actuators, auxiliary pot switching module |
| 24 | 10A | l/P blower relay, junction fuse box #7 |
| 25 | 5A | 4WABS module, 4WABS red lamps relay |
| 26 | 10A | Right low beam head lamp, DRL module |
| 27 | 5A | Foglamp relay, main lamp switch |
| 28 | 10A | Left low beam headlamp |
| 29 | 5A | Auto lamp module, instrument cluster, transmission control indicator light and switch |
| 30 | 30A | Ignition coils, PCM relay, PATS module, radio capacitors |
| 31 | – | Not used |
| 1 | – | Interior lamp relay |
| 2 | – | Battery saver relay |
| 3 | – | HBL relay |
| 4 | – | One touch down relay |
| 5 | – | Accessory delay relay |
Power Distribution Box
List of fuses in the power distribution box (1997)
| â„– | A | Circuits protected |
|---|---|---|
| 1 | 20A | Trailer tow backup & tail lamps |
| 2 | 10A | Airbag diagnostic monitor |
| 3 | 30A | Power locks |
| 4 | 15A | Air suspension |
| 5 | 20A | Horn |
| 6 | 30A | Engine minifuse box fuses #3 and #5 |
| 7 | 15A | Park and tail lamps |
| 8 | 30A | Headlamps |
| 9 | 15A | Fog lamps and DRL |
| 10 | 25A | Auxiliary instrument panel (l/P) power point |
| 11 | 25A | Auxiliary console power point |
| 12 | 10A | Rear wiper |
| 13 | 30A | Auxiliary blower |
| 14 | 60A | Four wheel anti-lock brake system (4WABS) |
| 15 | 50A | Air suspension compressor |
| 16 | 40A | Trailer tow battery charge, engine minifuse box fuse #2, engine minifuse box fuse #4 |
| 17 | 30A | Four-wheel drive (4WD) transfer case motor and clutch |
| 18 | 30A | Driver power seat |
| 19 | 20A | Fuel pump |
| 20 | 50A | Junction box ignition switched feed |
| 21 | 50A | Junction box ignition switched feed |
| 22 | 50A | Junction box battery feed |
| 23 | 40A | Front blower |
| 24 | 30A | Powertrain control module power |
| 25 | 30 C.B. | Windows |
| 26 | – | not used |
| 27 | 40A | Heated backlite and mirrors |
| 28 | 30A | Trailer tow electric brake |
| 29 | 30A | Hybrid fan, moon roof, flip Windows |
| 1 | – | not used |
| 2 | – | PCM diode |
| 1 | – | Windshield wipers high/low speed |
| 2 | – | Windshield wipers run/park |
| 3 | – | Front washer pump relay |
| 4 | – | Fuel pump relay |
| 5 | – | Horn relay |
| 6 | – | PCM power relay |
Engine Mini Fuse Box
List of fuses in the engine mini fuse box (1997)
| â„– | A | Circuits protected |
|---|---|---|
| 1 | 5A | Powertrain control module (PCM) |
| 2 | 20A | Trailer tow stop/turn lamps |
| 3 | 10A | Audio rear integrated control panel (RICP), compact disc changer, radio |
| 4 | 10A | Running board lamps |
| 5 | 20A | Amplifier, subwoofer amplifier |
| 6 | – | Not used |
Primary Battery Fuses
List of fuses in the primary battery fuses (1997)
| â„– | A | Description |
|---|---|---|
| 1 | 175A | Power network box megause |
| 2 | 175A | Alternator megafuse |
| 3 | 20A | Alternator field minifuse |
1998
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (1998)
| â„– | A | Description |
|---|---|---|
| 1 | 15A | Flasher Relay |
| 2 | 5A | Instrument Cluster, Overhead Trip Computer (OTC) Module |
| 3 | 25A | Cigar Lighter |
| 4 | 5A | Park Lamp Relay, Headlamp Relay, Autolamp Module, Remote Anti-Theft Personality (RAP) Module, Power Mirror Switch |
| 5 | 15A | Digital Transmission Range (DTR) Sensor, Daytime Running Lamps (DRL) Module, Speed Control Servo/Amplifier Assembly, Heater – A/C Control Assembly, Blend Door Actuator, Electronic Variable Orifice (EVO) Module |
| 6 | 5A | Shift Lock Actuator, Generic Electronic Module (GEM), 4 Wheel Air Suspension (4WAS) Module, Compass Sensor, Steering Wheel Rotation Sensor, Heated Grid Relay, Overhead Trip Computer (OTC) Module |
| 7 | 5A | Auxiliary A/C Relay, Console Blower Motor |
| 8 | 5A | Radio, Main Light Switch, Remote Anti-Theft Personality (RAP) Module |
| 9 | – | Not Used |
| 10 | – | Not Used |
| 11 | 30A | Washer Pump Relay, Wiper Run/Park Relay, Wiper Hi/Lo Relay, 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, Interior Lamp 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, Left Power/Heated Signal Mirror, Right Power/Heated Signal Mirror |
| 18 | 5A | Main Light Switch, Generic Electronic Module (GEM), Instrument Illumination (Power supplied through Main Light Switch) |
| 19 | 10A | Instrument Cluster, Air Bag Diagnostic Monitor |
| 20 | 5A | 4 Wheel Air Suspension (4WAS), Generic Electronic Module (GEM) |
| 21 | 15A | Digital Transmission Range (DTR) Sensor, Junction Box Fuse/Relay Panel (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, Function Selector Switch, Rear Integrated Control Panel, Recirculation Vacuum Solenoid, Auxiliary A/C Mode 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-Function Switch) |
| 27 | 5A | Main Light Switch, Fog Lamp Relay |
| 28 | 10A | Left Headlamp |
| 29 | 5A | Autolamp Module, Instrument Cluster, Transmission Control Switch (TCS) |
| 30 | 30A | Radio Noise Capacitor, Ignition Coil, PCM Power Diode, Coil On Plugs |
| 31 | – | Not Used |
Power Distribution Box
List of fuses in the power distribution box (1998)
| â„– | A | 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 Integrated Control Panel, Sub-Woofer Power (Fuse 3 & Fuse 5) |
| 7 | 15A* | Main Light Switch, Park Lamp Relay |
| 8 | 30A* | Main Light Switch, Headlamp Relay, 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, Rear Wiper Down Motor Relay |
| 13 | 30A** | Auxiliary A/C Relay |
| 14 | 60A** | 4 Wheel Anti-Lock Brake System (4WABS) Module |
| 15 | 50A** | Air Suspension Solid State Compressor Relay |
| 16 | 40A** | Trailer Tow Battery Charge Relay, Engine Fuse Module (Fuse 2) |
| 17 | 30A** | Shift on the Fly Relay, Transfer Case 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 Panel Battery Feed |
| 23 | 40A** | PP Blower Relay |
| 24 | 30A** | PCM Power Relay, Engine Fuse Module (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 Brake Controller |
| 29 | 30A** | Flip Window Relay, Hybrid Cooling Fan Relay |
| * Mini Fuses ** Maxi Fuses | ||
Engine Mini Fuse Box
List of fuses in the engine mini fuse box (1998)
| â„– | A | Circuits Protected |
|---|---|---|
| 1 | 5A | Powertrain Control Module (PCM) |
| 2 | 20A | Trailer Tow Stop/Turn Lamps |
| 3 | 10A | Audio Rear Integrated Control Panel (RICP), Compact Disc Changer, Radio |
| 4 | 10A | Running Board Lamps |
| 5 | 20A | Amplifier, Subwoofer Amplifier |
| 6 | – | Not Used |
Primary Battery Fuses (Megafuses)
List of fuses in the primary battery fuses (1998)
| â„– | A | Description |
|---|---|---|
| 1 | 175A | Power Network Box Megafuse |
| 2 | 175A | Alternator Megafuse |
| 3 | 20A | Alternator Field Minifuse |
Conclusion
The Ford Expedition (1997-1998) delivers unmatched power and interior space. Ensuring the proper function of its fuse box and relays is crucial for maintaining its robust electrical systems.
