Table of Contents
Most electrical power circuits in American pickups and SUVs are protected by fuses. High-current electrical loads are connected via relays. These protective components are housed in power distribution boxes located under the hood and within the passenger compartment.
The diagram information applies to 1st and 2nd generation Ford Explorer (UN-platform: chassis codes UN46 / UN105) models produced from 1990 to 2005.
Passenger Compartment
The main fuse panel is located on the driver's side under the dashboard, while an auxiliary relay board is situated behind the center console.
| Diagram (Main Panel) | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| F1 | Cigarette lighter, clock | 10 |
| F2 | HVAC system | 10 |
| F3 | Parking lights, license plate lamps | 10 |
| F4 | Headlights, daytime running lights (DRL), parking lights, license plate lamps | 15 |
| F5 | On-board diagnostics (OBD) | 10 |
| F6 | Engine management system | 15 |
| F7 | Clock, instrument cluster illumination, cigarette lighter | 10 |
| F8 | Headlights, daytime running lights (DRL) | 15 |
| F9 | - | |
| F10 | Active suspension system, brake lights, multi-function control module, cruise control, HVAC system | 10 |
| F11 | Anti-lock Braking System (ABS), 4WD system, interior dome lights, instrument cluster, multi-function control module, warning chime | 10 |
| F12 | Windshield wipers / washers | 10 |
| F13 | ABS, active suspension system, 4WD system, engine management system, brake lights, turn signals, hazard lights, multi-function control module, cruise control | 15 |
| F14 | ABS | 10 |
| F15 | Charging system, instrument cluster, Supplemental Restraint System (SRS) | 15 |
| F16 | Windshield wipers / washers | 30 |
| F17 | Cigarette lighter, clock | 30 |
| F18 | HVAC system | 15 |
| F19 | Engine management system | 25 |
| F20 | Multi-function control module, cigarette lighter, clock, audio system | 10 |
| F21 | Turn signals / hazard lights | 15 |
| F22 | Door ajar indicators / anti-theft alarm | 15 |
| F23 | Windshield wipers / washers | 15 |
| F24 | Starting system | 15 |
| F25 | Instrument cluster, multi-function control module | 10 |
| F26 | 4WD system, engine management system, DRL, reverse lights, rear window defroster | 15 |
| F27 | 4WD system, interior dome lights, door courtesy lights | 15 |
| F28 | 4WD system, starting system, windshield wipers / washers, multi-function control module | 10 |
| F29 | Audio system | 15 |
| F30 | - | |
| F31 | Parking lights, license plate lamps | 10 |
| F32 | Rear window defroster | 10 |
| F33 | Headlights, daytime running lights (DRL) | 20 |
| F34 | Headlights, daytime running lights (DRL) | 15 |
| F35 | Fog lights | 15 |
| F36 | - | |
| Diagram (Auxiliary Panel) | |
|---|---|
|
|
| No. | Description |
| 1 | Parking light / taillight relay |
| 2 | Power windows, sunroof, 4WD system relay |
| 3 | Anti-theft relay |
| 4 | Interior lighting relay |
| 5 | Ignition auxiliary relay |
| 6 | Power window relay (down) |
Engine Compartment
There are three fuse/relay boxes in the engine compartment: the main power distribution box is marked with a red dot, and the two auxiliary boxes are marked with green dots.
| Diagram (Main Power Distribution Box) | ||
|---|---|---|
|
||
| No. | Description | A |
| F1 | Starting system | 60 |
| F2 | 60 | |
| F3 | Active suspension system | 50 |
| F4 | - | |
| F5 | 4WD system, power seats | 30 |
| F6 | HVAC system | 50 |
| F7 | Parking lights, license plate lamps, warning chime | 30 |
| F8 | Turn signals / hazard lights, parking lights, license plate lamps | 20 |
| F9 | ABS | 30 |
| F10 | ABS | 30 |
| F11 | Headlights, daytime running lights (DRL), fog lights | 30 |
| F12 | Engine management system | 20 |
| F13 | 30 | |
| F14 | Rear window defroster | 30 |
| F15 | Cruise control, engine management system, horn | 20 |
| F16 | 4WD control module | 20 |
| F17 | Charging system | 15 |
| F18 | Active suspension system | 15 |
| F19 | Supplemental Restraint System (SRS) / Airbags | 10 |
| F20 | Cigarette lighter, clock | 30 |
| F21 | Windshield wipers / washers | 15 |
| F22 | - | |
| 1 | Horn relay | |
| 2 | Daytime running lights (DRL) relay | |
| 3 | Engine Control Module (ECM) relay | |
| 4 | Fuel pump relay | |
| 5 | Windshield wiper motor relay 1 | |
| 6 | Windshield wiper motor relay 2 | |
| 7 | A/C compressor clutch relay | |
| 8 | Engine Control Module (ECM) diode | |
| 9 | ABS diode | |
| 10 | Active suspension control relay | |
| Auxiliary Box No. 2 | |
|---|---|
|
|
| No. | Description |
| 1 | ABS pump motor relay |
| 2 | ABS relay |
| 3 | Trailer right turn signal relay |
| 4 | Rear window motor relay (down) |
| 5 | Trailer left turn signal relay |
| 6 | Rear window motor relay (up) |
| Auxiliary Box No. 3 | |
|---|---|
|
|
| No. | Description |
| 1 | HVAC blower motor relay |
| 2 | HVAC blower motor relay (high speed) |
| 3 | Windshield washer pump relay |
General Layout
Electronic Module Locations
|
|
| No. | Component |
| 1 | A/C refrigerant pressure switch |
| 2 | A/C low-pressure cutoff switch |
| 3 | SRS control module |
| 4 | Impact sensor, front (left) |
| 5 | Impact sensor, front (right) |
| 6 | SRS diagnostic connector |
| 7 | ABS control module |
| 8 | Integrated control module |
| 9 | Cruise control module |
| 10 | Daytime running lights (DRL) control module |
| 11 | DRL resistor |
| 12 | Data link connector (DLC) / Diagnostic connector |
| 13 | Diagnostic connector (ignition) |
| 14 | 4WD relay 1 |
| 15 | 4WD relay 2 |
| 16 | Fuel pump |
| 17 | Power distribution box (engine compartment 1) |
| 18 | Auxiliary relay box (engine compartment 2) |
| 19 | Auxiliary relay box (engine compartment 3) |
| 20 | Passenger compartment fuse panel 1 |
| 21 | Instrument panel relay box 2 |
| 22 | Rear fuse / relay box (luggage compartment) |
| 23 | Rear window defroster relay |
| 24 | Turn signal flasher module |
| 25 | Inertia fuel shutoff switch |
| 26 | Starter motor relay |
| 27 | Active suspension valve block 1, rear |
| 28 | Active suspension valve block 2, rear |
| 29 | Active suspension compressor |
| 30 | Suspension control module |
