Find the fuse box and relay locations for the 2002-2003 Ford E-150, E-250, E-350, E-450, and E-550 vans. Clear diagrams ensure reliable electrical system maintenance.
The Ford E-Series (E-150, E-250, E-350, E-450, and E-550) from 2002 to 2003 is a line of full-size vans designed for commercial and personal use. These vans are available in various configurations, including cargo vans for heavy-duty tasks and passenger vans capable of seating up to 15 people. With their durable build and versatility, these models are ideal for businesses, transport services, and even custom modifications like camper conversions.
The electrical system of the E-Series depends on its fuse box and relay components for smooth operation. The primary fuse box is located under the driver’s side dashboard, while the power distribution box, housing relays for larger systems like the fuel pump and ignition, is positioned in the engine compartment near the battery. These components protect critical systems such as lighting, air conditioning, and power accessories. Routine inspection and maintenance of the fuses and relays are essential to prevent electrical issues.
MUST READ: DYI – How to Check Car Fuses?
(2002-2003) Ford E-150 / E-250 / E-350 / E-450 / E-550 (2002-2003) 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 E-150 / E-250 / E-350 / E-450 / E-550 (2002-2003) fuse assignment
Ford E-150 / E-250 / E-350 / E-450 / E-550 Year of production: 2002, 2003
Passenger Compartment Fuse Panel:
The fuse panel is located below and to the left of the steering wheel by the brake pedal. Remove the panel cover to access the fuses.
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 are located in the power distribution box and should be replaced by qualified technicians.
Fuse Box Diagrams
2002
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (2002)
| № | A | Description |
|---|---|---|
| 1 | 20A | 4WABS module |
| 2 | 15A | Brake warning lamp, Instrument cluster, Warning chime, 4WABS relay, Warning indicators, Low vacuum warning switch (Diesel only) |
| 3 | 15A | Main light switch, RKE module, Radio, Instrument illumination, E-Traveler VCP and video screens, Overhead console |
| 4 | 15A | Power locks w/RKE, Illuminated entry, Warning chime, Modified vehicle, Main light switch, Courtesy lamps |
| 5 | 20A | RKE module, Power lock switches, Memory lock, Power locks with RKE |
| 6 | 10A | Brake shift interlock, Speed control, DRL module |
| 7 | 10A | Multi-function switch, Turn signals |
| 8 | 30A | Radio capacitor(s), Ignition coil, PCM diode, PCM power relay, Fuel heater (Diesel only), Glow plug relay (Diesel only) |
| 9 | 30A | Wiper control module, Windshield wiper motor |
| 10 | 20A | Main light switch, Park lamps, License lamp (externai lamps), Multi-function switch (flash-to-pass) |
| 11 | 15A | Brake pressure switch, Multi-function switch (hazards), Brake lamp switch, Brake lamps |
| 12 | 15A | Transmission Range (TR) sensor, Backup lamps, Auxiliary battery relay |
| 13 | 15A | Blend door actuator, A/C heater, Function selector switch |
| 14 | 5A | Instrument cluster (air bag and charge indicator) |
| 15 | 5A | Trailer battery charge relay |
| 16 | 30A | Power seats |
| 17 | – | Not used |
| 18 | – | Not used |
| 19 | 10A | Air bag diagnostic monitor |
| 20 | 5A | Overdrive cancel switch |
| 21 | 30A | Power Windows* |
| 22 | 15A | Memory power radio, E-Traveler radio, E-Traveler console |
| 23 | 20A | Cigar lighter, Data Link Connector (DLC) |
| 24 | – | Not used |
| 25 | 10A | Left headlamp (low beam) |
| 26 | – | Not used |
| 27 | 5A | Radio |
| 28 | 20A | Power plug |
| 29 | – | Not used |
| 30 | 15A | Headlamps (high beam indicator), DRL 10A |
| 31 | 10A | Right Headlamp (Low Beam), DRL |
| 32 | 5A | Power mirrors |
| 33 | 20A | E-Traveler power point #2 |
| 34 | 10A | Transmission Range (TR) sensor |
| 35 | 30A | RKE module |
| 36 | 5A | (Cluster, A/C, Illumination, Radio), Steering column assembly |
| 37 | 20A | Rear power point |
| 38 | 10A | Air bag diagnostic monitor |
| 39 | 20A | E-Traveler power point #1 |
| 40 | 30A | Modified vehicle |
| 41 | 30A | Modified vehicle |
| 42 | – | Not used |
| 43 | 20A C.B. | Power Windows* |
| 44 | – | Not used |
| * Either Fuse 21 or Circuit breaker 43 will be present for power Windows. | ||
Power Distribution Box
List of fuses in the power distribution box (2002)
| № | A | Description |
|---|---|---|
| 1 | – | Not used |
| 2 | – | Not used |
| 3 | – | Not used |
| 4 | 10A* | Powertrain Control Module (PCM) Keep Alive Memory, Instrument cluster, Voltmeter |
| 5 | 10A* | Right trailer turn signal |
| 6 | 10A* | Left trailer turn signal |
| 7 | 20A* | Clearance lamps |
| 8 | 60A** | I/P fuses 4, 5, 10, 11, 16, 22, 23, 28, 32, 38 |
| 9 | 30A** | PCM power relay, Engine compartment fuse 4 |
| 10 | 60A** | Auxiliary battery relay, Engine compartment fuses 14, 22 |
| 11 | 30A** | IDM relay (Diesel only) |
| 12 | 60A** | Engine compartment fuses 25, 27 |
| 13 | 50A** | Blower motor relay (blower motor) |
| 14 | 30A** | Trailer running lamps relay, Trailer backup lamps relay |
| 15 | 40A** | Main light switch, Daytime Running Lights (DRL) |
| 16 | 50A** | Auxiliary blower motor relay |
| 17 | 30A** | Fuel pump relay |
| 18 | 60A** | I/P fuses 33, 37, 39, 40, 41 |
| 19 | 60A** | 4WABS module |
| 20 | 20A** | Electric brake controller |
| 21 | 50A** | Modified vehicle power |
| 22 | 40A** | Trailer battery charge relay, Modified vehicles |
| 23 | 60A** | Ignition switch, Fuse panel |
| 24 | 30A* | Natural gas tank valves (NGV only) |
| 25 | 20A* | NGV module (NGV only) |
| 26 | 10A* | A/C clutch (4.2L only) |
| 27 | 15A* | DRL module, Horn relay |
| 28 | – | PCM diode |
| 29 | – | Not used |
| A | – | Marker lamps relay |
| B | – | Stop lamp relay |
| C | – | Trailer backup lamps relay |
| D | – | Trailer running lamps relay |
| E | – | Trailer battery charge relay |
| F | – | IDM relay (Diesel only), A/C clutch relay (4.2L only) |
| G | – | PCM relay |
| H | – | Blower motor relay |
| J | – | Horn relay |
| K | – | Fuel pump relay |
| * Mini fuses ** Maxi fuses | ||
2003
Passenger Compartment Fuse Panel
List of fuses in the passenger compartment fuse panel (2003)
| № | A | Description |
|---|---|---|
| 1 | 20A | 4WABS module |
| 2 | 15A | Brake warning lamp, Instrument cluster, Warning chime, 4WABS relay, Warning indicators, Low vacuum warning switch (Diesel only) |
| 3 | 15A | Main light switch, RKE module, Radio, Instrument illumination, VCP and video screens, Overhead console |
| 4 | 15A | Power locks w/RKE, Illuminated entry, Warning chime, Modified vehicle, Main light switch, Courtesy lamps |
| 5 | 20A | RKE module, Power lock switches, Memory lock, Power locks with RKE |
| 6 | 10A | Brake shift interlock, Speed control, DRL module |
| 7 | 10A | Multi-function switch, Turn signals |
| 8 | 30A | Radio capacitor(s), Ignition coil, PCM diode, PCM power relay, Fuel heater (Diesel only), Glow plug relay (Diesel only) |
| 9 | 30A | Wiper control module, Windshield wiper motor |
| 10 | 20A | Main light switch, Park lamps, License lamp (externai lamps), Multi-function switch (flash-to-pass) |
| 11 | 15A | Brake pressure switch, Multi-function switch (hazards), Brake lamp switch, Brake lamps |
| 12 | 15A | Transmission Range (TR) sensor, Backup lamps, Auxiliary battery relay |
| 13 | 15A | Blend door actuator, A/C heater, Function selector switch |
| 14 | 5A | Instrument cluster (air bag and charge indicator) |
| 15 | 5A | Trailer battery charge relay |
| 16 | 30A | Power seats |
| 17 | – | Not used |
| 18 | – | Not used |
| 19 | 10A | Air bag diagnostic monitor |
| 20 | 5A | Overdrive cancel switch |
| 21 | 30A | Power Windows* |
| 22 | 15A | Memory power radio, Rear seat control unit, Video screen |
| 23 | 20A | Cigar lighter, Data Link Connector (DLC) |
| 24 | – | Not used |
| 25 | 10A | Left headlamp (low beam) |
| 26 | – | Not used |
| 27 | 5A | Radio |
| 28 | 20A | Power plug |
| 29 | – | Not used |
| 30 | 15A | Headlamps (high beam indicator), DRL 10A |
| 31 | 10A | Right Headlamp (Low Beam), DRL |
| 32 | 5A | Power mirrors |
| 33 | 20A | Power point #2 |
| 34 | 10A | Transmission Range (TR) sensor |
| 35 | 30A | RKE module |
| 36 | 5A | (Cluster, A/C, Illumination, Radio), Steering column assembly |
| 37 | 20A | Rear power point |
| 38 | 10A | Air bag diagnostic monitor |
| 39 | 20A | Power point #1 |
| 40 | 30A | Modified vehicle |
| 41 | 30A | Modified vehicle |
| 42 | – | Not used |
| 43 | 20A C.B. | Power Windows* |
| 44 | – | Not used |
| * Either Fuse 21 or Circuit breaker 43 will be present for power Windows. | ||
Power Distribution Box
List of fuses in the power distribution box (2003)
| № | A | Description |
|---|---|---|
| 1 | – | Not used |
| 2 | – | Not used |
| 3 | – | Not used |
| 4 | 10A* | Powertrain Control Module (PCM) Keep Alive Memory, Instrument cluster, Voltmeter |
| 5 | 10A* | Right trailer turn signal |
| 6 | 10A* | Left trailer turn signal |
| 7 | 20A* | Clearance lamps |
| 8 | 60A** | I/P fuses 4, 5, 10, 11, 16, 22, 23, 28, 32, 38 |
| 9 | 30A** | PCM power relay, Engine compartment fuse 4 |
| 10 | 60A** | Auxiliary battery relay, Engine compartment fuses 14, 22 |
| 11 | 30A** | IDM relay (Diesel only) |
| 12 | 60A** | Engine compartment fuses 25, 27 |
| 13 | 50A** | Blower motor relay (blower motor) |
| 14 | 30A** | Trailer running lamps relay, Trailer backup lamps relay |
| 15 | 40A** | Main light switch, Daytime Running Lights (DRL) |
| 16 | 50A** | Auxiliary blower motor relay |
| 17 | 30A** | Fuel pump relay |
| 18 | 60A** | I/P fuses 33, 37, 39, 40, 41 |
| 19 | 60A** | 4WABS module |
| 20 | 20A** | Electric brake controller |
| 21 | 50A** | Modified vehicle power |
| 22 | 40A** | Trailer battery charge relay, Modified vehicles |
| 23 | 60A** | Ignition switch, Fuse panei |
| 24 | 20A* | Natural gas tank valves (NGV only) |
| 25 | 20A* | NGV module (NGV only) |
| 26 | 10A* | A/C clutch (4.2L only) |
| 27 | 15A* | DRL module, Horn relay |
| 28 | – | PCM diode |
| 29 | – | Not used |
| A | – | Marker lamps relay |
| B | – | Stop lamp relay |
| C | – | Trailer backup lamps relay |
| D | – | Trailer running lamps relay |
| E | – | Trailer battery charge relay |
| F | – | IDM relay (Diesel only), A/C clutch relay (4.2L only) |
| G | – | PCM relay |
| H | – | Blower motor relay |
| J | – | Horn relay |
| K | – | Fuel pump relay |
| * Mini fuses ** Maxi fuses | ||
Conclusion
The 2002-2003 Ford E-Series is built for reliability and functionality. Maintaining the fuse box and relays is key to ensuring the proper operation of its electrical features.
