F53 Power Distribution Box
 WARNING: Always disconnect the battery before servicing high current fuses. WARNING: To reduce risk of electrical shock, always replace the cover to the power distribution box before reconnecting the battery or refilling fluid reservoirs. |
Locate the power distribution box in the engine compartment. It has high-current fuses that protect your vehicle’s main electrical systems from overloads.If the battery has been disconnected and reconnected, you need to reset some features.
| Fuse or Relay Number | Fuse Rating | Protected Component |
|---|---|---|
| 1 | 5A1 | Power brake assist module – HydroMax. |
| 2 | 10A1 | Air conditioning compressor clutch. |
| 3 | 20A1 | Catalyst monitor sensor. Engine heated exhaust gas oxygen sensor #11 and #21. Canister vent. Vapor management valve. |
| 4 | 5A1 | Powertrain control module relay coil. Powertrain control module keep alive memory. |
| 5 | 20A1 | Powertrain control module power. |
| 6 | 20A1 | Instrument panel dimmer module. Park lamp feeds. Trailer tow running lamp relay coil. |
| 7 | 20A1 | Ignition coils. Radio capacitors. |
| 8 | 30A1 | HydroMax – Anti-lock brake system module. |
| 9 | 10A1 | Powertrain control module. |
| 10 | 20A1 | Daytime running lamps. |
| 11 | 20A1 | Fuel pump relay coil. Powertrain control module. Fuel pump diode. |
| 12 | 25A1 | Instrument panel – backup lamp feed. Trailer tow backup lamps feed. |
| 13 | 30A2 | Trailer tow electric brake controller feed. |
| 14 | 60A2 | Instrument panel battery feed (fuse #15, 21). Lighting primary fuse. Power distribution box fuse #19. |
| 15 | 20A2 | Trailer tow park lamps. |
| 16 | 60A2 | Anti-lock brake system module – HydroMax. |
| 40A2 | Anti-lock brake system module – Hydroboost. | |
| 17 | 20A2 | Horn feed. |
| 18 | 20A2 | Backup lamp relay coil. A/C clutch coil. A/C demand switch. |
| 19 | 20A2 | Brake on/off switch. Multifunction switch. |
| 20 | 30A2 | Powertrain control module relay (Power distribution box fuses # 3, 5, 7, 18). |
| 21 | 20A2 | Fuel injectors. Fuel pump motor. Mass air flow sensor. Powertrain control module. |
| 22 | 20A2 | Cigar lighter feed. Diagnostic tool connector. Fleet Telematics Modem and Ford Pass Connect. |
| 23 | 40A2 | Blower motor feed. |
| 24 | 50A2 | Instrument panel battery feed (fuses #4, 10, 16, 22). |
| 25 | 40A2 | Ignition switch feed (Instrument panel fuses #1, 5, 7, 11, 13, 14, 17, 19, 23, 36; Power distribution box fuses #9, 11). Fuse holder #2. |
| 26 | 40A2 | Ignition switch feed (Instrument panel fuses #5, 11, 17, 23, 38). |
| 27 | 30A2 | Headlamps. Daytime running lamps on/off relay coil. Headlamp daytime running lamp relay feed. High beam headlamps flash to pass. |
| 28 | 30A2 | Starter relay feed. Body builder. Starter motor solenoid. |
| 29 | 60A2 | HydroMax motor B+. HydroMax motor relay coil. Fuse holder #1. |
| 40A2 | Anti-lock brake system module – Hydroboost. | |
| R1 | — | A/C clutch relay. |
| R2 | — | Fuel pump relay. |
| R3 | — | Horn relay. |
| R4 | — | Starter relay. |
| R5 | — | Blower motor relay. |
| R6 | — | Powertrain control module relay. |
| Diode 1 | — | Fuel pump diode. |
| Diode 2 | — | Air conditioning clutch diode. |
1Mini fuse.2Maxi fuse.F59
Power Distribution Box
| Fuse or Relay Number | Fuse Rating | Protected Component |
|---|---|---|
| F1 | 10A3 | Air conditioning compressor clutch. |
| F2 | 30A3 | Anti-lock brake system – HydroMax. |
| F3 | 5A3 | Powertrain control module keep alive memory. Powertrain control module relay coil. |
| F4 | — | Not used. |
| F5 | 20A3 | Trailer tow running lamp relay coil. Park lamp feeds. Instrument panel dimmer module. |
| F6 | — | Not used. |
| F7 | 25A3 | Trailer tow backup lamp feed. Backup lamp feed. |
| F8 | — | Not used. |
| F9 | 20A3 | Daytime running lamps. |
| F10 | — | Not used. |
| F11 | — | Not used. |
| F12 | — | Not used. |
| F13 | — | Not used. |
| F14 | — | Not used. |
| F15 | 5A3 | Power brake assist module (HydroMax). |
| F16 | 20A3 | Powertrain control module power. |
| F17 | 20A3 | Catalyst monitor sensor. Engine heated exhaust gas oxygen sensor #11 and #21. Canister vent valve. Vapor management valve. |
| F18 | 20A3 | Radio capacitors. Ignition coils. |
| F19 | 10A3 | Powertrain control module. |
| F20 | 10A3 | HydroMax module brake on/off relay feed. |
| F21 | 20A3 | Powertrain control module. Fuel pump diode. Fuel pump relay coil. |
| F22 | 10A3 | Brake transmission shift interlock. |
| F23 | — | Not used. |
| F24 | — | Not used. |
| J1 | 40A4 | Blower motor relay feed. |
| J2 | 30A4 | Headlamps. High beam headlamps flash to pass. Headlamp daytime running lamp relay feed. |
| J3 | 30A4 | Powertrain control module relay feed. Power distribution box fuse F16, F17, F18, J22. |
| J4 | 20A4 | Cigar lighter feed. Diagnostic tool connector. Fleet Telematics Modem and Ford Pass Connect. |
| J5 | — | Not used. |
| J6 | 30A4 | Starter relay feed. Starter motor solenoid. |
| J7 | 40A4 | Anti-lock brake system module (Hydroboost). |
| 60A4 | Power brake assist motor (HydroMax). Power distribution box fuse #F20. | |
| J8 | 20A4 | Trailer tow park lamps. |
| J9 | 50A4 | Instrument panel fuse #F11, F13, F15, F17. |
| J10 | 60A4 | HydroMax anti-lock brake system module. |
| 40A4 | Hydroboost anti-lock brake system module. | |
| J11 | 20A4 | Fuel pump relay feed. Fuel injectors. Mass air flow sensor. Fuel pump motor. Powertrain control module. |
| J12 | 30A4 | Trailer tow electronic brake. |
| J13 | 40A4 | Ignition switch feed (instrument panel fuses #F2, F20, F4, F22, F6, F21, F24, F8, F26, F10). (Power distribution box fuse #F19, F22, F21). |
| J14 | — | Not used. |
| J15 | 60A4 | Instrument panel battery feed (fuse #F3, F5). Lighting primary fuse. |
| J16 | 20A4 | Horn. |
| J17 | 40A4 | Ignition switch feed (instrument panel fuses F20, F22, F24, F26, F18). |
| J18 | 20A4 | Brake on/off switch. Multifunction switch. |
| J19 | — | Not used. |
| J20 | — | Not used. |
| J21 | — | Not used. |
| J22 | 20A4 | Reverse lamp relay coil. A/C clutch relay coil. A/C demand switch. |
| R1 | — | Horn relay. |
| R2 | — | Fuel pump relay. |
| R3 | — | Starter relay. |
| R4 | — | Backup lamps relay. |
| R5 | — | Brake on/off signal isolating relay (Hydromax). |
| R6 | — | Trailer tow parking lamps relay. |
| R7 | — | Not used. |
| R8 | — | A/C clutch relay. |
| R9 | — | Not used. |
| R10 | — | Starter relay. |
| R11 | — | Blower motor relay. |
| R12 | — | Daytime running lamp/headlamp relay. |
| R13 | — | Powertrain control module relay. |
| D1 | — | Fuel pump diode. |
| D2 | — | Air conditioning clutch diode. |
| D3 | — | Not used. |
| C1 | — | Not used. |
3Mini fuse.4J case fuse.
UPS Power Distribution Box 1
| Fuse or Relay Number | Fuse Rating | Protected Component |
|---|---|---|
| R1 | Relay | Powertrain control module. |
| R2 | Relay | Daytime running lamps. |
| R3 | Relay | Starter motor. |
| R4 | Relay | Blower motor. |
| R5 | Relay | Horn. |
| R6 | Relay | Fuel pump. |
| R7 | Relay | Starter ground. |
| R8 | Relay | Trailer tow parking lamps. |
| R9 | Relay | Backup lamps. |
| R10 | Relay | Hydromax brake on/off relay. |
| R11 | Relay | Not used. |
| R12 | Relay | Not used. |
| M1-1 | 10A5 | Hydromax brake on/off relay. |
| M1-2 | 10A5 | Brake shift interlock (Column shift). |
| M1-3 | 5A5 | Power brake assist module (Hydromax). |
| M1-4 | 10A5 | Powertrain control module. |
5Micro 2 fuse.
UPS Power Distribution Box 2
| Fuse or Relay Number | Fuse Rating | Protected Component |
|---|---|---|
| M1 | 25A6 | Backup lamp feed. Trailer tow backup lamp feed. |
| M2 | 20A6 | Daytime running lamps. |
| M3 | 30A6 | 4–channel anti-lock brake system module (Hydromax). |
| M4 | 20A6 | Powertrain control module run/start. Fuel pump relay coil. Fuel pump diode. |
| M5 | 10A6 | Brake lamps. |
| M6 | 20A6 | Radio capacitors. Ignition coils. |
| M7 | 20A6 | Backup lamp relay coil. Air conditioning clutch coil. Air conditioning demand switch. |
| M8 | 20A6 | Catalyst monitor sensor. Engine heated exhaust gas oxygen sensor #11 and #21. Canister vent valve. Vapor management valve. |
| M9 | 20A6 | Powertrain control module power. |
| M10 | 5A6 | Brake shift interlock. |
| M11 | 5A6 | Powertrain control module relay keep alive power. Powertrain control module relay coil. |
| M12 | 20A6 | Parking lamps feed. |
| D1 | Diode | Not used. |
| D2 | Diode | Fuel pump. |
| D3 | Diode | Air conditioning clutch. |
| R2-1 | — | Not used. |
| J1 | 30A7 | Powertrain control module relay feed (power distribution box fuse M6, M7, M8, M9). |
| J2 | 20A7 | Fuel injectors. Fuel pump motor. Mass airflow sensor. Powertrain control module. |
| J3 | 20A7 | Cigar lighter power point. Diagnostic connector. |
| J4 | 40A7 | Blower motor. |
| J5 | 30A7 | Headlamps. Daytime running lamps on/off relay coil. Headlamp daytime running lamp relay feed. High beam headlamps flash to pass. |
| J6 | 40A7 | Ignition switch feeds. |
| J7 | 40A7 | Ignition switch feeds. |
| J8 | 50A7 | Instrument panel fuses F11, F13, F15, F17. |
| J9 | 30A7 | Starter motor solenoid. |
| J10 | 60A7 | Power distribution box fuse M1-1. Power brake assist motor (HydroMax). |
| J11 | 30A7 | Trailer tow electronic brake. |
| J12 | 60A7 | Lighting primary. |
| J13 | 20A7 | Brake on/off signal. Hazard lamps. |
| J14 | 20A7 | Horn. |
| J15 | 60A7 | HydroMax anti-lock brake system module. |
| J16 | 20A7 | Trailer tow parking lamps. |
6Mini fuse.7J case fuse.
Diode and Relay Module
Locate the module box with the power distribution box in from of the radiator.
| Relay Number | Protected Component |
|---|---|
| 1 | Not used. |
| 2 | Not used. |
| 3 | Not used. |
| 4 | Daytime running lamps power relay. |
| 5 | HydroMax – brake on/off signal isolating relay. |
| 6 | Reverse lamps relay. |
| 7 | Starter ground relay. |
| 8 | Trailer tow parking lamps relay. |
Fuse Holder ModuleThe fuse holder is next to the diode and relay module.
| Fuse Number | Fuse Rating | Protected Component |
|---|---|---|
| 1 | 10A8 | Break on/off relay feed (HydroMax module). |
| 2 | 10A8 | Brake transmission shift interlock. |
8Micro 2 fuse.
F53 Passenger Compartment Fuse Panel
Locate this fuse panel below and to the left of the steering wheel near the brake pedal. Remove the panel cover to access the fuses.To remove a fuse, use the fuse panel cover’s fuse puller tool.
| Fuse or Relay Number | Fuse Rating | Protected Component |
|---|---|---|
| 1 | 20A9 | Multifunction switch. |
| 2 | — | Not used. |
| 3 | — | Not used. |
| 4 | 10A9 | Instrument cluster. |
| 5 | 10A9 | Body builder accessory feed (accessory and run). |
| 6 | — | Not used. |
| 7 | 15A9 | Blower motor relay coil. |
| 8 | 10A9 | Brake lamps feed. Trailer brake control module Brake on/off signal. Trailer turn relay coils. |
| 9 | — | Not used. |
| 10 | 10A9 | Instrument cluster memory. |
| 11 | 30A9 | Wiper/washer module. Wiper feed. |
| 12 | — | Not used. |
| 13 | 10A9 | Anti-lock brake system module – HydroMax. |
| 14 | 10A9 | Anti-lock brake system module – Hydroboost. Instrument cluster run/start. |
| 15 | 15A9 | Left-hand direction indicator feed. |
| 16 | 20A9 | Body builder battery (+12V) feed. |
| 17 | 5A9 | Body builder radio feed. |
| 18 | — | Not used. |
| 19 | 5A9 | Daytime running lamps relays. |
| 20 | — | Not used. |
| 21 | 15A9 | Right-hand direction indicator feed. |
| 22 | 20A9 | Trailer tow direction indicators. |
| 23 | 10A9 | Cluster run/accessory. |
| 24 | — | Not used. |
| 25 | 10A9 | Body builder right-hand low beam headlamp feed. |
| 26 | — | Not used. |
| 27 | — | Not used. |
| 28 | — | Not used. |
| 29 | — | Not used. |
| 30 | — | Not used. |
| 31 | 10A9 | Body builder left-hand low beam headlamp feed. |
| 32 | — | Not used. |
| 33 | 10A9 | Body builder reverse lamp power. |
| 34 | 10A9 | Body builder reverse gear. Trailer tow reverse lamps. |
| 35 | 20A9 | Body builder high beam feed. High beam indicator. |
| 36 | 10A9 | Transmission control switch. |
| 37 | — | Not used. |
| 38 | 10A9 | Body builder off/run. |
| 39 | — | Not used. |
| 40 | — | Not used. |
| 41 | 10A9 | Instrument cluster lighting/switch illumination. |
| 42 | — | Not used. |
| 43 | — | Not used. |
| 44 | — | Not used. |
| Relay 1 | — | Trailer tow right-hand direction indicator. |
| Relay 2 | — | Trailer tow left-hand direction indicator. |
| Relay 3 | — | Right-hand direction indicator. |
| Relay 4 | — | Left-hand direction indicator. |
| Relay 5 | — | Not used. |
| Relay 6 | — | Daytime running lamps. Parking brake. |
| Relay 7 | — | Daytime running lamps on/off. |
| Diode 1 | — | Not used. |
| Diode 2 | — | Not used. |
| F1 | — | Not used. |
| F2 | — | Not used. |
| F3 | — | Not used. |
| F4 | — | Not used. |
| F5 | — | Not used. |
| F6 | — | Not used. |
| F7 | — | Not used. |
| F8 | — | Not used. |
| F9 | — | Not used. |
| F10 | — | Not used. |
| F11 | — | Not used. |
| F12 | — | Not used. |
9Micro 2 fuse.
F59 and UPS Passenger Compartment Fuse Panel
| Fuse or Relay Number | Fuse Rating | Protected Component |
|---|---|---|
| F1 | — | Not used. |
| F2 | 20A | Right/left rear direction indicator. Right/left direction indicator relay coil. Instrument cluster right/direction indicator. |
| F3 | 15A | Left turn signal. Hazard lamps. |
| F4 | 15A | Blower motor relay coil. |
| F5 | 15A | Right front/rear direction indicator. Right front/rear hazard lamp. |
| F6 | 10A | Anti-lock brake system module (HydroMax). |
| F7 | 10A | Right low beam headlamp. |
| F8 | 5A | Daytime running lamps relays. |
| F9 | 10A | Left low beam headlamp. |
| F10 | 10A | Transmission control switch. |
| F11 | 10A | Cluster battery (+12V) #1. |
| F12 | — | Not used. |
| F13 | 10A | Cluster battery (+12V) #2. |
| F14 | 10A | Switch illumination. Instrument cluster lighting. |
| F15 | 20A | Body builder battery (+12V) feed. |
| F16 | — | Not used. |
| F17 | 20A | Trailer tow direction indicators. Trailer tow stop lamps. Trailer tow hazard lamps. |
| F18 | 10A | Body builder off/run. |
| F19 | 10A | Trailer brake control module brake on/off signal. Body builder brake lamps. Left/right brake lamps. |
| F20 | 10A | Body builder run/accessory feed. |
| F21 | 10A | Anti-lock brake system module. Hydroboost. Instrument cluster. |
| F22 | 30A | Wiper/washer module. Wiper feed. |
| F23 | 10A | Reverse lamps. |
| F24 | 5A | Body builder radio feed. |
| F25 | 10A | Trailer tow reverse lamps. |
| F26 | 10A | Cluster run/accessory. |
| F27 | 20A | High beam indicator. Headlamps hi-beam. |
| R1 | Micro relay | Daytime running lamps. Parking brake. |
| R2 | Micro relay | Daytime running lamps on/off. |
| R3 | Micro relay | Right-hand direction indicator. |
| R4 | Micro relay | Trailer tow right-hand direction indicator. |
| R5 | Micro relay | Left-hand direction indicator. |
| R6 | Micro relay | Trailer tow left-hand direction indicator. |
| R7 | — | Not used. |
| R8 | — | Not used. |
| R9 | — | Not used. |
| D1 | — | Not used. |
| D2 | — | Not used. |
| D3 | — | Not used. |
2019 Ford F-53 Motorhome Owners Manual
Changing a Fuse
Fuses
| WARNING: Always replace a fuse with one that has the specified amperage rating. Using a fuse with a higher amperage rating can cause severe wire damage and could start a fire. |
| Callout | Fuse Type |
|---|---|
| A | Micro 2 |
| B | Micro 3 |
| C | Maxi |
| D | Mini |
| E | M Case |
| F | J Case |
| G | J Case Low Profile |