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2018 Ford F-53 Motorhome Fuse Box Diagram
Contents hide
1 FUSE SPECIFICATION CHART
2 CHANGING A FUSE

FUSE SPECIFICATION CHART

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 will need to reset some features.   See   Changing the 12V Battery. 

Fuse or Relay Number Fuse Rating Protected Components
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.   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.
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.   (Instrument panel fuses #25, 31).
28 30A2 Starter relay feed.   Starter motor solenoid.
29 60A2 Power brake assist motor – HydroMax.   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 Components
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.   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.   Daytime running lamps on/off relay coil.   Headlamp daytime running lamp relay feed.   Instrument panel fuses #25, 31.
J3 30A4 Vehicle power.   Powertrain control module relay feed.   Power distribution box fuse F16, F17, F18, J22.
J4 20A4 Cigar lighter feed.   Diagnostic tool connector.
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 #4, 10, 16, 22.
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 #1, 5, 7, 11, 13, 14, 17, 19, 23, 36).   (Power distribution box fuse #F19, F22, F21).
J14 — Not used.
J15 60A4 Instrument panel battery feed (fuse #15, 21).   Lighting primary fuse.
J16 20A4 Horn.
J17 40A4 Ignition switch feed (instrument panel fuses #5, 11, 17, 23, 38).
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 Components
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 10A Hydromax brake on/off relay.
M1-2 10A Brake shift Interlock (Column shift).
M1-3 5A Power brake assist module (Hydromax).
M1-4 10A Powertrain control module.

UPS Power Distribution Box 2

Fuse or Relay Number Fuse Rating Protected Components
M1 25A5 Backup lamp feed.   Trailer tow backup lamp feed.
M2 20A5 Daytime running lamps.
M3 30A5 4–channel anti-lock brake system module (Hydromax).
M4 20A5 Powertrain control module run/start.   Fuel pump relay coil.   Fuel pump diode.
M5 10A5 Brake lamps.
M6 20A5 Radio capacitors.   Ignition coils.
M7 20A5 Backup lamp relay coil.   Air conditioning clutch coil.   Air conditioning demand switch.
M8 20A5 Catalyst monitor sensor.   Engine heated exhaust gas oxygen sensor #11 and #21.   Vapor management valve.
M9 20A5 Powertrain control module power.
M10 5A5 Brake shift Interlock
M11 5A5 Powertrain control module relay keep alive power.   Powertrain control module relay coil.
M12 20A5 Parking lamps feed.
D1 Diode Not used.
D2 Diode Fuel pump.
D3 Diode Air conditioning clutch.
R2-1 — Not used.
J1 30A6 Powertrain control module relay feed (power distribution box fuse M6, M7, M8, M9).
J2 20A6 Fuel injectors.   Fuel pump motor.   Mass airflow sensor.   Powertrain control module.
J3 20A6 Cigar lighter power point.   Diagnostic connector.
J4 40A6 Blower motor.
J5 30A6 Headlamps.   Daytime running lamps on/off relay coil.   Headlamp daytime running lamp relay feed.   High beam headlamps flash to pass.   (Instrument panel fuses #25, 31).
J6 40A6 Ignition switch feeds (instrument panel fuses #F26).
J7 40A6 Instrument panel fuses #F24, F22, F20, F26, F21, F8, F6, F4, F2.   Power distribution box fuses M4, M1-4.
J8 50A6 Instrument panel fuses F11, F13, F15, F17.
J9 30A6 Starter relay feed.   Starter motor solenoid.
J10 60A6 Power distribution box fuse M1-1.   Power brake assist motor (HydroMax).
J11 30A6 Trailer tow electronic brake.
J12 60A6 Lighting primary.   Power distribution box fuse M1-2.   Instrument panel fuses #F19, F5, F3.
J13 20A6 Brake on/off.   Hazard.
J14 20A6 Horn.
J15 60A6 HydroMax anti-lock brake system module.
J16 20A6 Trailer tow parking lamps.

5Mini fuse.6J case fuse.

Diode and Relay Module

Locate the module box with the power distribution box in from of the radiator.

Relay Number Protected Components
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 Components
1 10A Break on/off relay feed (HydroMax module).
2 10A Brake transmission shift interlock.

F53 Passenger Compartment Fuse PanelLocate 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 Components
1 20A Multi function switch.
2 — Not used.
3 — Not used.
4 10A Instrument cluster.
5 10A Body builder accessory feed (accessory and run).
6 — Not used.
7 15A Blower motor relay coil.
8 10A Brake lamps feed.   Trailer brake control module
9 — Not used.
10 10A Instrument cluster memory.
11 30A Wiper/washer module.   Wiper feed.
12 — Not used.
13 10A Anti-lock brake system module – HydroMax.
14 10A Anti-lock brake system module – Hydroboost.   Instrument cluster run/start.
15 15A Left-hand direction indicator feed.
16 20A Body builder battery (+12V) feed.
17 5A Body builder radio feed.
18 — Not used.
19 5A Daytime running lamps relays.
20 — Not used.
21 15A Right-hand direction indicator feed.
22 20A Trailer tow direction indicators.
23 10A Cluster run/accessory.
24 — Not used.
25 10A Body builder right-hand low beam headlamp feed.
26 — Not used.
27 — Not used.
28 — Not used.
29 — Not used.
30 — Not used.
31 10A Body builder left-hand low beam headlamp feed.
32 — Not used.
33 10A Body builder reverse lamp power.
34 10A Body builder reverse gear.   Trailer tow reverse lamps.
35 20A Body builder high beam feed.   High beam indicator.
36 10A Transmission control switch.
37 — Not used.
38 10A Body builder off/run.
39 — Not used.
40 — Not used.
41 10A 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.

F59 and UPS Passenger Compartment Fuse Panel

Fuse or Relay Number Fuse Rating Protected Components
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.   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.
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.

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.

If electrical components in the vehicle are not working, a fuse may have blown. Blown fuses are identified by a broken wire within the fuse. Check the appropriate fuses before replacing any electrical components.

Fuse Types:

Callout Fuse Type
A Micro 2
B Micro 3
C Maxi
D Mini
E M Case
F J Case
G J Case Low Profile

To download the complete user manual, please download the following file:

https://www.fordservicecontent.com/Ford_Content/vdirsnet/OwnerManual/Home/Index?Variantid=4635&languageCode=EN&countryCode=USA&marketCode=US&bookcode=O37568&VIN=&userMarket=usa&div=f
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3 years ago

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