trailer FORD F-53 2018 Owner's Manual

Protected Components
Fuse Rating
Fuse or Relay
Number
Instrument panel battery feed (fuse #15,
21).
60A 2
J15
Lighting primary fuse.
Horn.
20A 2
J16
Ignition switch feed (instrument panel
fuses #5, 11, 17, 23, 38).
40A 2
J17
Brake on/off switch.
20A 2
J18
Multifunction switch.
Not used.
—
J19
Not used.
—
J20
Not used.
—
J21
Reverse lamp relay coil.
20A 2
J22
A/C clutch relay coil.
A/C demand switch.
Horn relay.
—
R1
Fuel pump relay.
—
R2
Starter relay.
—
R3
Backup lamps relay.
—
R4
Brake on/off signal isolating relay
(Hydromax).
—
R5
Trailer tow parking lamps relay.
—
R6
Not used.
—
R7
A/C clutch relay.
—
R8
Not used.
—
R9
Starter relay.
—
R10
Blower motor relay.
—
R11
Daytime running lamp/headlamp relay.
—
R12
Powertrain control module relay.
—
R13
Fuel pump diode.
—
D1
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing Fuses

Protected Components
Fuse Rating
Fuse or Relay
Number
Air conditioning clutch diode.
—
D2
Not used.
—
D3
Not used.
—
C1
1 Mini fuse.
2 J case fuse.
UPS Power Distribution Box 1 Protected Components
Fuse Rating
Fuse or Relay
Number
Powertrain control module.
Relay
R1
Daytime running lamps.
Relay
R2
Starter motor.
Relay
R3
Blower motor.
Relay
R4
Horn.
Relay
R5
Fuel pump.
Relay
R6
Starter ground.
Relay
R7
Trailer tow parking lamps.
Relay
R8
Backup lamps.
Relay
R9
Hydromax brake on/off relay.
Relay
R10
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing FusesE172543

Protected Components
Fuse Rating
Fuse or Relay
Number
Not used.
Relay
R11
Not used.
Relay
R12
Hydromax brake on/off relay.
10A
M1-1
Brake shift Interlock (Column shift).
10A
M1-2
Power brake assist module (Hydromax).
5A
M1-3
Powertrain control module.
10A
M1-4
UPS Power Distribution Box 2 Protected Components
Fuse Rating
Fuse or Relay
Number
Backup lamp feed.
25A 1
M1
Trailer tow backup lamp feed.
Daytime running lamps.
20A 1
M2
4–channel anti-lock brake system module
(Hydromax).
30A 1
M3
Powertrain control module run/start.
20A 1
M4
Fuel pump relay coil.
Fuel pump diode.
Brake lamps.
10A 1
M5
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing FusesE172544

Protected Components
Fuse Rating
Fuse or Relay
Number
Headlamp daytime running lamp relay
feed.
High beam headlamps flash to pass.
(Instrument panel fuses #25, 31).
Ignition switch feeds (instrument panel
fuses #F26).
40A 2
J6
Instrument panel fuses #F24, F22, F20,
F26, F21, F8, F6, F4, F2.
40A 2
J7
Power distribution box fuses M4, M1-4.
Instrument panel fuses F11, F13, F15, F17.
50A 2
J8
Starter relay feed.
30A 2
J9
Starter motor solenoid.
Power distribution box fuse M1-1.
60A 2
J10
Power brake assist motor (HydroMax).
Trailer tow electronic brake.
30A 2
J11
Lighting primary.
60A 2
J12
Power distribution box fuse M1-2.
Instrument panel fuses #F19, F5, F3.
Brake on/off.
20A 2
J13
Hazard.
Horn.
20A 2
J14
HydroMax anti-lock brake system module.
60A 2
J15
Trailer tow parking lamps.
20A 2
J16
1 Mini fuse.
2 J case fuse.
Diode and Relay Module
Locate the module box with the power
distribution box in from of the radiator.
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing Fuses

Protected Components
Relay Number
Not used.
1
Not used.
2
Not used.
3
Daytime running lamps power relay.
4
HydroMax – brake on/off signal isolating relay.
5
Reverse lamps relay.
6
Starter ground relay.
7
Trailer tow parking lamps relay.
8
Fuse Holder Module
The fuse holder is next to the diode and
relay module. Protected Components
Fuse Rating
Fuse Number
Break on/off relay feed (HydroMax
module).
10A
1
Brake transmission shift interlock.
10A
2
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Protected Components
Fuse Rating
Fuse or Relay
Number
Blower motor relay coil.
15A
7
Brake lamps feed.
10A
8
Trailer brake control module
Not used.
—
9
Instrument cluster memory.
10A
10
Wiper/washer module.
30A
11
Wiper feed.
Not used.
—
12
Anti-lock brake system module –
HydroMax.
10A
13
Anti-lock brake system module – Hydro-
boost.
10A
14
Instrument cluster run/start.
Left-hand direction indicator feed.
15A
15
Body builder battery (+12V) feed.
20A
16
Body builder radio feed.
5A
17
Not used.
—
18
Daytime running lamps relays.
5A
19
Not used.
—
20
Right-hand direction indicator feed.
15A
21
Trailer tow direction indicators.
20A
22
Cluster run/accessory.
10A
23
Not used.
—
24
Body builder right-hand low beam head-
lamp feed.
10A
25
Not used.
—
26
Not used.
—
27
Not used.
—
28
Not used.
—
29
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing Fuses

Protected Components
Fuse Rating
Fuse or Relay
Number
Not used.
—
30
Body builder left-hand low beam head-
lamp feed.
10A
31
Not used.
—
32
Body builder reverse lamp power.
10A
33
Body builder reverse gear.
10A
34
Trailer tow reverse lamps.
Body builder high beam feed.
20A
35
High beam indicator.
Transmission control switch.
10A
36
Not used.
—
37
Body builder off/run.
10A
38
Not used.
—
39
Not used.
—
40
Instrument cluster lighting/switch illumin-
ation.
10A
41
Not used.
—
42
Not used.
—
43
Not used.
—
44
Trailer tow right-hand direction indicator.
—
Relay 1
Trailer tow left-hand direction indicator.
—
Relay 2
Right-hand direction indicator.
—
Relay 3
Left-hand direction indicator.
—
Relay 4
Not used.
—
Relay 5
Daytime running lamps.
—
Relay 6
Parking brake.
Daytime running lamps on/off.
—
Relay 7
Not used.
—
Diode 1
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing Fuses

Protected Components
Fuse Rating
Fuse or Relay
Number
Right low beam headlamp.
10A
F7
Daytime running lamps relays.
5A
F8
Left low beam headlamp.
10A
F9
Transmission control switch.
10A
F10
Cluster battery (+12V) #1.
10A
F11
Not used.
—
F12
Cluster battery (+12V) #2.
10A
F13
Switch illumination.
10A
F14
Instrument cluster lighting.
Body builder battery (+12V) feed.
20A
F15
Not used.
—
F16
Trailer tow direction indicators.
20A
F17
Trailer tow stop lamps.
Trailer tow hazard lamps.
Body builder off/run.
10A
F18
Trailer brake control module Brake on/off
signal.
10A
F19
Body builder brake lamps.
Left/right brake lamps.
Body builder run/accessory feed.
10A
F20
Anti-lock brake system module.
10A
F21
Instrument cluster.
Wiper/washer module.
30A
F22
Wiper feed.
Reverse lamps.
10A
F23
Body builder radio feed.
5A
F24
Trailer tow reverse lamps.
10A
F25
Cluster run/accessory.
10A
F26
High beam indicator.
20A
F27
Daytime running lamps.
Micro relay
R1
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing Fuses

Protected Components
Fuse Rating
Fuse or Relay
Number
Parking brake.
Daytime running lamps on/off.
Micro relay
R2
Right-hand direction indicator.
Micro relay
R3
Trailer tow right-hand direction indicator.
Micro relay
R4
Left-hand direction indicator.
Micro relay
R5
Trailer tow left-hand direction indicator.
Micro relay
R6
Not used.
—
R7
Not used.
—
R8
Not used.
—
R9
Not used.
—
D1
Not used.
—
D2
Not used.
—
D3
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.
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When this occurs, your vehicle still
operates, however:
•
Engine power is limited.
• The air conditioning system turns off.
Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you
can re-start the engine. Have your vehicle
checked as soon as possible to minimize
engine damage.
When Fail-Safe Mode Is Activated WARNINGS
Fail-safe mode is for use during
emergencies only. Operate your
vehicle in fail-safe mode only as long
as necessary to bring your vehicle to rest
in a safe location and seek immediate
repairs. When in fail-safe mode, your
vehicle will have limited power, will not be
able to maintain high-speed operation, and
may completely shut down without
warning, potentially losing engine power,
power steering assist, and power brake
assist, which may increase the possibility
of a crash resulting in serious injury. Never remove the coolant reservoir
cap when the engine is running or
hot.
Your vehicle has limited engine power
when in the fail-safe mode, drive your
vehicle with caution. Your vehicle does not
maintain high-speed operation and the
engine may operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely
possible and switch the engine off. 2. If you are a member of a roadside
assistance program, we recommend
that you contact your roadside
assistance service provider.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level. If the coolant level is at or below the minimum mark,
add prediluted coolant immediately.
5. When the engine temperature cools, you can re-start the engine. Have your
vehicle checked as soon as possible to
minimize engine damage.
Note: Driving your vehicle without repair
increases the chance of engine damage.
Engine Coolant Temperature
Management (If Equipped) WARNING
To reduce the risk of crash and injury,
be prepared that the vehicle speed
may reduce and the vehicle may not
be able to accelerate with full power until
the coolant temperature reduces. If you tow a trailer with your vehicle, the
engine may temporarily reach a higher
temperature during severe operating
conditions, for example ascending a long
or steep grade in high ambient
temperatures.
At this time, you may notice the coolant
temperature gauge moves toward the red
zone and a message may appear in the
information display.
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Motorhome (TY3) Canada/United States of America, enUSA, Edition date: 201712, Second Printing Maintenance