2008 FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS Owners Manual

Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
32 10A Backup lamp feed
33 10A Reverse lamps
34 10A Trailer tow reverse lamps, Body
builder reverse gear
35 20A Body builder high beam feed,
High beam indicator
36 — Not used
37 — Not used
38 10A Body builder run feed
39 — Not used
40 — Not used
41 10A Instrument illumination
42 — Not used
43 — Not used
44 — Not used
Relay 1 — Trailer tow right turn signal
Relay 2 — Trailer tow left turn signal
Relay 3 — Right turn signal
Relay 4 — Left turn signal
Relay 5 — Not used
Relay 6 — Not used
Relay 7 — Not used
Relay 8 — Not used
Relay 9 — DRL on/off
Relay 10 — DRL, Parking brake
*Vehicles with Hydromax brake assist only
2008 Motorhome(mot)
Supplement
USA(fus)
Roadside Emergencies
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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.
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.
If the battery has been disconnected and reconnected, refer to the
Batterysection of theMaintenance and Specificationschapter.
2008 Motorhome(mot)
Supplement
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Roadside Emergencies
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The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
1 5A* Power brake assist module***
2 10A* A/C compressor clutch
3 20A* A/C clutch relay coil, Mass Air
Flow Sensor (MAFS) with IAT,
Vapor Management Valve, Engine
Heated Exhaust Gas Oxygen
(HEGO) sensor #11, HEGO #21
4 5A* Powertrain Control Module (PCM)
memory
5 20A* PCM power
6 20A* Park lamp feeds, Instrument panel
fuse #41, Warning chime module,
Trailer tow running lamp relay
coil, I/P dimmer module
7 20A* Ignition coils, Radio capacitors
8 10A* Stoplamp switch (logic): Power
brake assist module***, Speed
control module, PCM, Anti-lock
Brake System (ABS) module,
Brake shift interlock actuator
9 10A* Starter main relay coil, Starter
ground relay coil
10 20A* Daytime Running Lamps (DRL)
11 20A* Fuel pump relay coil, PCM power
12 25A* Trailer tow back-up lamps feed, IP
- backup lamp feed
13 30A** Trailer tow electric brake
controller feed
14 60A** IP battery feed (fuse #9, 15, 21)
15 20A Trailer tow park lamps
16 60A** ABS module
2008 Motorhome(mot)
Supplement
USA(fus)
Roadside Emergencies
67

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
17 20A** Horn feed
18 20A** Transmission control indicator
light, Tow/haul switch
19 — Not used
20 30A** PCM relay coil, PCM relay (PDB
fuses#3,5,7,17)
21 20A** Fuel pump motor, Fuel injectors
22 20A** Diagnostic tool connector, Cigar
lighter feed
23 40A** Blower motor feed
24 50A** IP battery feed (fuses #4, 10, 16,
22)
25 40A** Ignition switch feed (IP fuses #1,
5, 7, 11, 13, 14, 17, 19, 23; PDB
fuses #9, 11)
26 40A** Ignition switch feed (IP fuses #5,
11, 17, 23, 26, 27, 32, 38)
27 30A** Multifunction switch (headlamps)
28 30A** Starter solenoid
29 60A** Power brake assist motor***
Relay 1 — A/C clutch
Relay 2 — Fuel pump relay
Relay 3 — Horn relay
Relay 4 — Starter relay
Relay 5 — Blower motor relay
Relay 6 — PCM relay
Diode 1 — Fuel pump diode
Diode 2 — A/C clutch diode
* Mini Fuses ** Maxi Fuses ***Vehicles with Hydromax brake assist
only
2008 Motorhome(mot)
Supplement
USA(fus)
Roadside Emergencies
68

Diode/Relay module
The module box is located by the power distribution box in front of the
radiator in the engine compartment.
The components are coded as follows:
Relay location Description
1 One touch integrated start (ATO diode)
2 Not used
3 Not used
4 DRL power (relay)
5 Reverse lamps (relay)
6 Trailer tow parking lamps (relay)
7 Not used
8 Starter ground (relay)
CHANGING A FLAT TIRE
If you get a flat tire while driving:
•do not brake heavily.
•gradually decrease the vehicle’s speed.
•hold the steering wheel firmly.
•slowly move to a safe place on the side of the road.
Dissimilar spare tire/wheel information
WARNING:Failure to follow these guidelines could result in an
increased risk of loss of vehicle control, injury or death.
If you have a dissimilar spare tire/wheel, then it is intended for
temporary use only. This means that if you need to use it, you should
2008 Motorhome(mot)
Supplement
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replace it as soon as possible with a road tire/wheel that is the same size
and type as the road tires and wheels that were originally provided by
Ford. If the dissimilar spare tire or wheel is damaged, it should be
replaced rather than repaired.
A dissimilar spare tire/wheel is defined as a spare tire and/or wheel that
is different in brand, size or appearance from the road tires and wheels
and can be one of three types:
1.T-type mini-spare:This spare tire begins with the letter “T” for tire
size and may have “Temporary Use Only” molded in the sidewall
2.Full-size dissimilar spare with label on wheel:This spare tire has
a label on the wheel that states: “THIS TIRE AND WHEEL FOR
TEMPORARY USE ONLY”
When driving with one of the dissimilar spare tires listed above,do not:
•Exceed 50 mph (80 km/h)
•Load the vehicle beyond maximum vehicle load rating listed on the
Safety Compliance Label
•Tow a trailer
•Use snow chains on the end of the vehicle with the dissimilar spare
tire
•Use more than one dissimilar spare tire at a time
•Use commercial car washing equipment
•Try to repair the dissimilar spare tire
Use of one of the dissimilar spare tires listed above at any one wheel
location can lead to impairment of the following:
•Handling, stability and braking performance
•Comfort and noise
•Ground clearance and parking at curbs
•Winter weather driving capability
•Wet weather driving capability
3.Full-size dissimilar spare without label on wheel
When driving with the full-size dissimilar spare tire/wheel,do not:
•Exceed 70 mph (113 km/h)
•Use more than one dissimilar spare tire/wheel at a time
•Use commercial car washing equipment
2008 Motorhome(mot)
Supplement
USA(fus)
Roadside Emergencies
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•Use snow chains on the end of the vehicle with the dissimilar spare
tire/wheel
The usage of a full-size dissimilar spare tire/wheel can lead to
impairment of the following:
•Handling, stability and braking performance
•Comfort and noise
•Ground clearance and parking at curbs
•Winter weather driving capability
•Wet weather driving capability
•All-Wheel driving capability (if applicable)
•Load leveling adjustment (if applicable)
When driving with the full-size dissimilar spare tire/wheel additional
caution should be given to:
•Towing a trailer
•Driving vehicles equipped with a camper body
•Driving vehicles with a load on the cargo rack
Drive cautiously when using a full-size dissimilar spare tire/wheel and
seek service as soon as possible.
Stopping and securing the vehicle
1. Park on a level surface.
2. Activate the warning flashers.
3. Place the gearshift in P (Park).
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4. Apply the parking brake and turn
engine OFF.
Tire change procedure
WARNING:To help prevent the vehicle from moving when you
change a tire, be sure the parking brake is set, then block (in
both directions) the wheel that is diagonally opposite (other side and
end of the vehicle) to the tire being changed.
WARNING:Do not attempt to change a tire on the side of the
vehicle close to moving traffic. Pull far enough off the road to
avoid the danger of being hit when operating the jack or changing the
wheel.
1. Block the wheel that is diagonally
opposite the tire you are changing.
The parking brake is on the
transmission. Therefore, the vehicle
will not be prevented from moving
when a rear wheel is lifted, even if
the parking brake is applied. Be sure to block both directions of the
wheel that is diagonally opposite to the wheel that is being lifted.
WARNING:If the vehicle slips off the jack, you or someone else
could be seriously injured.
2. Remove the spare tire and jack from the storage location.
2008 Motorhome(mot)
Supplement
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Roadside Emergencies
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