2010 FORD F450 relay

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
Battery section of the Maintenance and Specifications chapter.
The high-current fuses are coded as follows:
Fuse/Relay
Location Fuse Amp
Rating Protected Circuits
1 Relay Blower motor/Variable blower control
(Dual zone climate control)
2 Relay Electronic shift-on-the-fly (ESOF)
Lo-Hi
3 Relay Heater mirror
4 — Not used
5 30A* Trailer brake controller (TBC)
6 40A* Anti-lock brake system (ABS) module
(Pump)
7 30A* Upfitter auxiliary switch #1
8 30A* Upfitter auxiliary switch #2 Roadside Emergencies
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)

Fuse/Relay
Location Fuse Amp
Rating Protected Circuits
9 40A* ABS module (Coil)
10 20A* Instrument panel power point/cigar
lighter
11 20A* Instrument panel power point
12 15A** Brake on/off (BOO) relay feed
13 5A** Brake switch, Brake switch relay coil,
SJB module, 4x4 module
14 — Not used
15 — Not used
16 Relay A/C clutch
17 Relay Wipers
18 Relay Fuel pump driver module (FPDM),
Fuel injectors (Gasoline engines),
Diesel fuel control module (DFCM)
(Diesel engine)
19 Relay Back-up lamps, Reverse sensing
system (RSS), Engine compartment
fuse 63
20 Relay Trailer stop/turn (Left)
21 Relay Trailer stop/turn (Right)
22 Relay Stop lamps, Center high-mounted stop
lamp (CHMSL), TBC, Customer
access
23 15A** Heater mirror, Heated spotted mirror
24 40A* Blower motor relay
25 — Not used
26 30A* ESOF relay lo-hi
27 50A* Glow plug control module (GPCM) #1
(Diesel engine only)
28 20A* Heated mirror relay
29 30A* Passenger power seat
30 10A** A/C clutch relayRoadside Emergencies
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2010 F-250/350/450/550 (f23)
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USA (fus)

Fuse/Relay
Location Fuse Amp
Rating Protected Circuits
31 15A** Power fold mirror relay
32 20A** Fuel pump relay
33 20A** Back-up lamp relay
34 25A** Trailer stop/turn relay
35 5A** ESOF relay coils
36 10A** Gasoline engines: Powertrain
control module (PCM) keep alive
power, Canister vent
Diesel engine: Engine control
module (ECM) keep alive power
37 10A** Transmission control module (TCM)
(Diesel engine only)
38 — Not used
39 50A* ECM power (Diesel engine)
40 30A* Starter relay
41 20A* Power point (Center console - front)
42 30A* Trailer park lamp relay
43 20A* Power point (Center console - rear)
44 30A* Trailer battery charge relay
45 30A* Driver power seat or memory module,
Air ride seats
46 40A* Run/Start relay
47 50A* GPCM #2 (Diesel engine only)
48 30A* ESOF relay hi-lo
49 30A* Wiper motor
50 30A* PCM relay coil, PCM relay (Gasoline
engines only)
51 — Not used
52 — Not used
53 Relay PCM power bus (Fuses 68, 70, 72, 74,
76) (Diesel engine only)
54 Relay Starter solenoid Roadside Emergencies
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)

Fuse/Relay
Location Fuse Amp
Rating Protected Circuits
55 Relay Trailer tow park lamps
56 Relay Trailer tow battery charge
57 Relay Power Distribution Box (PDB) bus
(fuses 67, 69, 71, 73, 75, 77)
SJB Run /Start bus (Fuses 29–37, 46)
58 Relay ESOF hi-lo
59 Relay PCM power bus (Fuses 68, 70, 72, 74,
76) (Gasoline engines only)
60 Diode One-touch start (OTIS)
61 Diode A/C clutch
62 Diode Fuel pump
63 15A** Trailer tow back-up lamps
64 5A** Mirror marker lamps
65 — Not used
66 — Not used
67 — Not used
68 — Not used
69 — Not used
70 10A** Gasoline engines: A/C clutch relay
coil, Refrigerant containment switch,
Heated PCV
Diesel engine: A/C clutch relay coil,
Clutch switch, Fuel pump cooler, A/C
cycle pressure switch
71 5A** Fuel pump relay diode, PCM/ECM
Run/Start power
72 15A** Gasoline engines: Ignition coils
Diesel engine: Engine TCM
73 2A** Reverse Camera System (RCS)Roadside Emergencies
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2010 F-250/350/450/550 (f23)
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USA (fus)

Fuse/Relay
Location Fuse Amp
Rating Protected Circuits
74 20A** Gasoline engines: Vehicle power
(VPWR): Heated exhaust gas oxygen
sensor, CMS, Mass air flow sensor,
Electronic vapor management valve,
CMCV, Variable cam timing, IMTV
Diesel engine: VPWR: Engine loads
75 5A** Back-up relay coil power
76 20A** Gasoline engines: VPWR: PCM
Diesel engine: VPWR: ECM
77 10A** ABS module logic
* Cartridge fuses ** Mini fuses
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.
Your vehicle may be equipped with a conventional spare tire that is
different in one or more of the following: type, brand, size, speed rating
and tread design. If this is the case, this dissimilar spare tire is still rated
for your vehicle loads (GAWR and GVWR). Temporary spare tires are not
equipped with Tire Pressure Monitor System (TPMS) sensors if the
system is present.
WARNING: The use of tire sealant may damage your Tire
Pressure Monitoring System (if equipped) and should not be
used.
WARNING: If your vehicle is equipped with a Tire Pressure
Monitoring System, refer to Tire Pressure Monitoring System
(TPMS) in the Tires, Wheels and Loading chapter for more
information. If the tire pressure monitor sensor becomes damaged, it
will no longer function. Roadside Emergencies
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USA (fus)

Power adjustable foot pedals ...131
Power distribution box (see
Fuses) ........................................310
Power door locks ......................148
Power mirrors ...........................127
Power point ...............................123
Power steering ..........................272
fluid, checking and adding ....382
fluid, refill capacity ................391
Power Windows .........................124
Preparing to drive your
vehicle ........................................273
R
Radio ................................42, 44, 51
Rear seat entertainment
system ..........................................67
Rear-view camera system .........282
Relays ........................................306
Remote entry system ...............152
illuminated entry ....................157
locking/unlocking
doors ................................148, 153
replacing the batteries ...........155
Reverse sensing system ...........280
Roadside assistance ..................303
S
Safety belts (see Safety
restraints) ..........................173–178
Safety defects, reporting ..........344
Safety restraints ................173–178
Belt-Minder
...........................181
extension assembly ................184
for adults .........................174–178 for children .............................195
lap belt ....................................179
warning light and
chime ...............................180–181
Safety restraints - LATCH
anchors ......................................207
Safety seats for children ..........199
Safety Compliance
Certification Label ....................395
Satellite Radio Information ........64
Seats ..........................................164
child safety seats ....................199
cleaning ...................................352
heated ......................................102
memory seat ...................154, 169
SecuriCode keyless entry
system ........................................157
SecuriLock passive anti-theft
system ................................159, 161
Servicing your vehicle ..............355
Setting the clock
AM/FM/CD .................................46
AM/FM/In-dash 6 CD ................53
Snowplowing .................7, 300–301
SOS Post Crash Alert ...............189
Spark plugs,
specifications .....................390, 395
Special notice ................................8
ambulance conversions ..............7
diesel-powered vehicles .............7
four-wheel drive vehicles .......302
utility-type vehicles ....................7
Speed control ............................131
Starting your vehicle ........264–266
jump starting ..........................331
Steering wheel
controls ....................................134 Index
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2010 F-250/350/450/550 (f23)
Owners Guide, 2nd Printing
USA (fus)