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.
The high-current fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingProtected 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)
Roadside Emergencies
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2010 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)
Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
53 Relay PCM power bus (Fuses 68, 70, 72,
74, 76) (Diesel engine only)
54 Relay Starter solenoid
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
313
2010 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)
Power distribution box
(see Fuses) ...............................310
Power door locks ......................148
Power mirrors ...........................127
Power point ...............................124
Power steering ..........................271
fluid, checking and adding ....381
fluid, refill capacity ................390
Power Windows .........................124
Preparing to drive your
vehicle ........................................273
R
Radio ................................43, 45, 52
Rear seat entertainment
system ..........................................68
Rear-view camera system .........282
Relays ........................................305
Remote entry system ...............152
illuminated entry ....................157
locking/unlocking
doors ................................148, 153
replacing the batteries ...........155
Reverse sensing system ...........280
Roadside assistance ..................302
S
Safety belts
(see Safety restraints) .....172–177
Safety defects, reporting ..........343
Safety restraints ................172–177
Belt-Minder...........................180
extension assembly ................183
for adults .........................173–177
for children .............................194lap belt ....................................179
warning light and
chime ...............................179–180
Safety restraints - LATCH
anchors ......................................206
Safety seats for children ..........198
Safety Compliance
Certification Label ....................395
Satellite Radio Information ........65
Seats ..........................................163
child safety seats ....................198
cleaning ...................................351
heated ......................................102
memory seat ...................154, 168
SecuriCode keyless entry
system ........................................157
SecuriLock passive
anti-theft system ...............159, 161
Servicing your vehicle ..............354
Setting the clock
AM/FM/CD .................................47
AM/FM/In-dash 6 CD ................54
Snowplowing .................7, 299–300
SOS Post Crash Alert ...............188
Spark plugs,
specifications .....................389, 394
Special notice ................................7
ambulance conversions ..............7
diesel-powered vehicles .............6
four-wheel drive vehicles .......301
utility-type vehicles ....................6
Speed control ............................131
Starting your vehicle ........263–265
jump starting ..........................330
Steering wheel
controls ....................................134
tilting .......................................121
Index
406
2010 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)
