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Fuse/Relay
Location
Fuse Amp
Rating
Power Distribution Box Description
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 — Not used
74 20A** Gasoline engines: VPWR: HEGO, CMS,
MAFS, EVMV, CMCV, VCT, 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).
2008 F-250/350/450/550 (f23)
Owners Guide (post-2002-fmt)
USA (fus)
Roadside Emergencies
277