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 — Powertrain control module (PCM)
relay (3.7L, 5.0L and 6.2L engines)
2 — Starter relay
3 — Blower motor relay
4 — Rear window defroster relay
5 — Electric fan relay (high speed)
6 — Trailer tow (TT) park lamp relay
7 — Run/start relay
8 — Fuel pump relay
9 — TT Battery charger relay
10 — PCM relay (3.5L engine)
11 30A** Power running board motors
12
40A** Electric fan
50A** Electric fan (6.2L with max trailer
tow, SVT Raptor)
13 30A** Starter relay power
Roadside Emergencies
341
2012 F-150 (f12)
Owners Guide, 3rd Printing
USA (fus)
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