Roadside emergencies – FORD 2009 F-550 v.1 User Manual
Page 324
Fuse/Relay
Location
Fuse Amp
Rating
Protected 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)
2009 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)
Roadside Emergencies
324