Ford 2009 E-150 Owner's Manual page 229

The high-current fuses are coded as follows.
Fuse/Relay
Location
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
2009 Econoline (eco)
Owners Guide, 1st Printing
USA (fus)
Roadside Emergencies
Fuse Amp
Rating
Micro Relay Powertrain Control Module (PCM)
Micro Relay Starter solenoid
Micro Relay Wiper
Micro Relay Trailer tow battery charge
Micro Relay Fuel pump
Micro Relay Trailer tow park lamp
Micro Relay Upfitter #4
Micro Relay Upfitter #3
Micro Relay Modified vehicle and stripped
chassis run/start
ISO IDM relay (Diesel engine only)
— Not used
40A** Modified vehicle and stripped
chassis run/start
30A** Starter solenoid relay
40A** Run start relay
40A** Modified vehicle and stripped
chassis battery
50A** Auxiliary A/C blower
Protected Circuits
229