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