FORD 2004 E-450 v.2 - Manual (Page 150)

The relays are coded as follows:
Relay location Description
1 Interior lamps
2 Open
3 Roof marker lamps
4 Battery saver
Engine compartment relay module
The engine compartment relay module is located in one of two places
depending on which type of engine your vehicle is equipped with:
• Gasoline engine: driver side of the engine compartment above the
brake master cylinder.
• Diesel engine: passenger side of the engine compartment behind the
power distribution box.
Have a certified technician or your dealer service this module, if
required.
The relays are coded as follows:
Relay location Description
1 Trailer tow left turn
2 A/C control
3 PCM back-up lamp
4 Trailer tow right turn
2004 Econoline (eco)
Owners Guide (post-2002-fmt)
USA English (fus)
Roadside Emergencies
150