I have an 01' f350 equipped with Kelderman suspension along with Firestone air suspension.

My air bags dropped all the way down. There are no apparent leaks.

When switched on there is no power running to the air pump.
I can run the pump by bypassing the relay. I replaced the relay and still nothing.

Switch is good. No blown fuses. Power to the relay is good where it enters the harness with no apparent damage to the harness. The ground is good.

This is where I get kind of lost. There is a possibility that the new relay is bad. My other thought is that there is some interaction between the control module that shuts off power to the relay.

Hopefully someone understands what the hay I'm talking about and has an idea of whats going on.

Thank you.