What is an EATX shutdown relay and eatx backup relay

Larry Ng is our Jeep Expert, plus he owns one and will be along shortly, but this may explain it on a different model. They share fuse boxes but not all have the EATX relay.

EATX Relay missing

ChryslerMinivan.net https://www.chryslerminivan.net > threads > eatx-relay...
EATX relay supplies power to the TCM and solenoid block; it's only used with a 4-speed transmission so yours is a 3-speed. There are other relay slots that ...

..

Flip the pdc over and look for corrison.

If you mean the electronically controlled transmission which I assume you do, the answer is no such relay..

Eatx is the transmission relay. Nothing to do with the fans. Fans quit working because of the fuse, relay,wiring, resistor, and sometimes the PCM.

Replace the fuse housing! This should fix the problem, or it may also be a ground issue. I would check for a ground fault first.
Good luck.

eatx supplies the transmission with voltage. I've never heard of an eatx safety shutdown relay. there is a transmission control relay in the pdc and that's it.

In my Rocky mountain edition there is an eatx relay. I was wondering the same thing.

There is an (auto shut down relay) located on the van in the fuse/relay panel under the hood. It controls the fire to the coil,fuel injectors alternator. (never ever heard of a (eatx relay)??? Or a (eatx backup relay)??? Hope this will help you.

No.
The ASD = Automatic Shutdown Relay
The EATX = Electronic Automatic Transmission Relay.

It might not be the relay you are hearing, but the electronic fuel pump (located in the gas tank....yeh!!!) turning on and off. Have you had this checked out??