http://www.thecarconnection.com/Enthusiasts/Ask_a_Mechanic/Ask_A_Mechanic_October_13_2006.S209.A10959.html
Automatic Shutdown Relay
It is abbreviated ASD
A Chrysler PT Cruiser does not have a reset. The automatic shutdown is a computer controlled relay.
You do not have to reset the asd relay. It is controlled by the engine computer automatically.
It is inside the under hood fuse box.
In PDC, two large relays on the B side, closest to the fender. One is the fan relay, one is the ASD relay. It may be labeled "engine relay"
It shuts down the voltage to the primary coil on the distributor, power to fuel injectors, and fuel pump also.
The fuel pump is controlled via the Automatic Shutdown Relay. This relay is located on the front fender, driver's side, behind the battery. It's the smallest relay in the group. hope this helps!
The automatic shutdown relay on a 1995 Dodge Spirit is typically located in the fuse box, which is found under the hood of the vehicle. It is often positioned near the front of the engine compartment, close to the battery. The relay is usually labeled, making it easier to identify. Always consult the vehicle's service manual for specific details and diagrams for accurate identification.
The 1989 Dodge Dakota automatic shutdown relay switch is located in the fuse box. The fuse box can be found in the engine compartment.
The automatic shutdown (ASD) relay on a 1991 Dodge Dynasty is typically located in the power distribution center, which is found under the hood near the battery. It’s usually positioned in one of the relay slots, and you can identify it by referencing the diagram on the cover of the power distribution center. If you're having trouble locating it, consult the vehicle’s service manual for more detailed information.
It is on firewall underneath brake booster, in a bracket of two relays, the other is fuel pump relay. They are bought and replaced as a pair.