ASD location

Upper area of the firewall on the passenger side. It will have dark blue/yellow, dark blue, brown/red (twelve volts from fuse 13) and dark green wires in the connector.

Do you have a carburetor or fuel injection? What problem are you trying to solve?

The ASD relay is inside the cower module by the battery for carbureted engines. It is listed as "upper right front cowl" for fuel injected engines. I searched for quite a while, but could not find a drawing to show its location. Good thing I did not say where it was, because I just stumbled on a drawing, and it is somewhere else.

This drawing shows it to be right above the logic module which is behind the right kick panel in front of the passenger door.

The fastest way to tell if the ASD relay is working is to measure the voltage on the positive terminal on the ignition coil. This is best done with a test light as most digital voltmeters respond too slowly. You should see twelve volts there for one second when you turn on the ignition switch, then it should go to zero volts. If you see that, and/or you hear the hum of the fuel pump, the ASD relay is working and the computer has control of it.

Next, that twelve volts must come back during engine rotation, (cranking or running). If it does not, the distributor pickup assembly was the logical suspect. Those had a very high failure rate. Check if the distributor shaft is rotating during cranking. If it is not, suspect a broken timing belt.

If the twelve volts does come back during cranking, you have either a loss of spark or a loss of fuel pressure, but not both. Check for those two things to see which is missing.

Hmm wonder which page is correct? From the same source I think. But you have more experience so we will go with that.

My mind is getting numb. Your drawing is the same, but it is listed as the "fuel pump" relay. For most models, the ASD relay sent power to the injector(s), ignition coil(s), alternator field, oxygen sensor heaters, and the fuel pump, but on a few models the ASD relay turned on a separate fuel pump relay that turned on the fuel pump. They showed both relays in the wiring diagram, but I do not ever remember finding an ASD relay inside the car.

Regardless, this is a simple task of watching the voltage on the ignition coil's positive terminal. If twelve volts shows up there for one second when the ignition switch is turned on, the ASD relay and its circuit are working and there is no need to stress over where the relay is located. If the twelve volts doesn't reappear during cranking, that is a different issue. The ASD relay not turning back on is the symptom, not the cause of the problem, and we have to look at the distributor.

If twelve volts never shows up at the ignition coil, that is when we have to find the ASD relay and work in that circuit. As I hope I mentioned earlier, a test light is much more accurate for this test than a digital voltmeter. The one-second pulse can be here and gone before the voltmeter analyzes it to the point of displaying it. You will see the quick pulse with a test light very clearly.

You need to reread my second reply. You never said if you performed the voltage test at the ignition coil, or the results. That simple test would have told you if the relay was working. If the computer doesn't turn it on for that first one second, you can use a scanner to command the computer to cycle the relay on and off to test that function. The scanner will also show whether the distributor signal is showing up at the computer.