Chrysler Repair: 91 Plymouth Acclaim 2.5L, automatic, fuel pump relay, plymouth acclaim

Question
Car suddenly quit while driving.  Fuel pump does not work when ignition is engaged, but ran power directly to pump and it does work.  Replaced fuel pump relay and that did not fix.  Checked codes using check engine light and comes up code 42 which is a problem with auto shut down relay circuit.  Schematic shows an auto shut down relay, but picture of engine compartment with labels does not.  All it shows is a fuel pump relay along with 4 others.  Is there a separate auto shut down relay and if so can you help locate?  Any other ideas on what is wrong would be appreciated.   Thanks.

Answer
Hello M. Johnson,
The ASD relay is the forwardmost one of the three on the left fender shield.  (The middle one is the A.C. clutch relay, and the rear one is the fan relay. The one on the strut tower is the starter relay).
I don't believe there is a fuel pump relay, the ASD controls the fuel pump AND the power to the spark coil. You may have replaced the ASD relay thinking that it was the unique fuel pump relay, but it isn't called that because it also sends power to the spark coil. The items to check in the ASD circuit are:
Pull the ASD relay and make sure there is less than 5 ohms resistance between terminal 85 and 86 of the relay itself. If there is not, then the relay is bad. If relay passes that test, then see if the socket into which the pin 85 fits has 12v on in when you have the ignition switch "on".
If it doesn't then there is a problem between the ignition switch's dark blue wire and pin 85, or the ignition switch is not putting 12v on the dark blue wire when it is turned to the "on" position due to a bad internal switch contact, OR if you find that there is no 12v on the red wire at the ignition switch then I believe you will find that an orange fusible link in the harness of fusible links behind the battery is blown because that orange link is how the 12v for the ignition switch's red wire gets there from the battery. If all that checks out, write me a follow-up question and I'll give you some further circuit testing associated with the ASD relay.
Good luck and let me know what you find after doing these tests. It should be fixable.
Roland