Hello Bruce; Yes, I looked at the wiring schematic, and did not see any connection either. Which does not give me a very warm feeling. That either means there is something amiss, someone has been mucking around somewhere with the wiring,or it came from the factory with a different setup that does not match the factory wiring diagrams.
If I can get #1 son out of the car for more than 20 minutes, then I guess it is trace and diagram circuit time to find out what the hey is going on.
As per the other part of this thread, my Regina equipped 940 has been one of the more reliable vehicles I have ever owned. And that includes a fair number of the exalted Toyota and Honda models, and four other Volvo's. Only one fuel pump to deal with, and no AMM. Mine even has the distributor at the front of the motor for easy access, like the 240.
Since the gentleman has not posted back on this problem, I assume he is still wrestling with it. The only other items I could think of were checking of the FI system and fuel pump grounds. Sometimes it is the simple stuff, and folks miss or forget. Or the ECU.
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Gary Gilliam Sumerduck VA, '94 940 na Regina 150k, '86 240 180k