I am trying to figure out how to bypass the fuel pump relay on my 1990 240 Wagon, but don't know which wires to affect and how. Does anyone know anything about this? Any idea where I might find an electrical schematic online?

There is a computer problem with the car and a bypass has apparently solved this before. Right now we just want to get it started so we can move out of a very expensive parking lot. Ultimately I'd like to sell it for parts.

Any thoughts would be helpful.

For a short run, jumper fuse 6 to fuse 4 (left side to left side) to run the pumps.

I assume the System relay (in same white case) does kick in with key on. If so, have relay plugged in when trying the jumper.

If it's just the ECU control that's failing, you can back-probe (ie, jam in) a grounded jumper at the Blue/Green wire on 86/2 terminal. Relay plugged in of course.

Hope this isn't too late.
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Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.