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fuel pump relay--EDIT w/Graphic from Wiring Diagram PDF 900 1995

posted by  Volvodad on  Tue Apr 19 14:46 CST 2011
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last visit: Thu Oct 23 16:18 CST 2014
[RELATED]

Our 940 (California market, B230FD) has the "blue cube" Hella-made-in-Spain fuel pump relay, as Spook described. In my Green Book wiring diagram for the car, this relay is shown with an internal diode across the coil.

I'm not an electronics guy, but I believe this is to prevent voltage spikes from the relay coil from feeding back into the ECU, which triggers this relay. Could be the other part no. relay is identical, with diode, but it would pay to make sure.
--
Bob: son's 81-GL, dtr's '94-940, my 83-DL, 89-745(V8) and 98-S90. Also 77-MGB and some old motorcycles.






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