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94 940 ECT Reference Voltage 900 1994

posted by  Amarin on  Sun Jan 12 16:36 CST 2020
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last visit: Thu Oct 23 22:42 CST 2014
[RELATED]

Should check resistance at fuel ECU connector instead (unplugged from ECU).
Diagram below from Volvo greenbook TP31397/1, Regina section:




Regarding the 5v reference its better if you have spare ECU to compare with. Used ECU could be had for less than 100USD nowadays. Some seller even offer more than 1 set (fuel & ignition) for said price. Should get one.

See:
https://www.ebay.com/itm/Volvo-REGINA-REX-940-or-740-Fuel-Ignition-ECU-Computers-Late-Style-3-SETS/401828779715?hash=item5d8edc96c3:g:NmQAAOSwiR5dPEkf

Amarin.





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