augusto Posted March 24, 2019 Report Share Posted March 24, 2019 Hello What is the lowest power supply voltage for the ECU to work? Augusto. Quote Link to comment Share on other sites More sharing options...
Richard Hill Posted March 24, 2019 Report Share Posted March 24, 2019 It varies from ecu to ecu but I have seen most of them drop out somewhere below 8 Volts. I think the comms goes first though so you might get a pc link disconnect before the ecu stops Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 25, 2019 Report Share Posted March 25, 2019 The ECU will shut down at about 6.8V. The A-D's start to lose accuracy below about 7.0V. Quote Link to comment Share on other sites More sharing options...
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