powerboy Posted August 12, 2019 Report Share Posted August 12, 2019 I try to apply analog input to special condition (brake pressure sensor and DBW safety condition). I need to create possibility fault protection by Virtual Aux, ex An volt 1 < 0.5 or An volt 1 > 4.5. I test the condition by putting an on-off switch in line of An volt 1. Noticeably, after cut off the switch of An volt 1, voltage of An volt 1 swings so long time and not below than 0.5. I wound like to ask your help about external pull down resistor. Is 100K or 1 M ohm ok for Fury without trouble to ECU and the sensor? I knows output impedance of the brake sensor but i don't known input impedance of Analog channels. Regards Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 13, 2019 Report Share Posted August 13, 2019 The max pulldown resistance you can use would be determined by the sensor rather than the ECU. 100Kohm should be fine for most common automotive sensors though. Quote Link to comment Share on other sites More sharing options...
powerboy Posted August 15, 2019 Author Report Share Posted August 15, 2019 Thank a lot Adamw Quote Link to comment Share on other sites More sharing options...
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