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Potentiometer fixed resistor

autojoe
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7 years 5 months ago #24290 by autojoe

Potentiometer fixed resistor was created by autojoe

Paul describes two types of potentiometers. Both have voltage sensing circuits inside the pcm. What does the one with the fixed resistor between the 5 volt ref and the signal wire for? Diagnostics? Doesn't the voltage sensing circuit used for diagnostics?

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chief eaglebear
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7 years 5 months ago #24339 by chief eaglebear

Replied by chief eaglebear on topic Potentiometer fixed resistor

for sensor circuit integrity testing if there is a short to ground you will protect computer from possible overload I think that's what you were asking ?

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autojoe
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7 years 5 months ago #24352 by autojoe

Replied by autojoe on topic Potentiometer fixed resistor

Thanks for reply. Paul stated that the signal wire in a potentiometer is a sensing circuit only and no path for current flow high impedance without the 5 volt from the fixed resistor. Then without 5 volt circuit is protected.

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chief eaglebear
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7 years 5 months ago #24353 by chief eaglebear

Replied by chief eaglebear on topic Potentiometer fixed resistor

no prob bro don't be a parts changer

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