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Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

Hvac 5v referance

  • antjmiller613
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2 years 6 months ago #61100 by antjmiller613
Hvac 5v referance was created by antjmiller613
Have a short 5v ref. the module wants to see less then 4.9v checked at module has 5.04v. My question is other then a fault in with the regulator could there be another alternative that would cause the voltage to rise. I did check for voltage with module unpluged.

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  • Noah
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2 years 6 months ago #61102 by Noah
Replied by Noah on topic Hvac 5v referance
Some more context would make it easier to answer your question.
Year, make, model, codes, manual/auto HVAC, description of the issue you are trying to solve...
"Ground cannot be checked with a 10mm socket"

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2 years 6 months ago #61105 by George Uk
Replied by George Uk on topic Hvac 5v referance

Have a short 5v ref. the module wants to see less then 4.9v checked at module has 5.04v.


Really !!! That is a new one on me !!

What is the source telling you that 4.9 v is the max it will accept ?

I could be wrong but I would assume 5.04v as perfectly acceptable in this instance.

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2 years 6 months ago #61108 by antjmiller613
Replied by antjmiller613 on topic Hvac 5v referance
yes i would also think it was acceptable.. that spec came from the ford manual

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