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Old 02-20-2013, 10:45 AM
Lous69 Lous69 is offline
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Dave,

When my GM PWM fan modules arrive I am going to play with them on the test bench to learn more about how they work and respond to various input signals.

Thanks to you, I know I need to provide them with a 128 Hz PWM signal which will be no problem.

I can measure the impedence of the module when it arrives but I don't know how to determine what voltage range of PWM signal it will be looking for

Do you happen to know what voltage the module is looking for in the input signal it receives from the E67 ECM?

Thank you so much for your knowledge. You are the Man!
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