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Originally Posted by weasel56
Correct. There is no way to interpret what signals are being sent, just that something is indeed being sent. (digital signal = binary code to the control modules) But in the diagnostic requests you can usually see what is being done.
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Yes, in training materials I've seen what oscilloscope can be used for. Mostly for troubleshooting BUS line condition, shorts, etc.
I think I need to get that GT1 thingy and get out of the dark. Right now CarSoft does good for me showing codes but I think I'm ready for more data. Oscilloscope function is what it is, oscilloscope. If needed I can get real oscilloscope and use it.