Focus Fanatics - View Single Post - Alternator problem, please help
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Old 02-09-2013, 10:57 AM   #12
Capt. Obvious!
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Join Date: Jan 2013
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Quote:
Originally Posted by Mile30 View Post
You need to find a pin-out chart for the signal wire from the PCM. You should also try to find the values for the correct voltage you should see under normal operations to further confirm it's the PCM before you spend all that money!
I have the pin-out, (pin 72 and 59) I don't know for sure what the voltage should be. I read somewhere it should be battery voltage on the red wire, 9v on one of the others (blue iirc) and zero on the last one (which I have). But I cant find where I read it again.

Besides that, I believe it needs more than just voltage, it requires a specific signal from what I've read. I could be wrong though.
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