Quote:
Originally Posted by Tech II
You can back probe the signal wire while it is plugged in to read the signal with the key on.......Just because it was charged last year, does not mean it is charged this year.....these compressors are famous for leaking at the front seal, and also at the service valves....
One more thing.....the place you should really back probe the signal line, is at the ECM....this will tell you the integrity of the line, and if the ECM is receiving the signal....
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I will try that this weekend and report back. Should I be looking at 1 volt? Is the 70 degrees ambient temp the outside temp? If it is we won't be there for another month or so.