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Old 11-29-2000, 01:38 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Yes the on/off ratio tester is the FAULT tester as well. If the volt meter moves there aren't any faults. If it stays at 10%, 20%, 30%, and so on then there is a fault. This is the ONLY fault system on federal version cars.
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