OBD-1: testing the test port?
11-27-2011, 08:43 AM
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OBD-1: testing the test port?
I've tried searching, but don't exactly know how to word the search to get the result I'm looking for...is there a way to test the diagnostic port itself on my '89 runner? I have never seen the CEL come on, not at startup, not when I jump the test connections. It may just be a bad bulb, but I wondered if I might test the port itself with a multimeter somehow before I pull the dashboard apart...
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_Nicco_
86-95 Trucks & 4Runners
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09-21-2015 03:06 PM
