Question about 2002 Ford Explorer
Posted by Anonymous on
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Sep 12, 2017 | BMW Cars & Trucks
Jan 22, 2014 | 2004 Mazda 3
Sep 20, 2012 | 2000 Toyota Celica
are actually VERY
MOST vehicles. (Although you would not guess that by the
number of PCM's that are sold and replaced every year). Too many people jump to
conclusions and blame anything they cannot explain on "Bad PCM". Just
read ANY online auto repair
blog and you will find THOUSANDS
of posts where the poster has already replaced the PCM, but the problem still
PCM replacement should only occur after ALL OTHER POSSIBILITIES have been THOROUGHLY checked with the correct equipment and the proper methods of testing.
OK, that's my "preaching" for the day......
I think it prudent to inform you that your DASH ILLUMINATION and PARK/MARKER lamps are not controlled by the PCM on your vehicle. So, I believe that would eliminate that possibility all-together. (Deep breath....sigh of relief ---- ; )
Those circuits DO go through the Passenger Junction Box (PJB) though.
Mazda has published a Technical Service Bulletin (TSB) for your car which addresses MANY intermittent electrical failures as a result of faulty/loose electrical connections at the PJB. I think that would be the first place I would look for the solution.
TSB REFERENCE NUMBER: 09-025/05
May 15, 2012 | 2004 Mazda 3
Nov 15, 2009 | 2002 Ford Explorer
Oct 20, 2009 | 2003 Mazda Mazda6
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