what does the code PO645 mean - the a/c clutch relay circuit is open or shorted?
1999 CHRYSLER SEBRING
158 MILES
SKSILVER
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what is the a/c clutch relay circuit? code PO645 on a 1999 chrysler sebring lxi
Oct 6, 2012 at 2:13 PM
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ASEMASTER6371
CAR REPAIR CONTRIBUTOR
52,796 POSTS
the computer is trying to complete the command to turn on the ac and it cannot as it does not see a signal to ground.
the circuit has to be checked as to why there is no signal to the pcm
Roy
Oct 6, 2012 at 4:35 PM
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SKSILVER
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thank you very much, the air and/or heat hasn't been coming out of the vents very well...and a year ago it was looked at by a mechanic who said it just needed cleaned out, but the problem restarted about 6 months later...thank you again.
Oct 6, 2012 at 8:49 PM
SKSILVER
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68 POSTS
Would that relay cause the air or heat to not come out the vents very well? Or maybe it just needs recleaned again?