What causes the automatic doorlock to sound like a 3 round burst of a M-16 rifle on 2008 Chrysler Town & Country

The power lock on the front passenger door engages 3 times when it is told to lock by the remote, door lock button and when reaching 15 mph and it does not always lock. you have to hit it twice sometimes. i guess it is getting a lock-unlock-lock or an unlock-lock-unlock signal??anyone have any ideas?

by in Macclesfield, NC on August 19, 2012
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2 answers
ANSWER by , August 19, 2012
scan codes for bcm module and see if there are any codes
ANSWER by , August 23, 2012
Switch or actustor.