Wipers Do Not Operate When Washer Motor Is Engaged (Pulse Wipe) Or Wipers Do Operate In Intermittent Position.
WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Check for a good ground at the motor and at wiper switch. If OK, replace wiper switch. If not OK, repair wiring as necessary.