One problem related to power assist brake has been reported for the 1997 Plymouth Voyager. The most recently reported issues are listed below.
In icy conditions with temperatures approximately 10 degrees f, brakes did not activate without excessive pedal pressure apparently due to failure of power assist. This happened twice within 24 hours during a trip to flint, mi. Upon returning to virginia, the vehicle was taken to greenbrier Chrysler-Plymouth, who inspected and advised that they were unable to duplicate the failure.