WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
SPEED CONTROL SWITCH
(V71) S/C SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO V937/K914 S/C SWITCH RETURN
(V71) S/C SWITCH NO. 1 SIGNAL CIRCUIT SHORTED TO GROUND