should be able to drive down on car top or controller insp. hoistway will not work since pulse count has not been re-established (you can enter count manually). do you have good dpp counts? 2.6 to 2.7 vac @ 30 fpm at controller? dpp sensors need to be the thickness of a nickel from back of tape. adjust magnet on front side to have dpp count toggle, 2.7 to 2.9 vac measured at landing system; this will give you 2.6 to 2.7 vac at controller. you will find that too close or too far will keep sensor solid on or off and not toggling.