What was found
(CAN) ANTI-ICE DUCT WARNING MESSAGE, WHILE ON DOWNWIND TO LANDING. SHORTLY AFTER, THE MESSAGE CHANGED TO, ANTI-ICE DUCT CAUTION MESSAGE AND THE ANTI-ICE PAGE SHOWED WING HEAT OFF. THE CREW REPORTED THAT THE ACFT WAS FLYING IN MODERATE TO SEVERE ICING CONDITIONS. THE CREW FOLLOWED THE QRH, PERFORMING A SYS RESET. AN EMERGENCY WAS DECLARED AND THE ACFT LANDED UNEVENTFULLY. MAINTENANCE FOUND HIGH RESISTANCE THROUGH LOOPS A AND B OF THE LT WING, AND R & R CONNECTORS. LOOP RESISTANCE WAS RE-CHECKED AND FOUND SATISFACTORY.