What was found
(CAN) ACFT ON APPROACH WHEN THE CREW REPORTED A WING ANTI-ICE SYS FAILURE AND COULD NOT CONTINUE THE APPROACH DUE TO WEATHER. THEY REQUESTED TO BE TAKEN OUT OF THE APPROACH SEQUENCE INTO A CLEAR SPACE AND TO BE DIVERTED TO ANOTHER AIRPORT. THEY DECLARED AN EMERGENCY REPORTING A WING OVERHEAT RT SIDE. THE ACFT LANDED SAFELY. THE AIRLINE REPORTED AN INDICATION LIGHT ILLUMINATED IN THE COCKPIT, IT WAS UNCLEAR WHETHER THERE WAS AN ACTUAL PROBLEM. TEMPERATURE SENSOR, PN: GG670-80013-7.