What was found
AFT TO IN ICING COND WITH CLIMB PWR AND WING AND CWL AICE ON REC LT WING AICE CAUT MSG, C/W QRH, 14TH STAGE ISO SELECTED AN AFTER 30 SECONDS MSG REMAINS, ON GRND WHEN SELECTING WING AICE TO STANDBY ITT DOES NOT CHANGE. AIRCRAFT REMOVED FROM SERVICE. INSPECTED/ CLEANED CONNECTOR ON MOD/SHUTOFF VLV IAW AMM 30-12-04, NO DEFECTS NOTED AND PERF OPS TEST OF WING ANTI-ICE CONTROL/ IND SYS IAW AMM 30-12-00, NORMAL & STANDBY WING A-ICE CONTROL DID NOT PASS, REF 371035-4 . FOUND LH 14TH SOV LEKAING AIR R&R LH 14TH SOV IAW AMM 36-12-01 OPS CK AND LK CK GOOD AT THIS TIME OPS CK OF WING AICE SYS GOOD AT THIS TIME IAW AMM 30-12-00.