What was found
EAI VLV RT ENGINE, EAI VLV FAILURE. STATUS MSG-3010112 LATCHED DC MODE. CLN CTRL M30211, NO HELP. ANTI-ICE VLV WILL NOT OPEN. VERIFIED VLV OPEN ON ENG RUN. REPLACED EAI CONTROLLER & EAI VLV ASSEMBLY IAW MM 30-21-03& MM 30-21-02, NO HELP. DEACTIVATED VLV OPEN. REPLACED ANTI-ICE VALVE AGAIN IAW AMM 30-21-02, NO HELP. WHILE RUNNING ENG VLV WILL NOT OPEN. MAT TEST IS FAILING VLV IN CLOSED POSITION. PERFORMED TSM 30-20-801-8 02, RANG WIRES TESTED OK. FOUND ENG ANTI-ICE PRESSURE SW'S M30212 & M30214 BOTH BAD. REPLACED BOTH SENSORS & TESTED IAW MM 30-21-04, ANTI-ICE SYSTEM CHECKED NORMAL.