What was found
PDIS: WHEN SELECTED WING ANTI-ICE ON DEPARTURE FROM LFPGR`CVD DISAG-ALERT. RAN QRH PROCEDURES WHICH FAILED TO OPEN OR CLOSE RT WING ANTI-ICE VALVE STUCK IN TRANSIT. DIVERTED TO LIMC. DUMPED APPROX 125.000 LBS FUEL. ON SYNOPTIC AIR PAGE CONFIRMED AMBER RT WING A/I VALVE. READ ESC, PSC1 AND PSC 2 FAULT PRESENT, FROM ESC RESET RT A/I VALVE. FOUND PSC-2 RATS TEST FAIL. T/S IN PROGRESS. REMOVED AND REPLACED RT WING A/I VALVE IAW AM. ALSO, TESTED VALVE OPS ON SYNOPTIC PAGE. PERFORMED SWAP OF PSC CONTROLLERS 1 AND 2, RATS OF BOTH COMPUTERS FOUND SATES. ACFT IS OK FOR SERVICE.