What was found
AIRCRAFT WAS GROUNDED: AIRCRAFT DECLARED AN EMERGENCY AND DIVERTED TO DFW DUE TO A FUEL ACT TRANSFER FAULT. AUTO FAULT LIGHT ILLUMINATED. NO HELP WITH ACT SWITCH FORWARD. 5180 LBS ACT 1 TRAPPED NO MANUAL TRANSFER FUNCTIONALITY. THE AIRCRAFT LANDED SAFELY AT DFW WITHOUT FURTHER INCIDENT. MAINTENANCE ACCOMPLISHED FUEL TRANSFER FROM CENTER TANKS TO THE WINGS. A SATISFACTORY OPERATIONAL TEST OF THE ACT MANUAL/AUTO TRANSFER SYSTEM WAS ACCOMPLISHED PER AMM 28-28-00 WITH NO FAULTS NOTED.