What was found
YAW DAMPER UPPER STATUS MSG. UPPER YAW DAMPER INOP, MAYBE DUE TO MODULE FAULT, ACTUATOR FAULT, IRU'S OFF OR IN ALIGN, ENGAGE SW OFF, OR MODULE POWER OFF. CHRONIC ITEM NO TIME. PERFORMED GND TEST PER MEL. INBOUND FAULT 22601. NEED TO ACCOMPLISH FIM 22-21 TASK 803. WILL REQUIRE UPPER YDM M7362 REPLACED. PREV HIST FOR EXCITATION FAULT HAS NOT RETURNED, THE ONLY Y-D FAULT MSG SENT IS 22601. REF PREVIOUS LEG FAULT FOR MAINT MSG 22601, FOR FIM TASK 22-21-803, REPLACED M7362 PER MM. ACCOMPLISHED YAW DAMPER GRND TEST AND YAW DAMPER ACTUATOR GRND TEST. BOTH TESTS GOOD.