What was found
FLIGHT 2126. ILS MISSED APPRAOCH DUE TO CAPTAINS SIDE LOC NO CAPTURING. SOURCED FO SIDE FO FLOWN NORMAL. ON LANDING MASTER CAUTION FD LATERAL MODE OFF. REMOVED FROM SERVICE. INTERROGATED CMC, FOUND FAULT CODE 22110045FB1/2 AND 22110045FA1/2. PERFORMED FIM TASK 22-11-00-811-859. PERFORMED LOC FUNCTIONAL TEST IAW E175 AMM 34-32-00-720-801-A SUBTASK 34-32-00-720-003-A. TEST PASSED. FOUND TO BE TRANSITORY. MTX CONTROL NOTIFIED. PLACARD READS CAT III. A/C REMAINS CAT III QUALIFIED. NFDN. RETURNED TO SERVICE.