What was found
CREW REPORTED LT OVERWING EXIT INDICATION INOP, PRESSURIZATION NORMAL, NO GREEN INDICATION ON DOOR ,PER QRH CREW RETURNED TO FIELD AT MKE AND LANDED WITHOUT INCIDENT. MAINTENANCE WAS DISPATCHED TO THE AIRCRAFT TO TROUBLESHOOT. MAINTENANCE REMOVED AND INSPECTED THE LT & RT OVERWING EXIT DOORS PER AMM 52-21-00-04, NO DEFECTS FOUND. A/C WAS THEN RELEASED BACK INTO SERVICE.