What was found
REJECTED T/O, RT MAIN GEAR UNSAFE LIGHT ON FWD PANEL ILLUMINATED & GREEN SAFE LIGHT WENT OUT. INDICATIONS NORMAL BEFORE LEAVING RUNWAY. USING SYSTEM 2 WEIGHT 343700, OAT 21C, PA 706, BRAKE TEMP 270 C. SYSTEM 2 GEAR INDICATOR DEFERRED. MEL 32-31-01-2. DMI CONTROL 16651. REMOVED AND REPLACED PROXIMITY DETECTION MODULE 54GB PER M/M 32-61-12. SYSTEM OPS CHECKED GOOD. THIS CLEARS DMI 16651 - PLACARD REMOVED. MX CONTROL NOTIFIED.