What was found
AIRCRAFT REJECTED TAKEOFF DUE TO TAKEOFF WARNING ALARM WAS ACTIVATED. THE FAULT CODES 31-55-008 & 31-52-004 APPEARED DURING A BITE TO THE PROXIMITY SWITCH UNIT IAW FIM 32-9. THE SWITCH S132 WAS FOUND OUT OF ACTIVATION LIMITS. THE SWITCH WAS ADJUSTED AND THE TAKEOFF WARNING SYSTEM WAS TESTED IAW M/M 31-51-02, SUBTASK 31-51-02-820-00, ALL CORRECT. DURING OVERNIGHT CHECK AT MEX, A TAKEOFF WARNING ALARM TEST WAS PERFORMED IAW M/M 31-51-00 PAGES 510 TO 515, BEING CORRECT.