What was found
OMDB - ON TAXI TO RUNWAY, AIRCRAFT EXPERIENCED A FAILIURE OF THE NR 7 BRAKE TEMPERATURE SENSOR. THE CAPTAIN ELECTED TO RETURN TO THE GATE FOR MAINTENANCE REVIEW OF THE MALFUNCTION. MAINTENANCE REPS INSPECTED THE NR 7 BRAKE TEMP INDICATOR CANNON PLUGS, SECURED WIRING AND INSTALLED DUST CAPS ON PLUGS. SENSOR STILL INOP. SENSOR DISCONNECTED AND DMI'D PER MEL 32-46-1 M320C08-12. TWO FLIGHTS LATER, IN KUL, BRAKE TEMP SENSOR REMOVED AND REPLACED (PN 2609913, SN OFF D6900, SN ON D7816). REACTIVATED THE NR 7 BRAKE TEMPERATURE SENSORS PER MEL. OPS CHECK NORMAL. DMI CLEARED. AIRCRAFT RETURNED TO SERVICE. (X)