What was found
NR 2 WINDOW OVERHEAT LIGHT ILLUMINATED DURING APPROACH. ACFT GROUNDED. TROUBLESHOT IAW FIM 30-41, TASK 811. CURRENTLY FAULT LIGHT WAS NOT ON. PERFORMED A WINDOW HEAT CONTROL UNIT BITE IAW FIM 30-41 TASK 801, TEST PASSED. PREVIOUS LEG FAULTED WINDOW SENSOR. PERFORMED A CHECK OF THE WINDOW SENSORS AND FOUND VALUES TO BE WITHIN LIMITS. DISCOVERED WINDOW WAS ALREADY USING SPARE SENSOR. REMOVED AND REPLACED THE FIRST OFFICER`S WINDOW ASSY IAW AMM 56-12-11. LEAK TESTED AND OPS CHECKED GOOD.