What was found
LEFT FWD. WINDOW "OVERHEAT" IS ILLUIMINATED. GROUNDED - YES. BITE CHECKED WHCU M321 REF B737-800 FIM 30-41 TASK 801. FAULTS WINDOW SENSOR & P5-9. PLACED L1 SENSOR SWITCH TO SPARE POSITION ON E4 STANCHION. SENSOR FAULT CLEARS. P5-9 FAULT REMAINS. RMVD & RPLCD C/B C228 AND TERMINAL END OF W0044-0491-12 REF WD 30-41-11 PG 6 SH 1. BITE CHECK OF L1 WHCU NOW GOOD. WINDOW HEAT SYS OPS NML REF MM 30-41-00. ETOPS GND VERIFICATION TEST SUCCESSFUL. SEAMC JEFF NOTIFIED.