What was found
DURING CRUISE AT FL 350 L SIDE WINDOW OVERHEAT CAUTION LIGHT ILLUMINATED FOLLOWED QRH LIGHT EXTINGUISHED AFTER 3 1/2 MIN PER QRH, SWITCHED ON AGAIN "ON" LIGHT CAME ON AFTER 6 MINS, LIGHT EXTINGUISHED, BUT OVERHEAT LIGHT DID NOT ILLUMINATE. ACFT GROUNDED. ACCOMPLISHED WHCU BITE CK ON L2 WINDOW SHOWS SENSOR FAULT. REF B737-900 AMM 30-41-11. ACCOMPLISHED CONTROL CABIN WINDOW TEMP SENSOR REPAIR. MOVED PRIMARY TEMP SENSOR TERMINAL TO SPARE TEMP SENSOR D TERMINAL AT THE LOWER FWD MOST TERM POSITION. REINSTALLED L-2 OPENABLE WINDOW. GROUND VERIFIED WINDOW HEAT OP'S CHECKS GOOD. RF 30-41-00-900-001 AND 56-12-11 ACCOMPLISHED WHCU BITE CK TEST PASSED NO DEFECTS NOTED REF 30-41-11.