What was found
DURING PREFLIGHT FLOW - RH FORWARD WINDOW HEAT OVERHEAT LIGHT ON- CAUTION LIGHT. GROUNDED - YES. PERFORMED WINDOW HEAT FAULT ISOLATION PER B737-9 IFIM 30-41-00-810-829 AND OPERATIONAL TEST PER B737-9 AMM 30-41-00-710-801, OPS CHECK GOOD, NO FAULTS NOTED.