What was found
BOTH PACK LIGHTS ILLUMINATE UPON MASTER CAUTION RECALL BOTH EXTINGUISH UPON RESET. GROUNDED - YES. FOR R/H PACK LIGHT FOUND EXIT SRADA LIGHT ON PZTC #2 BITE. FOR L/H PACK LIGHT, FOUND RAM AIR SENSOR LIGHT ON PZTC #1 BITE. PERFORMED VERIFIY TEST MULTIPLE TIMES NO FAULTS. TESTS GOOD IN VERIFIY NO FAULTS AFTER TEST/RESET. REF B737-900 AMM 21-51-00 ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL.