What was found
CONT CABIN ZONE TEMP CONTROLLER ILLUMINATES WITH MASTER CAUTION RECALL. LIGHTS EXTINGUISH WITH MASTER CAUTION RESET. GROUNDED - YES. CONFIRMED THAT CONT CABIN ZONE TEMP LIGHT ILLUMINATES W/ MASTER CAUTION RECALL. ACCOMPLISHED PACK TEMP CONTROLLER BITE REF B737-800 FIM 21-62 TASK 801. (R) PACK/ZN CONTROLLER FAULTED FLT DECK TRIM VALVE. REPLACED (CONT CAB) ZONE TRIM AIR MODULATING VALVE REF B737-800 AMM 21-61-21-000/400-801. LEAK CHECK GOOD. ALL TESTS PASSED. ZONE TEMP LIGHT NO LONGER ILLUMINATES W/ MASTER CAUTION RECALL. PACK TEMP CONTROLLER BITE PASSED REF FIM 21-62 TASK 801.