What was found
ON MASTER RECALL CONT CAB ZONE TEMP COMES ON AND CLEARS WITH MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISH GROUND VERIFICATION, PERFORMED BITE ON BOTH ZONE TEMP CONTROLLERS 1 & 2, FAULTED, FLT DECK CABIN SENSOR, ON BOTH, CLEARED FAULT ON BOTH CONTROLLERS, ZONE TEMP DOES NOT ILLUMINATE ON RECALL, CLEANED CABIN FILTER AND SENSOR, REF FIM 21-62, TASK 801.