What was found
ON RECALL, CONTROLLER CABIN ZONE TEMP LIGHT ILLUMINATED, EXTINGUISHED ON RECALL. ACFT GROUNDED. ACCOMPLISHED PACK/ ZONE TEMPERATURE CONTROLLER BITE TEST, CONTROLLER NR 1 SHOWS NO FAULTS, CONTROLLER NR 2 SHOWS TRIM VALVE FLIGHT DECK, V143, FAULT. DISCONNECTED CONNECTOR, INSPECTED. NO DEFECTS NOTED. CLEARED FAULT ON CONTROLLER NR 2. SUPPLIED PNEUMATIC POWER AND RAN BOTH PACKS FOR 75 MIN". RE-ACCOMPLISHED PACK/ ZONE CONTROLLER BITE TEST, TEST NOW PASSES REF MM 21-61-00-700-806-002, & 21-61-21-400-801.