What was found
PACK LIGHT ILLUMINATED DURING MC RECALL - RESETS. GROUNDED - YES. VERIFIED L/H PACK LT ON RELAY. PERFORMED PACK TEMP CTRL BITE REF B737-800 FIM 21-62 TASK 801. L/H TEMP CONTROLLER SHOWS RAM AIR ACT FAULT FOR BIT AND PREV FLT. VERIFY TEST PASSED. REMOVED AND REPLACED RAM AIR DOOR ACTUATOR WITH NO HELP REF B737-800 AMM 21-51-21 BITE TEST LEFT ZONE TEMP CONTROL SHOWS RAM AIR CONTROL TEMP SENSOR FAIL. REMOVED AND REPLACED RAM AIR CONTROL TEMP SENSOR. ZONE CONTROL BITE TEST PASS AMM 21-51-50.