What was found
AFTER ENGINE START DURING RECALL "AIR COND" LIGHT ILLUMINATES ALONG WITH "ALL" 3 ZONE TEMP LIGHTS. NO TEMP CONTROL. "AIR COND" LIGHT EXTINGUISHES WITH MASTER CAUTION RESET. ACFT GROUNDED. FLT DECK AND ZONE SELECTOR FAULTS ON BOTH ZONE TEMP CONTROLLERS. REPLACED TEMPERATURE CONTROL MODULE AND CLEARED FAULTS ON ZONE TEMP CONTROLLERS, BITE TESTS NORMAL IAW MM 21-61-00. TEMP CONTROL MODULE OPS TEST NORMAL IAW MM 21-61-15. GROUND VERIFICATION SUCCESSFUL.