What was found
CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL DURING AFTER START CHECK. ACCOMPLISHED QRH FOR ZONE TEMP, LIGHT REMAINED ILLUMINATED ON RECALL. GROUNDED-YES. PERFORMED BITE TEST ON BITE BOX NR 2. FOUND FLT DECK TRIM VALVE FAULT. FAULT CLEARED AFTER PERFORMING A SECOND SEQUENCE AND GREEN GO LIGHT ILLUMINATES. ACCOMPLISHED B737-900 FIM 21-62 TASK 842 NO FAULTS FOUND, OPERATIONS CHECK GOOD. OK FOR SERVICE.