What was found
AFTER ENG START AND DURING THE AFTER START CHECK LIST RIGHT PACK LIGHT ILLUMINATED WHEN MASTER CAUTION RECALL PUSHED. THE LIGHT WENT OUT WITH THE MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED BITE CHECK OF R PACK ZONE TEMP CONTROLLER IAW B737-900 FIM 21-62 TASK 801. PREVIOUS LEGS FAULTED R PACK TCV. ACCOMPLISHED FIM 21-62 TASK 831. GREEN LIGHT ILLUMINATES DURING VERIFY. PACK LIGHT DOES NOT ILLUMINATE DURING MASTER CAUTION RECALL.