As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT FWD CAB ZONE TEMP LIGHT ILLUMINATED, OUT WITH RESET. GROUNDED - YES. PERFORMED BITE TEST ON BOTH PACK TEMPERATURE CONTROLLER PER FIM 21-62 TASK 801 FOUND ZONE FAULT ON CONT NR 2, CLEARED ZONE SELECTOR FAULT ON NR 2 CONTROLLER.