As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND APU SHUTDOWN MODULE FAIL WHEN PULL THE FIRE CONTROL HANDLE ON THE APU SHUTDOWN MODULE AND PUSH AND HOLD APU DISCHARGE BUTTON NO VOLTAGE VALVE OF V1. (REPLACE) 1. I.A.W AMM 26-15-04-000-801 AND 26-15-04-400-801 REV.48. REPLACED APU FIRE SHUTDOWN MODULE, AND CONDITION CHECK NORMAL. 2.