As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - UPON PUSHBACK BEFORE ENG START APU AUTO SHUT DOWN. REMOVED & REPLACED APU BATTERY PER AMM24-31-04. OPS CHECK OK. PERFORMED APU ECU BITE CK. NO FAULTS NOTED. OK FOR SERVICE. FOUND NO APU ELECTRICAL. REPLACED APU GCU PER AMM24-22-02. NO FAULTS NOTED. PERFORMED FIM 24-20-00 FIG 101. OK FOR SERVICE.