As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU INDICATES ZERO FREQS & 1 VOLT AT CRUISE (POST CP). PER FIM 49 30 00 810 805 C/W FCU RESOLVER CIRCUIT FAULT ISOLATION: CONNECTOR P22 PINS 10 TO 12 CONTINUITY READS OPEN (SHOULD READ 30 200 OHMS) FUEL CONTROL UNIT REPLACEMENT REQ'D. REMOVED AND REPLACED APU FUEL CONTROL UNIT REF M/M 49 31 11, OPS AND LEAK CHECKS GOOD.