What was found
APU INOP, NO ROTATION WITH FAULT LIGHT ON. GROUNDED - YES. APU BITE SHOWS NUMEROUS "NO FLAME SHUTDOWN" MSG 49-41011 AND "FCU RESOLVER CIRCUIT SHOWS BAD" MSG 49-31175. CONFIRMED FAULT, APU NO ROTATION INOP FOLLOWED BY FAULT LIGHT. ACCOMPLISHED FIM 49-32 TASK 805 FAULT ISOLATION, FOUND P22 AT FUEL CONTROL UNIT LOOSE. SECURED P22 ELECTRICAL CONNECTOR, APU GROUND FUNCTIONAL CK NML REF AMM 49-61-00.