What was found
APU FAILS TO START.(<P>TRANSFERRED TO MDDR 125888 PER B767 DDG 49-11-01A, CAT 'C', DUE 27MAR20. PROCEDURES C/W. PLACARDS INSTALLED.</P><P>LOGPAGE 1231997: TROUBLESHOT RELAY K197 PER B767 FIM 49-11 TREE 959, FOUND HIGH RESISTANCE BETWEEN X1 AND X2 PINS. REPLACED RELAY IAW SWPM 20-81-22. NO HELP. REMOVED AND REPLACED APU ECU IAW AMM 49-61-05. APU ECU P/N OFF 2117342-20, S/N OFF 727711. OPS CHECK GOOD.THIS CLEARS DMI 125888.</P><P>LOG PAGE 123997 ITEM M6. REMOVED AND REPLACED APU IAW B767 AMM 49-11-01 AND W/O A49.999-00-01. OPS CHECK GOOD . </P>)