TM 9--2350--292--20--10009 00--9AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED0009 00CONTINUED FROM STEP EDoes relay click?1. Hold PREHEAT switch ON and turn STARTswitch ON and OFF several times(TM 9--2350--292--10). Listen for starter relayto click.2. Turn MASTER switch OFF(TM 9--2350--292--10).UnoyesGo to step AB.Is continuity present?1. Disconnect lead 65 from preheater relay andharness 3W711 P1 from APU enginedisconnect.2. Place one multimeter lead on preheater lead65 connector and other lead on harness3W711 P1 pin C. Check for continuity.noyesVIs continuity present?1. Reconnect lead 65 to preheater relayconnector.2. Disconnect harness 3W702 P1 at bulkheaddisconnect.3. Place one multimeter lead in harness 3W702P1 socket J and other lead in harness 3W702J1 socket C. Check for continuity.WRepair (WP 0290 00) or replace(WP 0648 00) harness 3W711.Verify fault is corrected.noyesRepair (WP 0290 00) or replace(WP 0311 00) harness 3W702.Verify fault is corrected.CONTINUED ON NEXT PAGE
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