TM 9--2350--292--20--10018 00--7AUXILIARY POWER UNIT FAILS TO CRANK -- CONTINUED0018 00OIs continuity present?CONTINUED FROM STEP NnoyesPIs continuity present?noyesQIs continuity present?CONTINUED ON NEXT PAGE1. Reconnect harness 3W711 P1 at APUengine disconnect.2. Disconnect harness 4W700 P1 at APUcontrol box.3. Disconnect harness 4W700 P2 frombulkhead disconnect.4. Place multimeter red lead to harness 4W700P2 pin B and black lead to harness 4W700P1 socket A.5. Check for continuity.Repair (WP 0290 00) orreplace (WP 0332 00)harness 4W700. Verifyfault is corrected.1. Place multimeter red lead to harness 4W700P1 socket C and black lead to ground.2. Check for continuity.Repair (WP 0290 00) or replace(WP 0332 00) ground lead fromcontrol box connector to ground.Verify fault is corrected.1. Remove control box rear panel (WP 0247 00).2. Turn PREHEAT switch to MOM ON(TM 9--2350--292--10).3. Place APU GEN switch to OFF.4. Place multimeter red lead to control boxharness 4W725 pin A and black lead to pin C.5. Check for continuity.noyesGo to step AA.
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
