TM 9--2350--292--20--10012 00--1AUXIILIARY POWER UNIT FUEL SOLENOID FAILS TO ENERGIZE.0012 00THIS WORK PACKAGE COVERS:Auxiliary Power Unit Fuel Solenoid Fails To EnergizeINITIAL SETUP:Tools and Special ToolsGeneral mechanic’s tool kit (item 1, WP 0717 00)Multimeter (item 84, WP 0717 00)Equipment ConditionsVehicle MASTER switch OFF (TM 9--2350--292--10)APU cover removed (WP 0413 00)Personnel RequiredTwoIs 24 V dc present?1. Remove APU preheater relay/fuel solenoidaccess cover (WP 0624 00).2. Turn MASTER switch ON(TM 9--2350--292--10).3. Place multimeter red lead on lead 421 atsolenoid and multimeter black lead to ground.Check for voltage.4. Turn MASTER switch OFF(TM 9--2350--292--10).noyesNotify Direct SupportMaintenance.AWARNINGRemove rings, bracelets, wristwatches,and neck chains before working on anyvehicle. Jewelry can catch on equip-ment and cause injury, or may shortacross an electrical circuit and causesevere burns or electrical shock.CONTINUED ON NEXT PAGEIs 24 V dc present?1. Disconnect harness 4W700 P1 from APUcontrol box.2. Turn MASTER switch ON(TM 9--2350--292--10).3. Place multimeter red lead in harness 4W700P1 socket N and black lead to ground. Checkfor voltage.4. Turn MASTER switch OFF(TM 9--2350--292--10).noyesBRepair (WP 0290 00) or replace(WP 0332 00) harness 4W700.Verify fault is corrected.
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