TM 9--2350--292--20--1M3 HEATER (1, 2, OR 3) FAILS TO OPERATE. AIR PURIFIERS OPERATEPROPERLY0080 00THIS WORK PACKAGE COVERS:M3 Heater (1, 2, Or 3) Fails To Operate. Air Purifiers Operate ProperlyINITIAL 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)Personnel RequiredTwoWARNINGRemove 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.noyesRepair (WP 0290 00) or replaceharness 4W306 (heater 1 or 2)(WP 0710 00) or 4W307 (heater3) (WP 0711 00). Verify fault iscorrected.A1. Disconnect harness 4W306 P3 (heater 1),4W306 P4 (heater 2) or 4W307 P3 (heater 3)from faulty M3 heater.2. Turn MASTER switch ON(TM 9--2350--292--10).3. Place red multimeter lead on harness 4W306P3 (heater 1), 4W306 P4 (heater 2) or 4W307P3 (heater 3) connector pin and black lead toground. Check for voltage.4. Turn MASTER switch OFF(TM 9--2350--292--10).Is 24 V dc present?noyesClean and/or repair (WP0290 00) ground lead asnecessary. If fault is notcorrected, replace M3heater (WP 0708 00).Verify fault is corrected.B1. Make sure ground lead is securely fastened tomounting bracket.2. Place one multimeter lead on heater groundlead and other lead to vehicle ground. Checkfor continuity.Is continuity present?Replace M3 heater (WP0708 00). Verify fault iscorrected.FORWARDEND OF TASK0080 00--1/2 blank
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