TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).d. ENGINE, ELECTRICAL SYSTEM (continued).(4) ONE OR MORE GLOW PLUGS FAIL TOOPERATE.Initial Setup:Tools/Test Equipment:Equipment Conditions:• Digital multimeter (DMM) (Item 13, Appendix 1)l MASTER switch set to OFF (refer to• General mechanic’s tool kit (Item 24,(TM 9-2350-287-10).Appendix 1)l Open engine intake grille (refer to(TM 9-2350-287-10).Personnel Required: TwoNOTEl Instead of using multimeter for voltagecheck, STE/iCE troubleshooting,INDIVIDUAL BATTERY TEST-TEST89 maybe performed.l Instead of using multi meterfor continuity check, STE/lCEtroubleshooting, TEST 91 maybe performed.A. 1. Disconnect wire harness 12268389 fromsuspect glow plugs.2. Place positive end of circuit tester to posi-tive batterty terminal.3. Touch probe end of 24V circuit tester tosuspect glow plug.Does circuit tester light up when 24V circuit tester isapplied?Replace glow plugs (para 4-27).Verify problem is solvedINOTEGlow plug system will only operatewhen temperature is 50°or less.It can be tricked into operating byplacing an ice bag on the controller.Continued on next page2-72
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