TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).d. ENGINE, ELECTRICAL SYSTEM (continued).(5) ENGINE CRANKS, BUT WILL NOT START INCOLD WEATHER OR GLOW PLUG SYSTEMFAILS TO OPERATE. All other electrical systemsoperate.Initial Setup:Tools/Test Equipment:Equipment Conditions:• Digital multimeter (DMM) (Item 13, Appendix 1)• MASTER switch set to OFF (refer to TM•General mechanic’s tool kit (Item 24,9-2350-287-10).Appendix 1)• Open engine intake grille (refer toTM 9-2350-287-10).Personnel Required: TwoNOTE• Instead of using mutlimeter for voltagecheck, STE/lCE troubleshooting,INDIVIDAL BATTERY VOLTAGETEST-TEST 89 maybe performed.• Instead of using multi meterfor continuity check, STE/lCEtroubleshooting, TEST 91 maybe performed.• Glow plug controller is programmedn o t t o o p e r a t e a t a m b i e nttemperatures of below 50°F andhigher. The controller can be trickedinto thinking the ambient temperatureis 50°F if an ice bag is placed on thecontroller.A. 1. Disconnect harness 12268389 connectorfrom glow plug controller.2. Place multimeter red lead on pin A of glowplug controller and ground black lead.3. Have assistant turn MASTER switch ONand hold GLOW PLUG switch ON (refer to TM9-2350-287-1 O).4. Check for 24 ± 3 vdc.5. Repeat above steps for pins B through H.6. Turn MASTER switch OFF (refer to TM 9-2350-287-1 O).Is voltage indicated at all 8 pins?Continued on next page2-74
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