TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
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e40. ONE OR BOTH HEADLIGHTS (HIGH AND LOW BEAM) DO NOT ILLUMINATE Repair wire 3051 from connector P13 to terminal lug TL81 (para 2-40) or replace front lights cable assembly (para 7-74). 2. TEST OPTIONS Operational Test REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS START 1. Does one headlight illuminate? TEST OPTIONS Operational Test REASON FOR QUESTION This test eliminates possible problems and determines where troubleshooting continues. KNOWN INFO Nothing. POSSIBLE PROBLEMS Faulty front lights cable assembly. Faulty main light switch. Faulty dashboard cable assembly. Faulty relay K8. Faulty relay K7. NO Go to step 3 of this fault. YES Does left headlight illuminate? One headlight illuminates. Main light switch OK. Dashboard cable assembly OK. Relay K8 OK. Relay K7 OK. Faulty front lights cable assembly. If left headlight does not illuminate, wire 3052 is faulty. If right headlight does not illuminate, wire 3051 is faulty. NO YES Repair wire 3052 from connector P19 to terminal lug TL123 (para 2-40) or replace front lights cable assembly (para 7-74). Personnel Required (2) References TM 9-4910-571-12&P INITIAL SETUP Equipment Condition Engine shut down (TM 9-2320-365-10). Tools and Special Tools Tool Kit, Genl Mech (Item 44, Appendix C) STE/ICE-R (Item 39, Appendix C) Multimeter, Digital (Item 22, Appendix C) TM 9-2320-365-20-1 2-512 Change 1