TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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TM 9-2320-366-20-1 2-540 e42. ONE OR BOTH HEADLIGHT LOW BEAMS DO NOT ILLUMINATE INITIAL SETUP Equipment Condition Engine shut down (TM 9-2320-366-10-1). Personnel Required (2) Tools and Special Tools Tool Kit, Genl Mech (Item 46, Appendix C) STE/ICE-R (Item 41, Appendix C) Multimeter, Digital (Item 22, Appendix C) References TM 9-4910-571-12&P START 1. Does one headlight low beam illuminate? Go to step 3 of this fault. KNOWN INFO Headlight high beams illuminate. POSSIBLE PROBLEMS Faulty headlight lamp. Faulty front lights cable assembly. Faulty dashboard cable assembly. Faulty relay K8. Faulty turn signal switch. TEST OPTIONS Operational Test REASON FOR QUESTION YES This question eliminates possible problems and determines where troubleshooting continues. KNOWN INFO Headlight high beams illuminate. One headlight low beam operational. Dashboard cable assembly OK. Relay K8 OK. Turn signal switch OK. POSSIBLE PROBLEMS Faulty headlight lamp. Faulty headlamp wire 18. 2. Is continuity present between headlight lamp wire 18 and headlight lamp wire 91? YES Replace headlight lamp (para 7-41). NO TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION If continuity is not present, headlight lamp is faulty. If continuity is present, wire 18 is faulty. Repair wire 18 (para 2-45) or replace front lights cable assembly (para 7-82). NO