TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
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e56. BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE TM 9-2320-366-20-1 (2-707 Blank)/2-708 Change 1 NOTE Perform Electrical System Troubleshooting e1. Circuit Breaker Does Not Operate on circuit breaker CB66 prior to beginning this task. START 1. Is continuity present between main light switch pins F and E? KNOWN INFO Circuit breaker CB66 OK. Turn signals illuminate. POSSIBLE PROBLEMS Faulty main light switch. Faulty dashboard cable assembly. TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION If continuity is not present, main light switch is faulty. If continuity is present, wire 1572 is faulty. NO YES Replace main light switch (para 7-17). Repair wire 1572 from connector PX15 socket E to terminal board TB1 position 56 (para 2-45) or replace WTEC II dashboard cable assembly (para 7-10) or replace WTEC III dashboard cable assembly (para 7-11). INITIAL SETUP Equipment Conditions Engine shut down (TM 9-2320-366-10-1). 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) Personnel Required (2) References TM 9-4910-571-12&P