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 e68. TRAILER BLACKOUT MARKER LIGHTS DO NOT ILLUMINATE 2-816 Change 1 INITIAL SETUP Equipment Condition 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) Material/Parts Wire, Elect, 50 ft (Item 71, Appendix D) Personnel Required (2) References TM 9-4910-571-12&P NOTE Perform Electrical System Troubleshooting e1. Circuit Breaker Does Not Operate on circuit breaker CB42 prior to beginning this task. START WARNING CAUTION Read WARNING and CAUTION on following page. Is 24 VDC present at connector J130 sockets A, C, and H? KNOWN INFO Faulty trailer electrical system. Faulty dashboard cable assembly. Faulty relay K29. Faulty rear lights cable assembly. Faulty rear intervehicular 24 VDC (12 pin) cable. Towing vehicle blackout marker lights OK. Circuit breaker CB42 OK. TEST OPTIONS Voltage Test or STE/ICE-R Test #89 If 24 VDC is present, trailer electrical system is faulty. NO Go to step 2 of this fault. YES Troubleshoot trailer electrical system per trailer technical manual. 1. POSSIBLE PROBLEMS REASON FOR QUESTION