TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
Page 1156 of 1760
e63. TRAILER RIGHT STOP/TURN LIGHT DOES NOT ILLUMINATE TM 9-2320-365-20-1 2-760 Change 1 Perform Electrical System Troubleshooting e1. Circuit Breaker Does Not Operate on circuit breaker CB44 prior to beginning this task. NOTE 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) Material/Parts Wire, Elect, 50 ft (Item 77, Appendix D) Personnel Required (2) References TM 9-4910-571-12&P START WARNING CAUTION Read WARNING and CAUTION on following page. 1. Is 24 VDC present at connector J130 socket J? TEST OPTIONS Voltage Test or STE/ICE-R Test #89 REASON FOR QUESTION If 24 VDC is present, trailer electrical system is faulty. KNOWN INFO Towing vehicle right stop/turn light OK. Circuit breaker CB44 OK. POSSIBLE PROBLEMS Faulty trailer electrical system. Faulty dashboard cable assembly. Faulty relay K31. Faulty rear lights cable assembly. Faulty rear intervehicular 24 VDC (12 pin) cable. Troubleshoot trailer electrical system per trailer technical manual. NO Go to step 2 of this fault. YES