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 2-788 Change 1 e65. TRAILER MARKER/TAILLIGHTS DO NOT ILLUMINATE (CONT) KNOWN INFO TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION POSSIBLE PROBLEMS 2. CAUTION Read CAUTION on following page. Faulty dashboard cable assembly. Faulty relay K28. Faulty rear lights cable assembly. Faulty rear intervehicular 24 VDC (12 pin) cable. Is continuity present from connector J130 socket E to relay K28 terminal 87? Towing vehicle marker/taillights OK. Circuit breaker CB41 OK. Trailer electrical system OK. NO YES Go to step 6 of this fault. TEST OPTIONS KNOWN INFO NO WARNING Read WARNING on following page. Voltage Test or STE/ICE-R Test #89 REASON FOR QUESTION 3. POSSIBLE PROBLEMS Faulty dashboard cable assembly. Faulty relay K28. Is 24 VDC present at relay K28 terminal 30 on PDP? If 24 VDC is not present, wire 1957 is faulty. Towing vehicle marker/taillights OK. Circuit breaker CB41 OK. Trailer electrical system OK. Rear lights cable assembly OK. Rear intervehicular 24 VDC (12 pin) cable OK. NO YES Repair wire 1957 from K28 terminal 30 on PDP to circuit breaker CB41 terminal 2 (para 2-45) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). This question eliminates possible problems and determines where troubleshooting continues.