TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
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e62. TRAILER MARKER/TAILLIGHTS DO NOT ILLUMINATE (CONT) TM 9-2320-365-20-1 2-758 Change 1 CAUTION Read CAUTION on following page. 7. Is continuity present from connector P51 socket 9 to connector P53R pin 2? TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION If continuity is not present, wire 489T is faulty. If continuity is present, intervehicular 24 VDC (12 pin) cable is faulty. KNOWN INFO Towing vehicle marker/taillights OK. Circuit breaker CB41 OK. Trailer electrical system OK. Dashboard cable assembly OK. Relay K28 OK. POSSIBLE PROBLEMS Faulty rear lights cable assembly. Faulty rear intervehicular 24 VDC (12 pin) cable. NO Repair wire 489T from connector P51 socket 9 to connector P53R pin 2 (para 2-40) or replace rear lights cable assembly (para 7-75). YES Replace intervehicular 24 VDC cable (para 7-79).