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 TEST OPTIONS REASON FOR QUESTION KNOWN INFO Voltage Test or STE/ICE-R Test #89 POSSIBLE PROBLEMS WARNING Read WARNING on following page. 4. 2-790 Change 1 Faulty dashboard cable assembly. Faulty relay K28. Is 12 VDC present at relay K28 terminal 86 on PDP? If 12 VDC is not present, wire 1955 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. e65. TRAILER MARKER/TAILLIGHTS DO NOT ILLUMINATE (CONT) NO YES Repair wire 1955 from relay K28 terminal 86 on PDP to terminal board TB1 position 5 (para 2-45) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). KNOWN INFO TEST OPTIONS Continuity Test or STE/ICE-R Test #91 REASON FOR QUESTION POSSIBLE PROBLEMS 5. Faulty dashboard cable assembly. Faulty relay K28. Is continuity present from relay K28 terminal 85 on PDP to ground? If continuity is not present, wire 3056 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. Replace relay K28 (para 7-9). NO YES Repair wire 3056 from K28 terminal 85 on PDP to terminal board TB2 position 22 (para 2-45) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly ( para 7-11).