TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
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TEST OPTIONS REASON FOR QUESTION KNOWN INFO Voltage Test or STE/ICE-R Test #89 POSSIBLE PROBLEMS WARNING Read WARNING on following page. 4. Towing vehicle left stop/turn light OK. Circuit breaker CB43 OK. Trailer electrical system OK. Rear lights cable assembly OK. Rear intervehicular 24 VDC (12 pin) cable OK. Faulty dashboard cable assembly. Faulty relay K30. Is 12 VDC present at relay K30 terminal 86 on PDP? e64. TRAILER LEFT STOP/TURN LIGHT DOES NOT ILLUMINATE (CONT) TM 9-2320-365-20-1 2-774 Change 1 If 12 VDC is not present, wire 461B is faulty. KNOWN INFO TEST OPTIONS Continuity Test or STE/ICE-R Test #91 POSSIBLE PROBLEMS 5. Towing vehicle left stop/turn light OK. Circuit breaker CB43 OK. Trailer electrical system OK. Rear lights cable assembly OK. Rear intervehicular 24 VDC (12 pin) cable OK. Is continuity present from relay K30 terminal 85 on PDP to ground? Faulty dashboard cable assembly. Faulty relay K30. REASON FOR QUESTION If continuity is not present, wire 3047 is faulty. YES Replace relay K30 (para 7-9). NO Repair wire 3047 from K30 terminal 85 on PDP to terminal board TB2 position 50 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly ( para 7-11). NO Repair wire 461B from relay K30 terminal 86 on PDP to connector J19 socket 2 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). YES