KNOWN INFO                         TEST OPTIONS            NO            TEST OPTIONS                        KNOWN INFO              NO YES YES WARNING Read WARNING on following page. Continuity Test or STE/ICE-R Test #91     REASON FOR QUESTION     Voltage Test or STE/ICE-R Test #89     REASON FOR QUESTION            POSSIBLE PROBLEMS        3. 2.        POSSIBLE PROBLEMS        Go to step 6 of this fault. CAUTION Read CAUTION on following page. Towing vehicle left stop/turn light OK. Circuit breaker CB43 OK. Trailer electrical system OK. 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. Faulty dashboard cable assembly. Faulty relay K30. Faulty rear lights cable assembly. Faulty rear intervehicular 24 VDC (12 pin) cable. Is 24 VDC present at relay K30 terminal 30 on PDP? Is continuity present from connector J130 socket B to relay K30 terminal 87? Repair wire 1922 from K30 terminal 30 on PDP to circuit breaker CB43 terminal 8 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). TM 9-2320-365-20-1 2-772          Change 1 This question eliminates possible problems and determines where troubleshooting continues. If 24 VDC is not present, wire 1922 is faulty. e64. TRAILER LEFT STOP/TURN LIGHT DOES NOT ILLUMINATE (CONT)