TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 SERVICE AND/OR BLACKOUT STOP LIGHTS MALFUNCTION—Continued 0033 00 5Y 1. Replace main light switch (WP 0283 00). 2. Verify no faults found. BY 1. Remove harness 12268797 circuit 22 plug (1) from jack (2) on malfunctioning left tail light, or circuit 23 plug from jack on malfunctioning right tail light. 2. Turn main switch on lighting control to STOP or to BO. 3. Measure voltage between circuit 22 (left) plug (1) or circuit 23 (right) plug and ground with brake pedal depressed. 4. Does multimeter read less than 17 volts? YES NO BYN 1. Install harness 12268797 jack on tail light. 2. Replace service stop or BO stop light bulb (WP 0301 00) or (WP 0302 00). 3. Verify no faults found. B2Y 1. Remove harness 12268797 circuit 22 plug (left) (1) or circuit 23 plug (right) (2) from harness 12349881 circuit 22 jack (3) or circuit 23 jack (4). 2. Measure voltage between harness 12349881 circuit 22 jack (2) or circuit 23 jack (3) and ground. 3. Does multimeter read less than 17 volts? YES NO B2YN 1. Repair circuit 22 or 23 (WP 0382 00). 2. Verify no faults found. 0033 00-3