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 TAILLIGHT DOESN’T WORK—Continued 0035 00 2Y 1. Remove harness 12268797 circuit 21 plug (1) from harness 12349881 circuit 21 jack (2) on panel. 2. Measure voltage between harness 12349881 jack (2) and ground. 3. Does multimeter read less than 17 volts? YES NO 2YN 1. Repair harness 12268797 circuit 21 (WP 0382 00). 2. Verify no faults found. 3Y 1. Turn MASTER SWITCH OFF. 2. Remove instrument panel for access (WP 0295 00). 3. Remove harness 12349881 plug (1) from LIGHTING CONTROL switch jack (2) 4. Measure resistance between LIGHTING CONTROL switch jack (1), pin H (2), and circuit 21 jack (4). 5. Does multimeter read 0 ohms? YES NO 3YN 1. Install harness 1268797 circuit 21 plug on left taillight jack. 2. Faulty harness 12349881 circuit 21. Beyond unit maintenance repair. 3. Notify supervisor. 4Y 1. Install harness 1268797 circuit 21 plug on left taillight jack. 2. Replace main light switch (WP 0283 00). 3. Verify no faults found. 0035 00-2