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 HEADLIGHTS DON’T WORK—Continued 0031 00 3Y 1. Turn MASTER SWITCH to OFF. 2. Remove instrument panel for access. See task: remove instrument panel mounts and ground lead (WP 0295 00). 3. Remove harness 12349881 plug (1) from lighting control switch jack (2). 4. Measure resistance between lighting control switch jack (2) pins F (3) and M (4). 5. Does multimeter read 0 ohms? YES NO 3YN 1. Install dimmer switch and harness 12349881 plug on dimmer switch jack. 2. Replace lighting control switch (WP 0283 00). 3. Verify no faults found. 4Y 1. Faulty harness 12349881 circuit 16. Beyond unit maintenance repair. 2. Notify supervisor. 0031 00-2