TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 BLACKOUT MARKER LIGHT(S) AND/OR TAILLIGHT(S) DO NOT OPERATE—Continued 0040 00 BY 1. Check and see if both BO taillights or both BO markers are out. 2. Are both BO taillights out or both BO markers out? YES NO GO TO CY (PAGE 0040 00-3) 2BY 1. Check and see if both BO taillights are out. 2. Are both BO taillights out? YES NO 2BYN 1. Repair main harness circuit 20 (WP 0294 00). 2. Verify no faults found. 3BY 1. Repair main harness circuit 24 (WP 0294 00). 2. Verify no faults found. CY 1. Turn MASTER SWITCH OFF. 2. Remove main harness plug (1) from light switch jack (2). 3. Measure resistance between switch jack (2) pins F (3) and E (4). 4. Does multimeter read 0 ohms? YES NO CYN 1. Replace light switch (WP 0262 00). 2. Verify no faults found. 0040 00-3/4 blank 2CY 1. Repair main harness circuit 20/24 (WP 0294 00). 2. Verify no faults found.