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 SERVICE AND/OR BLACKOUT STOPLIGHTS MALFUNCTION—Continued 0038 00 BY 1. Remove main harness 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 switch lever on light switch to STOP LIGHT or to BO MARKER. 3. Measure voltage between circuit 22 (left) plug (1) or circuit 23 (right) plug and ground with both steering levers locked in parking brake position. 4. Does multimeter read less than 17 volts? YES NO BYN 1. Install main harness jack on taillight. 2. Replace service stoplight or BO stoplight bulb (WP 0278 00 or WP 0280 00). 3. Verify no faults found. 2BY 1. Partially remove instrument panel (WP 0256 00). 2. Remove main harness plug (1) from light switch (2). 3. Measure resistance between light switch plug (1) pin C (3) to circuit 22 jack (service stop) or pin N (4) to circuit 23 jack (BO stop). 4. Does multimeter read 0 ohms? YES NO 2BYN 1. Install main harness on taillight. 2. Repair main harness circuit 22 or 23 (WP 0294 00). 3. Verify no faults found. 0038 00-3