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 INFRARED HEADLIGHT(S) DOES NOT OPERATE—Continued 0037 00 4Y 1. Measure resistance between main harness circuit 514/515 selector switch plug (1) and beam selector switch plug (2) pin C (3). 2. Does multimeter read 0 ohms? YES NO 4YN 1. Install beam selector switch and main harness plug on beam selector switch. 2. Repair main harness circuit 514/515 (WP 0294 00). 3. Verify no faults found. 5Y 1. Install beam selector switch and main wiring harness plug on beam selector switch. 2. Install main wiring harness circuit 514/515 plug on IR/BO select switch jack. 3. Remove main harness plug (1) from light switch jack (2). 4. Measure resistance between wiring main harness light switch plug (1) pin D (3) and IR/BO select circuit 520 plug (4). 5. Does multimeter read 0 ohms? YES NO 5YN 1. Repair main wiring harness circuit 520 (WP 0294 00). 2. Verify no faults found. 0037 00-3