TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
Page 228 of 870
TM 9-2350-247-20-1 BLACKOUT DRIVE LIGHT DOES NOT WORKâContinued 0035 00 3Y 1. Install main harness plug on BO DRIVE light. 2. Partially remove instrument panel (WP 0256 00). 3. Remove main harness circuit 19 (1) and 520 (2) from IR/BO select switch jacks (3) and (4). 4. Measure resistance between IR/BO select switch jacks (3) and (4) with select switch on BO. 5. Does multimeter read 0 ohms? YES NO 3YN 1. Install main harness plug on BO DRIVE light. 2. Replace infrared-blackout select switch (WP 0263 00). 3. Verify no faults found. 4Y 1. Remove main harness plug (1) from light switch jack (2). 2. Turn light switch to BO DRIVE. 3. Measure resistance between light switch jack (2) pins D (3) and F (4). 4. Does multimeter read 0 ohms? YES NO 4YN 1. Install main harness plugs on IR/BO select switch jacks. 2. Replace light switch (WP 0262 00). 3. Verify no faults found. 0035 00-2