TM-9-2350-261-20-1 Unit Maintenance Manual Volume 1 M113A2 M577A2 M1064 M1068 M1059 M901A1 Download
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TM 9-2350-261-20-1 BLACKOUT DRIVE LIGHT DOES NOT WORK — Continued 0030 00 3Y 1. Install front main harness plug on BO DRIVE light. 2. Remove instrument panel for access (WP 0238 00). 3. Remove front main harness circuit 19 (1) and 520 (2) from IR/BO selector jacks (3) and (4). 4. Measure resistance between IR/BO selector jacks (3) and (4) with selector on BO. 5. Does multimeter read 0 ohms? 3YN 1. Install harness front main harness plug on BO DRIVE light. 2. Replace IR/BO selector switch (WP 0241 00). 3. Verify no faults found. 4Y 1. Remove front main harness plug (1) from lighting control switch jack (2). 2. Turn lighting control switch to BO DRIVE. 3. Measure resistance between lighting control switch jack (2) pins D (3) and F (4). 4. Does multimeter read 0 ohms? 4YN 1. Install front main harness plug on IR/BO selector switch jacks. 2. Replace lighting control switch (WP 0242 00). 3. Verify no faults found. 0030 00-2