TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
Page 382 of 870
TM 9-2350-247-20-1 CARRIER MOVES WITH TRANSMISSION IN SL (M548A3)—Continued 0074 00 2Y 1. Remove wiring harness 12313482 plug (1) from wiring harness 12313483 jack (2) at carrier bulkhead. 2. Measure voltage between each socket on wiring harness 12313483 jack (2) and ground. Multimeter should read 18 volts or more for sockets B (3), D (4), and E (5) and 0 volts for the remaining socket checks. 3. Does multimeter read less than 18 volts for sockets B, D, and E and doesn’t read 0 volts for all other sockets? YES NO 2YN 1. Replace faulty wiring harness 12313482 (transmission control wiring harness) (WP 0297 00). 2. Verify no faults found. 3Y 1. Turn MASTER SWITCH OFF. 2. Install wiring harness 12313482 plug on transmission jack. 3. Remove transmission shift control (WP 0306 00). 4. Place transmission shift control in SL position. 5. Measure resistance between transmission shift control jack (1) pin M (2) and pins A thru N. Multimeter should read 0 ohms for pins B, D, E, and N and infinity for all remaining pin checks. See pin to pin check (WP 0309 00). 6. Does multimeter read more than 0 ohms for sockets B, D, E, and N and doesn’t read infinity for all other pins? YES NO 3YN 1. Install transmission shift control (WP 0306 00). 2. Replace faulty wiring harness 12313483 (transmission wiring harness) (WP 0297 00). 3. Verify no faults found. 0074 00-2