TM 9-2350-247-20-1
TRANSMISSION DOES NOT HOLD 3RD POSITION (M548A3)—Continued
0081 00
Y
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 0 volts for
sockets B (3), D (4), and H (5) and at least 18 volts for the
remaining socket checks.
3. Does multimeter indicate an incorrect reading?
YES
NO
YN
1. Replace wiring harness 12313482
(transmission shift control wiring
harness, WP 0297 00).
2. Verify no faults found.
2Y
1. Turn MASTER SWITCH OFF.
2. Install wiring harness 12313482 plug on transmission jack.
3. Replace transmission shift control (WP 0306 00)
4. Place transmission shift control in 1–3 position.
5. Measure resistance between transmission shift control jack (1)
pin M (2) and pins A thru G and N. Multimeter should read
infinity for pins B and D, and 0 ohms for pins A, C, E, F, and G.
See pin to pin check (WP 0309 00).
6. Does multimeter indicate an incorrect reading?
YES
NO
2YN
1. Install transmission shift control
(WP 0306 00).
2. Replace wiring harness 12313483
(transmission wiring harness,
WP 0297 00).
3. Verify no faults found.
0081 00-2
