TM 9-2350-247-20-1
TRANSMISSION DOES NOT HOLD 2ND POSITION (M548A3)—Continued
0080 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 18 volts
or more for socket A (3), C (4), E (5), G (6), and J (7) and 0 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. Remove transmission shift control (WP 0306 00).
4. Place transmission shift control in 1–2 position.
5. Measure resistance between transmission shift control jack (1)
pin M (2) and pins A thru G and N. Multimeter should read 0
ohms for pins A, C, E and G and infinity for all remaining pin
checks. 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.
0080 00-2
