TM-9-2320-343-10
TRUCK, CARGO, 8X8 M985A4 W/WINCH AND M985A4 W/O WINCH
TECHNICAL MANUAL; OPERATOR'S MANUAL
OCTOBER 2008
TM-9-2320-343-10 - Page 129 of 1128
Alison
TRAILER
AIR SUPLY
M
M
TURBINE SPEED
SENSOR
TCM
OUTPUT
SPEED
SENSOR
ENGINE SPEED
SENSOR
CONTROL VALVE
MODULE
1
2
Figure 2.
The TCM also protects the transmission from cold weather startups by inhibiting normal
shifting functions until a minimum sump temperature of 20°F (-7°C) is attained.
A check transmission indicator (2) located on the instrument panel alerts the operator,
momentarily, every time the system is activated as a lamp check, and when the TCM finds
a problem in the system.
If check transmission indicator (2) comes on during vehicle operation, the transmission will
continue to operate normally, in most cases. However, in some cases, the TCM will take
TM 9-2320-343-10
0012
0012-3
Back to Top
