SRT55D Off-Highway Truck
3-25
Safety, Operation and Maintenance Manual
Controls and Operating
to operate in First gear. This feature is only
operational in the normal automatic driving
mode, either power or economy. It is not
activated during the manual mode.
Parking Brake Interlock: If the parking brake
is applied while the transmission is in Neutral,
the CEC2 system will prevent a shift out of
Neutral to protect the brake components. If the
parking brake is applied while the transmission
is in gear, the parking brake interlock will not
function and normal shifts will occur.
Lock-in-gear: The lock-in-gear feature is
designed to protect the transmission from
damage should wheel spinning or lockup occur
due to poor traction or panic braking. The ECU
will delay making a shift for several seconds
and then, if the condition fails to correct itself,
locks in gear and prevents any further shifting.
The Check Trans warning light will come on.
If this occurs, the ECU must be reset before
normal operation may be resumed.
Reset the ECU: if the transmission has
locked in gear because of wheel spinning
or emergency brake, stop the truck, select
neutral, apply the parking brake, and shut
down the engine. Turn off battery main switch,
wait ten seconds, then reconnect the main
switch and restart the engine. Select reverse,
then neutral. The "check transmission" and
"inhibit gear shift" warning light should go off.
Cold Weather Starts: During cold weather
starts, if the transmission temperature is below
-24
℃
(-10°F), The "check transmission" and
"forbid gear shifting" warning light will come
on, and the ECU will keep the transmission
at neutral gear. Between -24° C (-10°F) and
-7
℃
(19°F) ,the warning light will go out and
the ECU will only permit operation in First or
Reverse gears. Above -7
℃
(19°F), normal
operation will be permitted.
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