Allison Transmission, Mode Function - Volvo 9700 US/CAN 2016 Driver's Handbook Manual

58 Instruments and controls

Allison transmission, mode function

The MODE button have the following
function. Both ECONOMY (default
mode at starting of the engine) and
PERFORMANCE (secondary shift mode)
modes are equivalent from the first to the
fourth gear as the transmission upshifts at
around 2000 rpm.
The ECONOMY mode allows for upshifts
in fifth and sixth gear at around 1700 rpm.
This is a more efficient operation of the
transmission and thereby helps improve fuel
economy.
The PERFORMANCE mode keeps upshifts
at 2000 rpm in fifth and sixth gears.
This makes for better performance than
the economy mode but with higher fuel
consumption. It is recommended this mode
be selected while driving up or down grades.
The mode indicator (LED) is illuminating
when PERFORMANCE mode is selected.
When a button is depressed on the
transmission control pad, the corresponding
letter or number is displayed indicating
the transmission is ready to operate in the
selected range. If the transmission control
module (TCM) detects a serious problem in
the transmission, the "CHECK" telltale light
will illuminate on the dashboard.
For more information see separate operating
instructions: "Allison Bus Series Operator's
Manual " provide by the transmission
manufacturer.