PREVOST XL Series Manual page 25

The digital display indicates the readout of two (2)
digits:
SELECT - Range of gears selected by the
operator.
MONITOR - Current gear of transmission
operation.
Each time a button is pressed on the shifter a
short "beep" will be heard to identify that the ECU
has received instructions to change operation.
The function of each button is as follows:
Select REVERSE gear by pressing "R" .
Select NEUTRAL by pressing "N" .
raised edge around the "N" button so the driver
can orient his hand to the push-buttons by touch,
without looking at the display. It is not necessary
to press this button prior to starting the vehicle.
Select DRIVE range by pressing "D" .
highest forward gear will appear on the SELECT
display and the transmission will shift to the
starting gear as indicated on the MONITOR
display.
The UPSHIFT and DOWNSHIFT (arrow) buttons
are used to shift to a higher (if not in "D" ) or lower
(if not in "1" ) range selected. One press changes
the range selected by one range. If the button is
pressed continuously,
continues to change up or down until the button is
released or until the highest or lowest possible
range of gears is selected.
Function of the mode button
This button is used to invoke a special function
(mode) that has been programmed into the ECU.
The two most common modes are:
! the "ECONOMY" mode which allows for more
efficient operation of the transmission and
thereby helps contribute to improve fuel
economy. The mode status will be indicated on
the digital display by lighting "MODE ON" when
the function has been selected.
! the "PERF" (performance) mode which allows
for higher performance than the economy mode
but with a higher fuel consumption. The mode
status will be indicated on the digital display by
lighting "MODE ON" when the function has
been selected.
Note the
The
the range selected
Shift schedule
PRIMARY - This shift schedule is used each time
the vehicle is started. Typically, this is used for
normal vehicle operation.
SECONDARY
schedule that the ECU may use upon request.
Select the secondary shift schedule ( ECONOMY )
via the MODE button.
HOLD UPSHIFT - This shift schedule permits
upshifts if an overspeed condition should occur by
the transmission remaining in a lower range.
These shifts occur at speeds higher than normal
upshifts.
In most cases the control system logic protects
the transmission from abuse. Such actions as full
throttle neutral-to-range shifts and high speed
direction changes are inhibited.
Operation
When a push-button pad is depressed, a beep
sounds and the pad lights up indicating the
transmission is ready to operate in the selected
range. When the electronic control system
detects a serious problem in the transmission, a
buzzing tone sounds for 5 seconds, and the "DO
NOT SHIFT" light on the dashboard (see page 2-
11) illuminates to warn the driver that the
transmission is held-in-gear. If another pad is
depressed, the buzzing sound will continue until
the original range is selected.
NOTE:
As a light bulb and systems check, the
"DO NOT SHIFT" light will illuminate when the
ignition switch is turned "ON". After about two
seconds the light will turn off. If the "DO NOT
SHIFT" light remains on, the self-diagnostic
system has detected a problem. If the problem
disappears, the light will go out, but a trouble code
will remain stored in the ECU.
A) Reverse (R)
Use this position to back up vehicle.
completely before shifting from forward to reverse
or from reverse to forward. Touch the reverse (R)
pad, the pad will light up and the reverse warning
signal will be activated.
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CONTROLS/INSTRUMENTS
- This is an alternate shift
Stop