2 0 0 8 K n I G h t
chassIs InformatIon — 10
21
No display is an indicator of electrical problems
with the engine batteries, ECU or the shift
selector.
Keypad Functions:
Select the Reverse gear by pressing
R
.
RR will display.
Select Neutral by pressing
N
. The area
around the
N
button has a raised ridge so
the driver can orient his hand to the push
buttons by touch without looking at the
display.
Select Drive range by pressing
D
. The
highest forward gear (6th gear) appears
in the display and the transmission will
shift to first gear indicated as 6 1.
The Up and Down arrow buttons are
used to select a higher (if not in “6”)
or lower (if not in “1”) forward range.
These buttons are not functional in
Neutral or Reverse.
When in Drive, one press changes the
gear range selected by one. If the button
is held continuously, the selected range
will continue to change up or down
until the button is released or until the
highest/lowest possible range of gears is
selected.
The Mode button enables a secondary
shift point to be selected. This is
commonly referred to as Economy
mode. Economy mode affects the upshift
schedule 3-4, 4-5, 5-6 and downshift
schedule 6-5, 5-4, 4-3. During highway
driving, with the cruise control set
between 55 and 65 m.p.h., setting the
transmission to economy mode will
eliminate about 99% of transmission
downshifts from sixth to fifth when
incurring a slight incline or overpass.
CAUTION
DO NOT use Economy Mode in heavy
stop and go traffic or mountainous
terrains. Frequent shifting while using
heavy throttle occurs in Economy
Mode and increases transmission fluid
temperature. Exit Economy Mode until
road conditions improve.
NOTE
The Mode button is used by the service
technician to access diagnostic codes
when troubleshooting. The diagnostic
circuitry must be enabled to display.
NOTE
Cruise control switch enabled alerts
the shift schedule. Turn off the cruise
power switch in congested traffic and
mountainous terrain.
CAUTION
Engine temperature may rise when
ascending long grades using full throttle.
Towing a load will increase the demand
on the engine. If this occurs, manually
shift the transmission to the next lower
gear and use less throttle. The engine
will use less fuel and RPM should
increase.
NOTE
The transmission will not accept a
manually selected gear change to occur
if the gear selected is out of the specified
operating range.
NOTE
The transmission will not shift into gear
from Neutral if the engine RPM is at or
above 900. The display will flash “66”
indicating the engine RPM is excessive.
Select “N” and lower engine RPM.
Check Trans Indicator
The electronic control system of the
transmission is programmed to inform the
operator of a problem with the transmission
system and reacts automatically to protect the
operator, motorhome and transmission. When
the Electronic Control Unit (ECU) detects a DO
NOT SHIFT (DNS) condition the ECU restricts
shifting, turns on the CHECK TRANS light in
the instrument panel and registers a fault code.
NOTE
For some problems, fault codes may be
registered without the ECU activating
the CHECK TRANS light. An Allison
Transmission authorized service outlet
should be consulted whenever there is a
transmission related concern. They have
the equipment to check diagnostic codes
and correct problems which may arise.
Each time the engine is started the CHECK
TRANS icon will light, then turn off after a few
seconds. This momentary lighting is to indicate
that the status light circuit is working properly.
If the CHECK TRANS light does not illuminate
during start up, or if the light remains on after
start up, the transmission system should be
checked immediately.
Summary of Contents for 2008 Knight
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Page 46: ...driving safety 2 42 2008 Knight Weighing Procedure Worksheet Example Worksheet 020255b conv...
Page 47: ...2008 KNight 43 driving safety 2 Weight Record Sheet Actual Worksheet 020255b...
Page 52: ...driving safety 2 48 2008 Knight Notes...
Page 76: ...exterior interior care 3 72 2008 Knight Notes...
Page 190: ...electrical systems chassis 9 186 2008 Knight engine no start flow chart...
Page 233: ...2008 KNight chassis information 10 229 Notes...
Page 237: ...2008 KNight chassis information 10 233 Battery Specification Charts...
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