Filter Life Monitor - PREVOST H3-45 VIP Owner's Manual

C-4 Allison Transmission Other Features
The TRANSMISSION SERVICE indicator flashes
if TES389 is the current setting and illuminates
solidly if TES295 is the current setting. To change
the transmission fluid type, wait 5 seconds after
entering transmission fluid type mode and perform
the following sequences to select the proper
transmission type:
N-R-N to select TES295
N-D-N to select TES389
The selector exits 30 seconds after entering
transmission fluid type mode or the ignition may be
turned off to exit earlier. Only one transmission
fluid type selection may be made after entering
transmission fluid type mode. All other attempts
will be ignored. Transmission fluid type mode
needs to be entered again if the wrong type of fluid
is selected.
CAUTION
Verify prognostic fluid type setting matches
transmission fluid type.
notifications will
mismatched. This could result in transmission
damage from running a TES389 fluid too long or
cause shortened TES295 fluid changes to occur.
CAUTION
Required calendar- based oil & filter change
intervals (based on months) still apply because
Oil Life Monitor function cannot measure time
while ignition power is OFF.
If the Oil Life Monitor function has not indicated
the need for a fluid change before 60 months
have passed when using TES295 fluid type or
before 24 months have passed when using
TES389 fluid type, it will be necessary to change
the fluid and filters per calendar requirements
and reset the system.

FILTER LIFE MONITOR

This feature provides
transmission's fluid filters need to be replaced. It
helps extend filter change intervals to reduce
routine maintenance downtime while providing
maximum protection for the transmission.
The filter life indicator pressure switch signals the
transmission control module when fluid exiting the
main filter drops below a predetermined pressure.
Oil Life Monitor
be inaccurate when
an alert when the
PA-1619 Owner's Manual H3-45 VIP
Both the main and lube filters must be changed
when the TRANSMISSION SERVICE indicator
shows the main filter should be changed.
Filter Change Notification
The TRANSMISSION SERVICE indicator
flash for 2 minutes after the first selection of "D"
(drive) range. Once the Filter Monitor mode has
been accessed via the shift selector, the "OIL
FILTER OK" or "REPLACE FILTERS" message
is displayed in the selector display window. An
acceptable filter life status is displayed as "OIL
FILTER OK". An unacceptable filter life status is
displayed as "REPLACE FILTERS".
Once the programmed threshold for maximum
filter pressure drop has been observed and
verified, the diagnostic code P088A Transmission
Filter Maintenance Alert will be recorded to
indicate that the filter has reached the end of its
designed life. At the next initialization of the TCM,
the TRANSMISSION SERVICE indicator
flash for 2 minutes after the first selection of "D"
(drive) range. Thereafter, the indicator will
illuminate and flash upon each TCM initialization,
continuing to flash for 2 minutes after the first
selection of a drive range each time, until service
is performed and the indicator is reset.
Failure to perform maintenance and reset the
monitor after a calibration- defined number of
warnings will result in the illumination of the
CHECK light with associated message in the DID
and diagnostic code P088B will be recorded to
indicate a highly deteriorated filter.
Read And Reset Filter Life Monitor From
Selector
To enter the filter
simultaneously the (Upshift) and
arrows three times. An acceptable filter life status
is displayed as "OIL
unacceptable filter life status is displayed as
"REPLACE FILTERS".
The feature will reset automatically when the main
fluid filter has been changed and the pressure drop
across the filter no longer exceeds the threshold
value. A manual reset can be performed by
depressing and holding the MODE button for ten
(10) seconds while the Filter Life Monitor function
is displayed. It may also be reset by selecting N-
R-N-R-N-D-N on the shift selector, pausing briefly
(less than 3 seconds) between each selector
movement, with the ignition ON and the engine not
will
will
life monitor, press
(Downshift)
FILTER OK". An