PREVOST H3-41 Maintenance Manual page 297

To enter the filter
simultaneously the
(Downshift) arrows three times. An acceptable
filter life status is displayed as "OIL FILTER OK".
An 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 running. The
TRANSMISSION SERVICE
illuminates briefly following
acknowledge the reset was successful.
3.4.4 Transmission Health Monitor
This prognostic feature determines clutch life
status of the transmission's clutches and alerts
you when clutch maintenance is required. The
clutch life status is determined by monitoring
changes and the calculated running clearance of
the transmission clutches.
Clutch Maintenance Notification
The transmission health
determines when clutch maintenance is needed.
If any of the clutches (except lockup) reaches a
remaining life of approximately 10% or if any of
the clutch running clearances exceeds a
maximum value, then the TRANSMISSION
SERVICE indicator is steadily illuminated from
just after ignition on until ignition is turned off.
Thereafter, the indicator will be lit upon each
initialization of the TCM, and will remain on
steady during all vehicle operation until service is
performed and the indicator is reset. If the
transmission health monitor mode has been
accessed via the shift selector, a "TRANS
HEALTH OK" or "TRANS HEALTH LO" is
displayed. An acceptable clutch life status is
displayed as "TRANS HEALTH OK".
unacceptable clutch life status is displayed as
"TRANS HEALTH LO".
Read and Reset Transmission Health Monitor
from Selector
To enter the transmission health monitor, press
simultaneously the
life monitor, press
(Upshift) and
indicator
a reset to
monitor feature
An
(Upshift) and
SECTION 07: TRANSMISSION
(Downshift) arrows four times. An acceptable
clutch life status is displayed as "TRANS
HEALTH OK". An unacceptable filter life status is
displayed as "TRANS HEALTH LO".
The feature will reset automatically upon
elimination of the clutch clearance condition
which initiated it. The indicator can also be
manually reset using the Allison DOC™ for PC
diagnostics program if necessary.
PA1621 Maintenance Manual All Series | January 2017
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