Transmission Health Monitor - PREVOST H3-45 VIP Owner's Manual

Allison Transmission Other Features C-5
running. The TRANSMISSION SERVICE
indicator illuminates briefly following a reset to
acknowledge the reset was successful.

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 monitor feature
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".
An unacceptable clutch life status is displayed as
"TRANS HEALTH LO".
PA-1619 Owner's Manual H3-45 VIP