Stop And Check Telltale Lights - PREVOST H3-45 2023 Operator's Manual

4-32 Controls and Instruments

STOP AND CHECK TELLTALE LIGHTS

STOP and CHECK telltale lights illuminate
automatically to draw the attention of the driver
and their associated messages are displayed in
the DID. More than
"Acknowledging Messages" below) can be active
at the same time. A displayed message can be
replaced by a new message provided the new
message has a higher priority. Only fault codes
that have a direct impact on vehicle operation are
displayed. All fault codes are stored in the
appropriate ECU for
technicians.
Stop Telltale Light
In the event of a serious fault, the red STOP
telltale light comes on and an audible alarm will
sound if the engine is running. An illuminated stop
message light indicates a serious problem has
been detected, and the driver must respond
immediately to the problem.
When illuminating, this telltale light means the
vehicle must be safely pulled off the road and
stopped. In some instances, the engine must be
switched off immediately.
WARNING
Failure to stop and take necessary action when
the STOP telltale light is on can result in an
automatic engine derate and shutdown.
In some cases preventive action may be taken by
the engine ECU to protect the engine. For further
details, refer to "ENGINE
SYSTEM" on page 6
Procedures.
Check Telltale Light
This telltale light means that a fault or an
abnormal operating condition has been detected.
The vehicle must be checked at the next stop.
If the CHECK telltale light illuminates, an
associated message is displayed in the DID.
one message (see
access by service
PROTECTION
in Starting and Stopping
PA-1652 Operator's Manual H3-45 Coach
Always pay attention to the associated messages
(see "Acknowledging Messages" below).
Acknowledging Messages
A fault message associated to a STOP or
CHECK telltale light must be acknowledged by
pressing the ESCAPE or ENTER button after
which the display returns to the same status that
existed before the fault occurred. All messages
can be acknowledged. Acknowledgement of pop-
up messages and warnings stops the audible
warning.
Acknowledged but inactive
displayed again when the ignition key is turned to
the START position or they can be read in the
DID menu. Refer to Other Features for more
information on the DID menus.
messages are