PREVOST H3-41 Manual page 101

4. To view the third, fourth and fifth positions
(d3, d4 and d5), momentarily press the
MODE push-button as explained above.
5. Pressing the
momentarily after the fifth position is
displayed will return the code display to the
first position (d1).
6. Any code which is active will be indicated by
the MODE ON indicator (active indicator)
being illuminated while in that code position.
While in the normal operating mode, the
MODE ON indicator is illuminated to indicate
the ECONOMY mode operation. Refer to
"Controls & Instruments" chapter under
MODE.
7. Any code position in the list which does not
have a diagnostic code logged will display "-
-" for both the main and sub code displays.
All positions after a code position without any
code stored will also display "- -".
Clearing Codes:
Clear codes as follows:
1. Clearing of the
automatically done at ECU power-down for
all codes except code "69 34".
2. Some codes will clear the active indicator
automatically when the condition causing the
code is no longer detected by the ECU.
Refer to the "Diagnostic Code List and
Description" table in this chapter.
3. Manual clearing is possible while in the
diagnostic display mode and after the
condition causing the code is corrected
(output speed must be zero).
•
To clear all active indicators, hold down the
MODE push-button continuously for 3
seconds until the shift selector tone sounds
for 0.5 seconds.
•
Release the MODE push-button to return to
normal operating mode.
causing the code was not active at the time,
the active indicator will go out.
MODE push-button
active indicator is
If the condition
8-11
TECHNICAL INFORMATION
NOTE :
If clearing a code while locked in a drive
(D) or reverse (R) position (fail-to-range), the
transmission will still be in drive (D) or reverse (R)
when the clearing procedure is completed.
Neutral (N) must be manually selected.
Exiting the Diagnostic Display Mode:
The diagnostic display mode can be exited by any
of the following methods:
1. Press the " " (up arrow) and " " (down
arrow) push-buttons at the same time on the
push-button shift selector.
2. Press any range button, "D", "N" or "R" on
the push-button shift selector (the shift will
be commanded if it is not inhibited by an
active code).
3. Do nothing and wait until the calibrated time
(approximately 10 minutes) has passed.
The system will automatically return to the
normal operating mode.
4. Turn off power to the ECU (shut-off the
engine with the ignition key).
5. After clearing the
described in "Clearing Codes" section.
Clearing Records from the Code List
in Memory
If the active indicator has been successfully
cleared manually, and the MODE push-button is
held down continuously for ten seconds while in
the display mode until a tone sounds, all
diagnostic records in the code list that are not
active will be cleared and the remaining records
will be moved up the code list.
Code Chart Abbreviations
The following responses are used in the
"Diagnostic Code List and Description" table to
command safe operation when diagnostic codes
are set.
active indicator as