PREVOST H3-41 Manual page 116

- To clear all active indicators, hold down the
MODE push-button
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.
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
described in "Clearing Codes" section.
continuously for
If the condition
the active indicator
Clearing Records from the Code List in
3
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.
DNS (Do Not Shift) Response
- Turn off lock-up clutch and inhibit lock-up
operation.
- Inhibit all shifts.
- Turn on DO NOT SHIFT light.
- Pulse the tone generator for 8 seconds when
the condition is first detected.
- Blank the select digit in the display.
- Ignore any range selection inputs and disable
the push-button feedback tone for the push-
button shift selector.
SOL OFF (Solenoid Off) Response
- All solenoids are commanded off (turning
solenoids "A" and "B" off electrically causes
them to operate hydraulically).
RPR (Return to Previous Range) Response
as
- When the ratio or C3 pressure switch tests
associated with a shift are not passed, the
ECU commands
commanded at the beginning of the shift.
NNC (Neutral No Clutches) Response
- When certain ratio or C3 pressure switch
tests are not passed, the ECU commands a
neutral condition with no clutches applied.
8-13
TECHNICAL INFORMATION
the same range as