PREVOST H3-41 Maintenance Manual page 323

FUNCTION
PID/SID
Gears 2/3
engagement
system
Gears 2/3
engagement
system
ERROR
FMI
J1587
Conditions to
set the fault
Unintentional
code:
disengageme
-The 2/3 cylinder
nt of neutral
FMI2 leaves the
gear (2:nd
neutral position
and 3:rd gear
- The 2/3
cylinder)
cylinder valves
are inactive
Conditions to
Blocked set the fault
FMI11 engagement code:
of 2:nd gear -The 2:nd gear
can not engage
PA1621 Maintenance Manual All Series | January 2017
SECTION 07: TRANSMISSION
CONDITION SYMPTOM
Yellow lamp is
sent
Yellow lamp is
sent
Loss of torque
The 2:nd gear
will not be
selected by the
system for a
short while. After
five successful
gearshifts a new
attempt to use
2:nd gear may
be made
COMMENT
shift to 3:rd gear
- There is no active fault
code for low air pressure
Note: The fault will always
have the state inactive.
Check the fault count and
last occurrence to get more
information.
Detailed conditions to
activate/deactivate
The following conditions
must be fulfilled three times
(only once if the fault code-
filter is switched OFF) in a
row in order to set the fault
code:
(engagement of another
gear will reset the count)
- The 2/3 cylinder position
indicates that the 2/3 gear
leaves the neutral position
- The 2/3 cylinder valves are
inactive
- There is no active fault on
any of the sensor for the
position of the 2/3 cylinder
(SEPo23) the valve for shift
to 2:nd gear the valve for
shift to 3:rd gear
- There is no active fault
code for low air pressure
Note: The fault will always
have the state inactive.
Check the fault count and
last occurrence to get more
information.
Detailed conditions to
activate/deactivate
The following conditions
must be fulfilled three times
(only once if the fault code-
filter is switched OFF) in a
row in order to set the fault
code:
(engagement of another
gear will reset the count)
- The valve for reaching
2:nd gear is activated for at
least 0.8s
- The 2/3 cylinder position
sensor indicates that 2:nd
position is not engaged
- There is no active fault on
any of the 2/3 position
sensor (SEPo23) the valve
for shift to 2:nd gear the
valve for shift to 3:rd gear
- There is no active fault
code for low air pressure
The fault is deactivated if
any of the following
conditions are fulfilled:
- The 2/3 position sensor
indicates that 2:nd 2;nd
position is engaged
- There is an active fault
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