PREVOST H3-41 Maintenance Manual page 336

SECTION 07: TRANSMISSION
FUNCTION
PID/SID
Sensor for
the speed on
the counter
shaft (SESC)
Sensor for
the speed on
the counter
shaft (SESC)
Sensor for
the speed on
the main
PID160
shaft
(SESM)
52
PA1621 Maintenance Manual All Series | January 2017
ERROR
FMI
J1587
Activate: The
sensor signal is
below normal
Voltage below
range.
FMI4 normal or
Deactivate: The
shorted low
sensor signal is
within normal
range
Activate: The
sensor signal is
above normal
Current below
range
FMI5 normal or
Deactivate: The
open circuit
sensor signal is
within normal
range
Activate: 1.
Sensor signal is
within normal
range and
2. The main
Data valid but shaft speed
below differs from both
FMI1
operational the value of the
range countershaft
speed and the
vehicle speed
received from
the vehicle ECU
Deactivate: 1.
CONDITION SYMPTOM
Yellow lamp is
sent
Reduced gear
change
performance
Gearbox brake
up shifts can not
be used
Slip point cannot
be updated
which will give
reduced
performance at
starts
Start gear
engagement
only possible at
standstill and
when the vehicle
speeds is high
enough to
synchronize the
main box with
the engine
Yellow lamp is
sent
Reduced gear
change
performance
Gearbox brake
up shifts can not
be used
Slip point cannot
be updated
which will give
reduced
performance at
starts
Start gear
engagement
only possible at
standstill and
when the vehicle
speed is high
enough to
synchronize the
main box with
the engine
Yellow lamp is
sent
Reduced gear
change
performance
Reduced gear
change comfort
COMMENT
(SEPo23)
-The sensor for the position
of teh range cylinder
(SEPoR)
Detailed condition to
activate:
The following conditions
must be fulfilled for a time of
2.0s in order to activate:
A gear (not neutral) is
engaged in the gearbox
The value of the input shaft
speed calculated from the
main shaft speed sensor
(SESM) is more than
300rpm, or the value of the
input shaft speed calculated
from the counter shaft