PREVOST H3-41 Maintenance Manual page 338

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SECTION 07: TRANSMISSION
FUNCTION
PID/SID
Sensor for
the speed on
the
mainshaft
(SESM)
54
PA1621 Maintenance Manual All Series | January 2017
ERROR
FMI
J1587
Activate: The
sensor indicates
wrong traveling
Data erratic,
direction
FMI2
intermittent or
Deactivate: The
incorrect
sensor indicates
correct traveling
direction
CONDITION
SYMPTOM
Yellow lamp is
sent
Reduced gear
change
performance
COMMENT
of the shift cylinder1R
(SEPo1R)
The sensor for the position
of the shift cylinder 23
(SEPo23)
The sensor for the position
of teh range cylinder
(SEPoR)
Detailed conditions to
activate
The following conditions
must be fulfilled for a time of
2.0s in order to activate:
The input shaft speed
calculated from the
countershaft speed sensor
(SESC) is above 300 rpm
and the clutch is engaged
or The input shaft speed
calculated from the
countershaft speed sensor
(SECS) is above 600 rpm,
the clutch position is more
engaged than the slip point
and the engine speed is
received from the engine
ECU and above 600rpm.
A forward gear is engaged
in the gearbox and the main
shaft speed sensor (SESM)
indicates reverse movement
or a reverse gear is
engaged and the main shaft
speed sensor (SESM)
indicates forward movement
There is no other active fault
on the sensor for the main
shaft speed (SESM)
There is no active fault on
any of:
-The sensor for the
countershaft speed (SECS)
-The sensor for the clutch
position (SePoC)
-The sensor for the position
of the split cylinder (SePoS)
-The sensor for the position
of the shift cylinder (1R
SEPo1R)
-The sensor for the position
of the shift cylinder (23
SEPo23)
-The sensor for the range
cylinder (SEPoR)
The fault is deactivated if
the following conditions are
fulfilled for a time of 2,0s:
The input shaft speed
calculated from the counter
shaft speed sensor (SECS)
is above 300 rpm and the
clutch is engaged or The
input shaft speed calculated
from the counter shaft
speed sensor (SECS) is

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