PREVOST H3-41 Maintenance Manual page 321

FUNCTION
PID/SID
Gears 1/R
engagement
system
Gears 1/R
engagement
system
ERROR
FMI
J1587
Conditions to
Blocked
set the fault
engagement code:
FMI12
of reverse -The reverse
gear gear can not
engage
Conditions to
Blocked set the fault
engagement
code:
of neutral -The neutral
FMI7
gear (1:st and gear (1:st and
reverse gear
reverse gear
cylinder) cylinder) can not
engage
PA1621 Maintenance Manual All Series | January 2017
SECTION 07: TRANSMISSION
CONDITION SYMPTOM
Yellow lamp is
sent
The R gear can
not engage, but
the system will
try to engage it
as long as the
gearlever is in
the reverse
position
Yellow lamp is
sent
COMMENT
The fault is deactivated if
any of the following
conditions are fulfilled:
- The 1/R position sensor
indicates that 1:st position is
engaged
- There is an active fault
code on any of the 1/R
position sensor (SEPo1R)
the valve for shift to 1:st
gear the valve for shift to
reverse gear
Detailed conditions to
activate/deactivate
The following conditions
must be fulfilled three times
(only one time 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 the
reverse gear is activated for
at least 0.8s
- The 1/R cylinder position
sensor indicates that R
position is not engaged
- There is no active fault on
any of the 1/R position
sensor (SEPo1R) the valve
for shift to 1:st gear the
valve for shift to reverse
gear
- There is no active fault
code for low air pressure.
The fault is deactivated if
any of the following
conditions are fulfilled:
- The 1/R position sensor
indicates that R position is
engaged
- There is an active fault
code on any of the 1/R
position sensor (SEPo1R)
the valve for shift to 1:st
gear the valve for shift to
reverse gear
Detailed conditions to
activate/deactivate
The following conditions
must be fulfilled three times
(only one time 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 the
reverse gear is activated for
at least 0.8s
- The 1/R cylinder position
sensor indicates that neutral
position is not engaged
- There is no active fault
code on any of the 1/R
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