PREVOST H3-41 Maintenance Manual page 318

SECTION 07: TRANSMISSION
FUNCTION
PID/SID
Digital input
flash
NVRAM
PSID254
programmin
g enable
(DIEE)
Digital input
flash
NVRAM
programmin
g enable
(DIEE)
Fast clutch
valves low
PSID5
side (VAF-)
Fast clutch
valves low
side (VAF-)
Gearbox
PSID28
brake
34
PA1621 Maintenance Manual All Series | January 2017
ERROR
FMI
J1587
Activate: The
Voltage voltage level for
above normal DIEE-pin is high
FMI3
or shorted Deactivate: The
high voltage for the
DIEE-pin is low
Active: The
Voltage voltage level for
above normal DIEE-pin is high
FMI3
or shorted Deactivate: The
high voltage for the
DIEE-pin is low
Activate: The
low-side drive is
Voltage
short circuit to
above normal
FMI3 Ubatt
or shorted
Deactivate: The
high
low-side drive is
OK
Activate: 1. The
low-side drive is
short circuit to
Gnd and
Current above 2. There is no
normal or active fault code
FMI6
grounded for short circuit
circuit to Gnd on VAFE
or VAFD
Deactivate: The
low-side drive is
OK
Activate: The
Mechanical
gearbox brake
system not
FMI7 does not brake
responding
when the valve
properly
is activated
CONDITION SYMPTOM
Yellow lamp is
sent
Cranking is
inhibited
Engine can not
start
All
communication
with the control
unit is disabled
except from
programming of
MSW
Yellow lamp is
sent
Yellow lamp is
sent
Fast
engagement/dis
engagement
disabled
Reduced clutch
performance
Gear changes
are slow
Yellow lamp is
sent
Fast
engagement/dis
engagement
disabled
Reduced clutch
performance
Gear changes
are slow
Yellow lamp is
sent
Slow gear
changes at
standstill
COMMENT
speed < 300rpm, deactivate
this fault code
- Continue with the slip point
calibration
The boot-program does not
save any fault codes
If the DIEE-pin is high
during normal operation the
fault code is saved.
Detailed conditions
The following conditions
must be fulfilled for five
activations (only one with
the fault code-filter switched
OFF) of the gearbox brake
in order to activate the fault
code:
- The activation must last for
at least 0.2s
- There is no active fault
code on the sensor for the
split cylinder position
(SEPoS)
- The minimum valve of the
derivative of the input shaft
speed during activation is
greater than -500 rpm/s
- There is no active fault on