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Code
Alarm
234
EV2 DRIVER
SHORTED
EV3 DRIVER
SHORTED
EV4 DRIVER
SHORTED
BRAKE RUN
OUT
235
COIL SHORTED
EV
Pump
EPS
Traction
(P)
(E)
(T)
Description
Cause :
Electrovalve EV2 driver is shorted.
Troubleshooting :
Check if there is a short or a low impedance between the
negative of this coil and -BATT. This warning occurs also
if the external load is not present and the parameter EV2
in the "Set Options" menu is set "PRESENT", in this
case the warning disappears setting the EV2 parameter
"ABSENT". Otherwise the driver circuit is damaged and
the controller must be replaced.
Cause :
Electrovalve EV3 driver is shorted.
Troubleshooting :
Check if there is a short or a low impedance between the
negative of this coil and -BATT. This warning occurs also
if the external load is not present and the parameter EV3
in the "Set Options" menu is set "PRESENT", in this
case the warning disappears setting the EV3 parameter
"ABSENT". Otherwise the driver circuit is damaged and
the controller must be replaced.
Cause :
Electrovalve EV4 driver is shorted.
Troubleshooting :
Check if there is a short or a low impedance between the
negative of this coil and -BATT. This warning occurs also
if the external load is not present and the parameter EV4
in the "Set Options" menu is set "PRESENT", in this
case the warning disappears setting the EV4 parameter
"ABSENT". Otherwise the driver circuit is damaged and
the controller must be replaced.
Cause :
The CPOTBRAKE input red by the microcontroller is at
the maximum value without the hand brake request.
Troubleshooting :
Check the mechanical calibration and the functionality of
the brake potentiometer. If the alarm is not disappeared
the failure is in the ACE logic board, replace it.
Cause :
This alarm occurs when there is a short circuit of one of
the coils connected to outputs of the ac0(electronic valve
coil). After the overload condition has been removed, the
alarm exits automatically by releasing and then enabling
a travel demand.
Troubleshooting:
The typical root cause for this error code to be
A)
displayed is in the harness or in the load coil. So the
very first check to carry out concerns connections
between controller outputs and loads.
In case no failures/problems have been found
B)
externally, the problem is in the controller, which has
to be replaced.
7-92
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