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Code
Alarm
253
SLIP PROFILE
KM CLOSED
254
AUX DRIVER
SHORTED
KS CLOSED
Pump
EPS
Traction
(P)
(E)
(T)
Cause:
There is an error on the choice of the parameters of the
slip profile.
Troubleshooting:
Check in the hardware setting menu the value of those
parameters.
This alarm occurs at key on if the slave uC detects the
safety contact, of the main uC, closed prior to be
commanded. This alarm occurs if the connection CNA#5
(K1) is around a voltage of 12 Vdc when switching on the
key. In fact, when the safety contacts are open, K1 is
expected being connected to a battery voltage (not 12
V). Search for a harness problem or replace the
controller.
Cause :
The driver of the electro mechanical brake coil is shorted.
Troubleshooting :
A)
Check if there is a short or a low impedance pull-down
between NEB CNA#4 and -BATT.
B)
The driver circuit is damaged in the controller, which
has to be replaced.
Cause :
The driver of the electro mechanic brake/auxiliary electro
valve coil is shorted.
Troubleshooting :
A)
Check if there is a short or a low impedance pull-down
between NEB/NAUX (CNA#18) and -BATT.
B)
The driver circuit is damaged in the logic board, which
has to be replaced.
This alarm occurs if the main uC detects the safety
contact, of the slave uC, closed prior to be commanded.
This alarm occurs if the connection CNA#4 (NK1) is
around a voltage of 12 Vdc when switching on the key.
In fact, when the safety contacts are open, NK1 is
expected being connected to a minus battery voltage
(not 12 V). Search for a harness problem or replace the
controller.
7-100
Description
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