BL-CB33-0115 - 03-01-2018 4-9
Table 4-2 TRACTION CONTROLLER - Continued
Error Message Possible Cause Fault Elimination
Code Error Text
98 DEAD MAN
ABSENT
This warning (present only in
trucks with “Dead Man” switch)
appears when the “Dead Man”
switch is open.
At the next travel request with dead man
switch closed, the warning disappears.
76 VALVE COIL
SHORTED
This alarm occurs when there is a
short circuit on an on/off valve
coil.
• If the fault is present at start up, it is very
likely that the hw overcurrent protection cir-
cuit is damaged, it is necessary to replace
the controller.
• If the fault is present when the controller
drives the outputs, the problem is located in
the harness and in the coils.
74 EV1/5 DRIVER
SHORTED
Electrovalve EV1 or EV2 driver is
shorted
Check if there is a short or a low impedance
between the negative of one of these coils
and -BAT. Otherwise the driver circuit is
damaged and the controller must be
replaced.
74 EV2 DRIVER
SHORTED
Electrovalve EV2 driver is shorted Check if there is a short or a low impedance
between the negative of this coil and -BAT.
This warning also occurs if the external
load is not present and the parameter EV2
in the “Set Options” menu is set “PRES-
ENT”, in this case the warning disappears
setting the EV2 parameter “ADBSENT”.
Otherwise the driver circuit is damaged and
the controller must be replaced.
74 EV3 DRIVER
SHORTED
Electrovalve EV3 driver is shorted Check if there is a short or a low impedance
between the negative of this coil and -BAT.
This warning also occurs if the external
load is not present and the parameter EV3
in the “Set Options” menu is set “PRES-
ENT”, in this case the warning disappears
setting the EV3 parameter “ADBSENT”.
Otherwise the driver circuit is damaged and
the controller must be replaced.
74 EV4 DRIVER
SHORTED
Electrovalve EV4 driver is shorted Check if there is a short or a low impedance
between the negative of this coil and -BAT.
This warning also occurs if the external
load is not present and the parameter EV4
in the “Set Options” menu is set “PRES-
ENT”, in this case the warning disappears
setting the EV4 parameter “ADBSENT”.
Otherwise the driver circuit is damaged and
the controller must be replaced.
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