Big Joe CB33 - Page 37

BL-CB33-0115 - 03-01-2018 4-19
Table 4-3 STEERING CONTROLLER - Continued
Error Message Possible Cause Fault Elimination
Code Error Text
249 F.B OUT OF
RANGE
This alarm occurs for a fault on
the feedback potentiometer
(CPOT on CNB#6). This alarm
occurs in CPOT exits the range
from 0.3 Vdc to 4.7 Vdc.
Check the connections of the feedback poten-
tiomerter. This alarm occurs when one con-
nection of the feedback potentiometer is
broken.
250 MICRO SLAVE It occurs when the information on
the status bus between the
main uC and the slave uC is
frozen to the OFF value (the
slave uC does not update the
status bus configuration).
It is necessary to replace the controller.
251 KM OPEN This alarm occurs if the slave uC
detects the safety contact, of
the main uC, o[pen when
expected being closed.
It is necessary to replace the controller.
252 KS OPEN This alarm occurs if the slave uC
detects the safety contact, of
the main uC, open when
expected being closed.
It is necessary to replace the controller.
253 KM CLOSED This alarm occurs at key-on if the
slave uC detects the safety
contact, of the main uC, closed
prior to being 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 to
be plus battery voltage (not 12 V). Search
for a harness problem or replace the con-
troller.
254 KS CLOSED This alarm occurs if the main uC
detects the safety contact, of
the slave uC, closed prior to
being 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
to be a minus battery voltage (not 12 V).
Search for a harness problem or replace
the controller.