AEMZP0BA - EPS-AC0 - User Manual
Page - 85/95
4) MICRO SLAVE #8
CAN Bus Code = 212
- Cause:
It occurs when the encoder counting of the main uC is not matched
with the encoder counting of the slave uC.
- Remedy:
It is necessary to replace the controller.
5) INPUT ERROR #1
CAN Bus Code = 99
- Cause:
It occurs when the voltage on CNA#4 (NK1: Lower Potential
Terminal of the Safety Contacts (see 7.6) is higher than 12 V
before to turn the safety contacts closed.
- Remedy:
When the safety contacts are open, the voltage on CNA#4 is
expected to be close to 0 Vdc and this is independent from
whether the safety contacts are connected to a plus battery or to a
minus battery (see 7.6). In the first case (safety contacts
connected to a plus battery), when the safety contacts are open,
CNA#4 is connected to a minus battery through a load. Only a
harness mistake may connect NK1 to a higher than 12 V voltage.
6) SERIAL ERR #1
CAN Bus Code = 6
- Cause:
Main uC and Slave uC communicate via a local serial interface.
This alarm occurs when the slave uC does not receive the
communication from the main uC through this serial interface.
- Remedy:
It is necessary to replace the controller.
7) SLAVE COM. ERROR
CAN Bus Code = 227
- Cause:
Main uC and Slave uC communicate via a local serial interface.
This alarm occurs when the main uC does not receive the
communication from the slave uC through this serial interface.
- Remedy:
It is necessary to replace the controller.
8) NO SYNC
CAN Bus Code = 226
- Cause:
Every 16msec, inside the code cycle, the main uC rises and then
lowers an input for the slave uC (SYNC). When the slave uC
detects no edge for more than 100 msec on this input, this alarm
occurs. This is just a watch dog function: when the main uC does
not execute the code cycle it does not update the SYNC signal and
the slave uC cuts off the steer and traction.
- Remedy:
It is necessary to replace the controller.
9) KM CLOSED
CAN Bus Code = 253
- Cause:
This alarm occurs at key on if the slave uC detects the safety
contact, of the main uC, closed prior to be commanded.
- Remedy:
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.
10) KM OPEN
CAN Bus Code = 251
Summary of Contents for EPS-AC0
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