AFDZP0BA – VCM Zapi 2uC - User Manual
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SLAVE
1) WATCHDOG
Cause:
A software watchdog is programmed inside each microcontroller. Its role is to
check the correct operation of the software. All functions are blocked.
Troubleshooting:
it is an internal error, the module must be replaced.
2) LOGIC FAILURE #1
Cause:
This alarm signals that an undervoltage at the key input has been detected.
All functions are blocked.
Troubleshooting depends on which is the reason of the alarm:
A) A real undervoltage situation happened. The alarm should disappear by
simply switching off and on again the key. The cause of the
undervoltage event has to be found on the application. For example: a
truck function requesting a very large battery current may decrease too
much the battery voltage.
B) Fault in the circuit which detects the undervoltage condition. The board
must be replaced
3) OUT 1/2 COIL SH
Cause:
This alarm occurs when there is a short circuit of the EVP1 or EVP2 coil.
After the overload condition has been removed, the alarm exits automatically
by releasing and then enabling a travel demand.
Troubleshooting:
A) The typical root cause for this error code to be 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.
B) In case no failures/problems have been found externally, the problem is
in the controller, which has to be replaced.
4) OUT 3/4 COIL SH
Cause:
This alarm occurs when there is a short circuit of the EVP3 or EVP4 coil.
After the overload condition has been removed, the alarm exits automatically
by releasing and then enabling a travel demand.
Troubleshooting:
A) The typical root cause for this error code to be 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.
B) In case no failures/problems have been found externally, the problem is
in the controller, which has to be replaced.
5) OUT 5/6 COIL SH
Cause:
This alarm occurs when there is a short circuit of the EVP5 or EVP6 coil.
After the overload condition has been removed, the alarm exits automatically
by releasing and then enabling a travel demand.
Troubleshooting:
A) The typical root cause for this error code to be displayed is in the harness
or in the load coil. So the very first check to carry out concerns
