Communication between the ECM and the SMARTRA.
Function of the SMARTRA and the transponder.
Data (stored in the ECM) related to the immobilizer function.
There are four different faults that are assigned to the immobilizer system. Every fault is broken down into four different types (circuit malfunction, circuit range / performance problem, low input, high input). The following table shows the assignment of immobilizer related faults to each type :
Immobilizer Related Faults | Fault types | Diagnostic codes |
Transponder Fault | Invalid transponder data | P1801 |
Transponder not in password mode or transport data has been changed | ||
Programming error | ||
SMARTRA Fault | Antenna error | P1800 |
Invalid request from ECM or corrupted data | P1803 | |
No answer from SMARTRA | P1610 | |
Invalid message from SMARTRA to ECM | ||
EEPROM | Inconsistent data of EEPROM | P1805 |
Invalid write operation to EEPROM | ||
Immobilizer indicator or ECM Faults | Not plausible immobilizer indicator stored at ECM | P1805 |
No valid data from SMARTRA after 3 attempts by ECM | ||
Invalid tester message or unexpected requests by tester |
