Communication between the ECM and the SMARTRA/ICM.
Function of the SMARTRA/ICM and the transponder.
Data (stored in the ECM/ICM related to the immobilizer function.
Immobilizer Related Faults | Fault types | Diagnostic codes |
Transponder fault | 1. Corrupted data from transponder 2. More than one transponder in the magnetic field (Antenna coil) 3. No transponder (Key without transponder) in the magnetic field (Antenna coil) 4. Transponder not in the password mode 5. Transponder transport data has been changed6. Transponder programming error | P1693 (Transponder no response error/ transponder invalid response, Transponder status error, Transponder programming error) |
SMARTRA/ICM fault | 1. Antenna coil error | P1690(D2.0) P1691(β2.0, δ2.7) (Antenna coil error) |
1. Communication line error (Open/Short etc.) 2. Invalid message from SMARTRA/ICM to ECM | P1678 (δ2.7) P1690 (D2.0, β2.0)(SMARTRA/ICM no response, SMARTRA message error) | |
ECM/ICM internal permanent memory(EEPROM) fault | 1. ECM/I/ICM internal permanent memory (EEPROM) fault 2. Invalid write operation to permanent memory (EEPROM) | P1677 (δ2.7) P1695(D2.0, β2.0) (ECM/ICM memory error) |
ECM/ICM fault | 1. Request from ECM/ICM is invalid (Protocol layer violation- Invalid request, check sum error etc.) | P1679 (δ2.7) P1694(D2.0, β2.0) (ECM/ICM message error) |
Immobilizer indicator lamp error | Immobilizer indicator lamp error (Cluster) | P1692(D2.0, β2.0) (Immobilizer lamp error) |
Tester (HI-SCAN) fault | 1. Request from tester is invalid(Protocol layer violation- Invalid request, check sum error etc.) | P1697(D2.0, β2.0) (Tester message error) |
Invalid key fault | 1. Virgin transponder at EMS status “Learnt” 2. Learnt (Invalid) Transponder at EMS status “Learnt”(Authentication fail) | P1696(D2.0, β2.0), P1698(D2.0, β2.0) (Authentication fail) |
Problem | Part set | Hi-scan (pro) required? |
All keys have been lost | Blank key (4) | YES |
Antenna coil unit does not work | Antenna coil unit | NO |
ECM/ICM does not work | ECM/ICM | YES |
Ignition switch does not work | Ignition switch with Antenna coil unit | YES |
Unidentified vehicle specific data occurs | Key, ECM/ICM | YES |
SMARTRA unit does not work | SMARTRA unit | NO |
In case of a defective ECM/ICM, the unit has to be replaced with a "virgin" or "neutral" ECM/ICM. All keys have to be taught to the new ECM/ICM. Keys, which are not taught to the ECM/ICM, are invalid for the new ECM/ICM (Refer to key teaching procedure). The vehicle specific data have to be left unchanged due to the unique programming of transponder.
In case of a defective SMARTRA, there is no special procedure required. A new SMARTRA device simply replaces the old one. There are no transponder-related data stored in this device.
The ECM/ICM can be set to the "neutral" status by a tester.
A valid ignition key is inserted and after ignition on is recorded, the ECM/ICM requests the vehicle specific data from the tester. The communication messages are described at "Neutral Mode". After successfully receiving the data, the ECM/ICM is neutralized.
The ECM/ICM remains locked. Neither the limp home mode nor the "twice ignition on" function, is accepted by the ECM/ICM.
The teaching of keys follows the procedure described for the virgin ECM/ICM. The vehicle specific data have to be unchanged due to the unique programming of the transponder. If data should be changed, new keys with a virgin transponder are requested.
