Diagnosis Of Immobilizer Faults: Notes

Communication between the ECM and the SMARTRA.
Function of the SMARTRA and the transponder.
Data (stored in the ECM related to the immobilizer function.

The following table shows the assignment of immobilizer related faults to each type:

DIAGNOSTIC TROUBLE CODE CHART

Immobilizer Related Faults	Fault types	Diagnostic codes
PCM (ECM) fault	1. Non-Immobilizer-EMS connected to an Immobilizer	P1610
Transponder key fault	Transponder not in password mode Transponder transport data has been changed.	P1674 (Transponder status error)
Transponder key fault	1. Transponder programming error	P1675 (Transponder programming error)
SMARTRA fault	1. Invalid message from SMARTRA to PCM (ECM)	P1676 (SMARTRA message error)
SMARTRA fault	No response from SMARTRA Antenna coil error Communication line error (Open/Short etc.) Invalid message from SMARTRA to PCM (ECM)	P1690 (SMARTRA no response)
Antenna coil fault	1. Antenna coil open/short circuit	P1691 (Antenna coil error)
Immobilizer indicator lamp fault	1. Immobilizer indicator lamp error (Cluster)	P1692 (Immobilizer lamp error)
Transponder key fault	Corrupted data from transponder More than one transponder in the magnetic field (Antenna coil) No transponder (Key without transponder) in the magnetic field (Antenna coil)	P1693 (Transponder no response error/invalid response)
PCM (ECM) fault	1. Request from PCM (ECM) is invalid (Protocol layer violation-Invalid request, check sum error etc.)	P1694 (PCM (ECM) message error)
PCM (ECM) internal permanent memory (EEPROM) fault	PCM (ECM) internal permanent memory (EEPROM) fault Invalid write operation to permanent memory (EEPROM)	P1695 (PCM (ECM) memory error)
Invalid key fault	1. Virgin transponder at PCM (ECM) status "Learnt" Learnt (Invalid) Transponder at PCM (ECM) status "Learnt" (Authentication fail)	P1696 (Authentication fail)
Hi-Scan fault	1. Hi-Scan message error	P1697
Locked by timer	1. Exceeding the maximum limit of Twice IGN ON (2 32 times)	P1699 (Twice IG ON over trial)