Description of On-Board Diagnostics
DIAGNOSIS SYSTEMDescription
The ECM controls the function of the immobilizer system on the vehicle.
Data of the immobilizer system and the Diagnostic Trouble Code (DTC) can be read in the Data Link Connector 3 (DLC3) of the vehicle. When a malfunction occurs in the immobilizer system, even though the security indicator lamp does not come on, DTCs can be checked.
Therefore, when the immobilizer system seems to be malfunctioning, use the hand-held tester to check for a malfunction and repair it.