ON-BOARD DIAGNOSTIC SYSTEM OUTLINE [IMMOBILIZER SYSTEM]

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• The immobilizer system is provided with a malfunction diagnosis function.

• Malfunction diagnosis of the immobilizer system occurs automatically when the ignition switch is turned from the LOCK (ACC) to the ON (START) position.

• If the results of the malfunction diagnosis show a malfunction in the immobilizer system, the security light displays a DTC. At the same time, DTCs are stored in the PCM and instrument cluster. The stored DTCs can be verified using the WDS or equivalent.

Caution

• Always use the WDS or equivalent to verify DTCs even if the security light display a DTC. If the security light itself has a malfunction, it is possible that a DTC may not be properly displayed. There are certain DTCs which can only be verified using the WDS or equivalent, not the security light.

• DTCs for the immobilizer system that are stored in the instrument cluster and PCM are cleared when the ignition switch is turned from the ON to the LOCK (ACC) position.

DTC Table


DTC			Description
Security light	Security light flashing pattern	WDS	Description
11		B1681	Coil signal is not received.
12		B2103	Coil failure.
13		B1600	ID number signal is not received.
13		B2431	Transponder programming failure.
14		B1602	PCM received invalid format of ID number from transponder.
15		B1601	PCM received incorrect ID number from key (transponder).
21		B1213	Number of valid keys is below minimum.
Not illuminated	-	B1342	PCM is defective.