SECURITY LIGHT 21, DTC B1213/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5801300

DTC

Security light flashing pattern

21

Only one key ID number is registered.

M-MDS display

Instrument cluster

B1213

PCM

P1260

POSSIBLE CAUSE

Only one key has been programmed.

DTC	Security light flashing pattern	21	Only one key ID number is registered.
POSSIBLE CAUSE	Only one key has been programmed.

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF REGISTERED KEYS

•  Using the M-MDS, perform the PID/data monitor inspection and confirm the number of registered keys.
(See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

•  Are two or more keys registered?

Yes

Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

No

•  Using the M-MDS, clear the key ID number and register a new key if necessary.
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

•  Go to the next step.

2

VERIFY DTC

•  Using the registered key, turn the ignition switch to the ON position.

•  Is the DTC displayed again?

―  Security light: 21

―  M-MDS: B1213/P1260

Yes

Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

No

DTC troubleshooting completed.

DTC	Security light flashing pattern		21	Only one key ID number is registered.
	M-MDS display	Instrument cluster	B1213
	M-MDS display	PCM	P1260
POSSIBLE CAUSE				Only one key has been programmed.

STEP	INSPECTION		ACTION
1	VERIFY NUMBER OF REGISTERED KEYS • Using the M-MDS, perform the PID/data monitor inspection and confirm the number of registered keys. (See PID/DATA MONITOR TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].) • Are two or more keys registered?	Yes	Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
1		No	• Using the M-MDS, clear the key ID number and register a new key if necessary. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) • Go to the next step.
2	VERIFY DTC • Using the registered key, turn the ignition switch to the ON position. • Is the DTC displayed again? ― Security light: 21 ― M-MDS: B1213/P1260	Yes	Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
2		No	DTC troubleshooting completed.