SECURITY LIGHT: 21, DTC: B1213[IMMOBILIZER SYSTEM (PATS) (L3)]

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Detection Condition

• Only one key is programmed.

Possible Cause

• Only one programmed key

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

VERIFY NUMBER OF PROGRAMMED KEYS

•  Using the M-MDS, perform the PID/data monitor inspection and confirm the number of programmed keys.
(See PID/DATA MONITOR TABLE[IMMOBILIZER SYSTEM (PATS) (L3)].)

•  Are two or more keys programmed?

Note

•  Two or more keys need to be programmed to start the engine.

Yes

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

(See IMMOBILIZER SYSTEM (PATS) KEY ADDITION/CLEARING[L3].)

No

•  Using the M-MDS, clear the key ID number and program a new key if necessary.
(See IMMOBILIZER SYSTEM (PATS) KEY ADDITION/CLEARING[L3].)

•  Go to the next step.

2

VERIFY IF ANY DTCS ARE DISPLAYED

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

•  Is the DTC displayed again?

―  Security light: 21

―  M-MDS: B1213

Yes

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

(See IMMOBILIZER SYSTEM (PATS) KEY ADDITION/CLEARING[L3].)

No

DTC inspection completed.

STEP	INSPECTION		ACTION
1	VERIFY NUMBER OF PROGRAMMED KEYS • Using the M-MDS, perform the PID/data monitor inspection and confirm the number of programmed keys. (See PID/DATA MONITOR TABLE[IMMOBILIZER SYSTEM (PATS) (L3)].) • Are two or more keys programmed? Note • Two or more keys need to be programmed to start the engine.	Yes	Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See IMMOBILIZER SYSTEM (PATS) KEY ADDITION/CLEARING[L3].)
1		No	• Using the M-MDS, clear the key ID number and program a new key if necessary. (See IMMOBILIZER SYSTEM (PATS) KEY ADDITION/CLEARING[L3].) • Go to the next step.
2	VERIFY IF ANY DTCS ARE DISPLAYED • Using the programmed key, turn the ignition switch to the ON position. • Is the DTC displayed again? ― Security light: 21 ― M-MDS: B1213	Yes	Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See IMMOBILIZER SYSTEM (PATS) KEY ADDITION/CLEARING[L3].)
2		No	DTC inspection completed.