SECURITY LIGHT 12, DTC B2103/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5800700

DTC | Security light flashing pattern | 12 | • Coil antenna malfunction • PCM determined a malfunction in coil antenna even though it is normal.
--- | --- | --- | ---
M-MDS display | Instrument cluster | B2103
PCM | P1260
POSSIBLE CAUSE | • Poor connection of the coil antenna connector • Coil antenna malfunction • PCM malfunction

Diagnostic Procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT CONNECTOR CONNECTION • Are the coil antenna connector and the instrument cluster connector securely connected? | Yes | Replace the coil antenna, then go to the next step. (See COIL ANTENNA REMOVAL/INSTALLATION.)
No | Connect the connector securely.
2 | INSPECT PCM • Turn the ignition switch to the ON position. • Is the DTC displayed? ― Security light: 12 ― M-MDS: B2103/P1260 | Yes | Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See PCM REMOVAL/INSTALLATION [L8, LF].) (See COIL ANTENNA REMOVAL/INSTALLATION.)
No | DTC troubleshooting completed.