SECURITY LIGHT: 12, DTC: B2103/P1260/P1260:00 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

id0902e5001700

SECURITY LIGHT: 12 | • Coil antenna malfunction • The PCM determined a malfunction in the coil antenna even though it is normal
DTC: B2103/P1260/P1260:00
DETECTION CONDITION | • Coil antenna malfunction • The PCM determined a malfunction in the coil antenna even though it is normal
POSSIBLE CAUSE | • Coil antenna malfunction • Poor connection of the coil antenna connector • 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/P1260:00 | Yes | Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) (See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM].)
No | DTC troubleshooting completed.