SECURITY LIGHT: 12, DTC: B2103/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]SM2445817
SECURITY LIGHT: 12, DTC: B2103/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]

id09021h354300

DTC

Security light flashing pattern

12

• Coil antenna malfunction
• The PCM determined a malfunction in the coil antenna even though it is normal

M-MDS display

Keyless control module

B2103

PCM

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 keyless control module 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/P1260:00
Yes
Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM.
(See PCM REMOVAL/INSTALLATION [L3 Turbo].)
(See PCM REMOVAL/INSTALLATION [L5].)
(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No
DTC troubleshooting completed.