SECURITY LIGHT: 21, DTC: B1213/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]SM2445823
SECURITY LIGHT: 21, DTC: B1213/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]

id09021h396600

DTC

Security light flashing pattern

21

Only one key ID number is registered

M-MDS display

Keyless control module

B1213

PCM

P1260:00
DETECTION CONDITION
• Only one key is registered
POSSIBLE CAUSE
• Only one registered key


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 (ADVANCED KEYLESS ENTRY AND START SYSTEM)].)
• Are two or more keys registered?
Yes
Replace the keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No
• Using the M-MDS, clear the key ID number and register a new key if necessary. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
• 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/P1260:00
Yes
Replace the keyless control module and perform the resetting procedure for the immobilizer system when replacing the keyless control module.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No
DTC troubleshooting completed.