SECURITY LIGHT: 13, DTC: B2431/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]SM2445822
SECURITY LIGHT: 13, DTC: B2431/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)]

id09021h396500

DTC

Security light flashing pattern

13

Key ID number registration error

M-MDS display

Keyless control module

B2431

PCM

P1260:00
DETECTION CONDITION
• Key ID number registration error
POSSIBLE CAUSE
• Errors during key ID number registration procedure
• Any of the following items are touching or near the key head
― Spare keys
― Keys for other vehicles equipped with an immobilizer system
― Any metallic object
― Any electronic device, or any credit or other cards with magnetic strips


Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY DTC
• Is B2431/P1260:00 displayed?
Yes
Go to Step 3.
No
Go to the next step.
2
VERIFY DTC
• Is B1600/P1260:00 displayed?
Yes
Perform the DTC inspection for “SECURITY LIGHT: 13, M-MDS: B1600/P1260:00”.
(See SECURITY LIGHT: 13, DTC: B1600/P1260:00 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND START SYSTEM)].)
No
Go to the next step.
3
INSPECT KEYLESS CONTROL MODULE
• Using the M-MDS, clear the key ID number and re-register it. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
Note
• Two or more keys must be registered to start the engine.
• Using the registered key, turn the ignition switch to the ON position.
• Verify the DTC Using the M-MDS.
― Is B2431/P1260:00 displayed again?
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.