SECURITY LIGHT 13, DTC B2431/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

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DTC

Security light flashing pattern

13

Key ID number registration error

M-MDS display

Instrument cluster

B2431

PCM

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


Diagnostic Procedure

STEP

INSPECTION

ACTION
1
VERIFY DTC
•  Is B2431/P1260 displayed?
Yes
Go to Step 3.
No
Go to the next step.
2
VERIFY DTC
•  Is B1600/P1260 displayed?
Yes
Perform the DTC inspection for “SECURITY LIGHT: 13, M-MDS: B1600/P1260”.
(See SECURITY LIGHT 13, DTC B1600/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
No
Go to the next step.
3
INSPECT INSTRUMENT CLUSTER
•  Using the M-MDS, clear the key ID number and re-register it.
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 displayed again?
Yes
Replace the instrument cluster and perform the resetting procedure for the immobilizer system when replacing the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
No
DTC troubleshooting completed.