SECURITY LIGHT: 13, DTC B2431/P1260 [IMMOBILIZER SYSTEM]

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SECURITY LIGHT: 13

Key ID number registration error

DTC: B2431/P1260

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 USING M-MDS

•  Is B2431/P1260 displayed?

Yes

Go to Step 3.

No

Go to the next step.

2

VERIFY DTC USING M-MDS

•  Is B1600/P1260 displayed?

Yes

SECURITY LIGHT: 13, M-MDS: B1600/P1260.

(See SECURITY LIGHT: 13, DTC B1600/P1260 [IMMOBILIZER 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 [WITH KEYLESS ENTRY 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 displayed again?

Yes

Replace the keyless control module and perform procedures for when replacing the keyless control module only.

(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.)

(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.

SECURITY LIGHT: 13	Key ID number registration error
DTC: B2431/P1260	Key ID number registration error
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
POSSIBLE CAUSE

STEP	INSPECTION		ACTION
1	VERIFY DTC USING M-MDS • Is B2431/P1260 displayed?	Yes	Go to Step 3.
1	VERIFY DTC USING M-MDS • Is B2431/P1260 displayed?	No	Go to the next step.
2	VERIFY DTC USING M-MDS • Is B1600/P1260 displayed?	Yes	SECURITY LIGHT: 13, M-MDS: B1600/P1260. (See SECURITY LIGHT: 13, DTC B1600/P1260 [IMMOBILIZER SYSTEM].)
2	VERIFY DTC USING M-MDS • Is B1600/P1260 displayed?	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 [WITH KEYLESS ENTRY 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 displayed again?	Yes	Replace the keyless control module and perform procedures for when replacing the keyless control module only. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [WITH KEYLESS ENTRY SYSTEM].)
3		No	DTC troubleshooting completed.