SECURITY LIGHT 13, DTC B1600/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]

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DTC

Security light flashing pattern

13

Key ID number data cannot be read

M-MDS display

Instrument cluster

B1600

PCM

P1260

POSSIBLE CAUSE

•  If any of the following items are touching or near key head, signal communication between key and vehicle is negatively affected, resulting in engine not starting.

―  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 card with magnetic strips

•  No transponder in the key

•  Transponder malfunction (Key ID number is not output)

•  Coil antenna malfunction

•  Instrument cluster malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1

VERIFY DTC

•  Is B1600/P1260 displayed?

Yes

Go to Step 3.

No

Go to the next step.

2

VERIFY DTC

•  Is B2431/P1260 displayed?

Yes

Perform the DTC inspection for “SECURITY LIGHT: 13, M-MDS: B2431/P1260”.

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

No

Go to the next step.

3

VERIFY WHETHER KEY IS VALID OR NOT

•  Are there any keys with which the engine can be started, other than the key that is a cause of the displayed DTC?

Yes

Go to Step 5.

No

Go to the next step.

4

VERIFY WHETHER MALFUNCTION IS IN KEY OR COIL ANTENNA

•  Using the M-MDS, register an additional key.
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

•  Using the registered key, turn the ignition switch to the ON position.

•  Verify the DTC using the M-MDS.

―  Is B1600/P1260 displayed again?

Yes

Replace the coil antenna, then go to Step 6.

(See COIL ANTENNA REMOVAL/INSTALLATION.)

No

•  Dispose of the malfunctioning key.

•  Register a new key if necessary.
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

5

VERIFY WHETHER MALFUNCTION IS IN KEY OR COIL ANTENNA

•  Using another valid key, turn the ignition switch to the ON position.

•  Verify the DTC Using the M-MDS.

―  Is B1600/P1260 displayed again?

Yes

Replace the coil antenna, then go to the next step.

(See COIL ANTENNA REMOVAL/INSTALLATION.)

No

•  Dispose of the malfunctioning key.

•  Register a new key if necessary.
(See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)

6

INSPECT INSTRUMENT CLUSTER

•  Using the registered key, turn the ignition switch to the ON position.

―  Is B1600/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.

STEP	INSPECTION		ACTION
1	VERIFY DTC • Is B1600/P1260 displayed?	Yes	Go to Step 3.
1	VERIFY DTC • Is B1600/P1260 displayed?	No	Go to the next step.
2	VERIFY DTC • Is B2431/P1260 displayed?	Yes	Perform the DTC inspection for “SECURITY LIGHT: 13, M-MDS: B2431/P1260”. (See SECURITY LIGHT 13, DTC B2431/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)
2	VERIFY DTC • Is B2431/P1260 displayed?	No	Go to the next step.
3	VERIFY WHETHER KEY IS VALID OR NOT • Are there any keys with which the engine can be started, other than the key that is a cause of the displayed DTC?	Yes	Go to Step 5.
3		No	Go to the next step.
4	VERIFY WHETHER MALFUNCTION IS IN KEY OR COIL ANTENNA • Using the M-MDS, register an additional key. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) • Using the registered key, turn the ignition switch to the ON position. • Verify the DTC using the M-MDS. ― Is B1600/P1260 displayed again?	Yes	Replace the coil antenna, then go to Step 6. (See COIL ANTENNA REMOVAL/INSTALLATION.)
4		No	• Dispose of the malfunctioning key. • Register a new key if necessary. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
5	VERIFY WHETHER MALFUNCTION IS IN KEY OR COIL ANTENNA • Using another valid key, turn the ignition switch to the ON position. • Verify the DTC Using the M-MDS. ― Is B1600/P1260 displayed again?	Yes	Replace the coil antenna, then go to the next step. (See COIL ANTENNA REMOVAL/INSTALLATION.)
5		No	• Dispose of the malfunctioning key. • Register a new key if necessary. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.)
6	INSPECT INSTRUMENT CLUSTER • Using the registered key, turn the ignition switch to the ON position. ― Is B1600/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.)
6		No	DTC troubleshooting completed.