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.