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2008 - MX-5 - Body and Accessories

SECURITY LIGHT 14, DTC B1602/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]



SECURITY LIGHT: 14

The instrument cluster cannot read key ID number data normally.

DTC: B1602/P1260

DETECTION CONDITION

  • The instrument cluster cannot read key ID number data normally.

POSSIBLE CAUSE

  • Transponder (key) malfunction

  • Coil antenna malfunction

  • Instrument cluster malfunction

  • 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

Yes

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

(See COIL ANTENNA REMOVAL/INSTALLATION [KEYLESS ENTRY SYSTEM].)

No

2

    INSPECT INSTRUMENT CLUSTER
  • Using another registered key, turn the ignition switch to the ON position.

  • Is the DTC displayed again?

    • Security light: 14

    • M-MDS: B1602/P1260

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 COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM].)

No

DTC troubleshooting completed.




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