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2008 - MX-5 - Body and Accessories

SECURITY LIGHT 16, DTC U2510/P1260 [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]



SECURITY LIGHT: 16

Communication error between the instrument cluster and the PCM (no response)

DTC: U2510/P1260

DETECTION CONDITION

Communication error between the instrument cluster and the PCM (no response)

POSSIBLE CAUSE

  • Malfunction in the wiring harness (CAN line) between the instrument cluster and the PCM

  • PCM malfunction

  • Instrument cluster malfunction


Diagnostic Procedure



STEP

INSPECTION

ACTION

1

    VERIFY DTC
  • Are either U0073, or both, displayed, by either the instrument cluster or the PCM, or both?

Yes

Perform troubleshooting according to the corresponding DTC inspection.

(See DTC U0073, U2516 [MULTIPLEX COMMUNICATION SYSTEM].)

No

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].)

Go to the next step.

2

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

  • Is the DTC displayed?

    • Security light: 16

    • M-MDS: U2510 /P1260

Yes

Replace the PCM and perform the resetting procedure for the immobilizer system when replacing the PCM.

(See PCM REMOVAL/INSTALLATION [LF].)

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

No

DTC troubleshooting completed.




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