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2008 - MX-5 - Body and Accessories

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



DTC

Security light flashing pattern

16

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

M-MDS display

Keyless control module

-

Instrument cluster

U2510

PCM

P1260

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 U1900 or 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 [ADVANCED KEYLESS 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 [ADVANCED KEYLESS SYSTEM].)

No

DTC troubleshooting completed.




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