Home

< Previous   Next >

2008 - MX-5 - Body and Accessories

SECURITY LIGHT 23, DTC -/B2139/P1260 [IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)]



DTC

Security light flashing pattern

23

ID number data in the PCM and the instrument cluster do not match

M-MDS display

Keyless control module

-

Instrument cluster

B2139

PCM

P1260

POSSIBLE CAUSE

  • Necessary procedures were not performed using the M-MDS after replacing the PCM.

  • Instrument cluster malfunction

  • PCM 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

Go to the next step.

2

Yes

Go to the next step.

No

DTC troubleshooting completed.

3

Yes

No

DTC troubleshooting completed.

4

    VERIFY DTC
  • Is the DTC displayed again?

    • Security light: 23

    • M-MDS: -/B2139/P1260

Yes

No

DTC troubleshooting completed.




< Previous   Next >
Back to Top
© 2014 Mazda North American Operations, U.S.A.