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2008 - MX-5 - Engine

DTC P1260 [LF]



DTC P1260

Immobilizer system problem

DETECTION CONDITION

  • The instrument cluster detects an immobilizer system malfunction.

    Diagnostic support note
  • This is a continuous monitor (Other).

  • The MIL does not illuminate.

  • PENDING CODE is available if the PCM detects the above malfunction condition.

  • FREEZE FRAME DATA is not available.

  • The DTC is stored in the PCM memory.

POSSIBLE CAUSE

  • Immobilizer system malfunction

  • PCM malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

VERIFY RELATED REPAIR INFORMATION AVAILABILITY
  • Verify related Service Bulletins and/or on-line repair information availability.

  • Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

  • If the vehicle is not repaired, go to the next step.

No

Go to the next step.

2

VERIFY STORED DTC IN INSTRUMENT CLUSTER

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)].)

(See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

No

Go to the next step.

3

VERIFY TROUBLESHOOTING OF DTC P1260 COMPLETED
  • Make sure to reconnect all disconnected connectors.

  • Clear the DTC from the PCM memory using the M-MDS.

  • Start the engine, or perform the KOEO self-test with M-MDS.

    (See KOEO/KOER SELF TEST [LF].)

  • Is the same DTC present?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [LF].)

No

Go to the next step.

4

VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [LF].)

No

DTC troubleshooting completed.




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