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2008 - MX-5 - Body and Accessories

NO.1 SECURITY LIGHT DISPLAY IS NOT NORMAL [IMMOBILIZER SYSTEM]



1

The security light display is not normal.

DESCRIPTION

  • The security light remains illuminated 2 min or more after the ignition switch is turned to the ON position.

  • The security does not illuminate when the ignition switch is turned to the ON position.

  • The security light remains illuminated while the ignition switch is at the LOCK position.

  • The security light does not flash or the flashing interval is abnormal while the ignition switch is at the LOCK position.

POSSIBLE CAUSE

  • Advanced keyless control module malfunction (with advanced keyless control system)

  • Instrument cluster malfunction

NOTE:

  • If the security light remains illuminated for approx. 1 min after the ignition switch is turned to the ON position and then displays a DTC, perform immobilizer system malfunction diagnosis according to that DTC. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS SYSTEM)].)(See DTC TABLE [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)].)

  • While performing immobilizer system security access using the M-MDS, the security light does not illuminate even if the ignition switch is turned to the ON position. Verify the illumination condition of the security light by disconnecting the DLC-2 to release security access.


Diagnostic Procedure

STEP

INSPECTION

ACTION

1

  • Turn the ignition switch to the ON position.

  • Verify that the other warning lights in the instrument cluster condition.

  • Do the warning lights illumination normal?

Yes

Go to the next step.

No

Inspect the power and GND circuit for the instrument cluster. If the circuits are normal, replace the instrument cluster.

(See INSTRUMENT CLUSTER INSPECTION.)

2

  • Turn the ignition switch to the ON position.

  • Verify that the security light illumination.

  • Does the security light remains illuminate above 2 min?

Yes

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

No

Go to the next step.

3

  • Turn the ignition switch to the ON position.

  • Verify that the security light illumination.

  • Does the security light remain illumination?

Yes

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

No

Go to the next step.

4

  • Turn the ignition switch to the LOCK position.

  • Verify that the security light is flashing.

  • Does the security light flash normally?

Yes

Go to the next step.

No

If the security light flashes with DTC patterns, perform the applicable DTC troubleshooting procedure.

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

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

If the security light does not flash, replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

5

  • Is the advanced keyless entry system equipped?

Yes

Go to the next step.

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

6

  • Disconnect the battery negative post.

  • Disconnect the advanced keyless control module connectors.

  • Connect the battery negative post.

  • Turn the ignition switch to the ON position.

  • Verify that the security light illumination.

  • Does the security light illuminate normally?

Yes

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

No

Replace the advanced keyless control module.

(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS SYSTEM].)




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