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2008 - MX-5 - Body and Accessories

NO. 1 POWER RETRACTABLE HARDTOP WARNING BUZZER SOUNDS CONTINUOUSLY [POWER RETRACTABLE HARDTOP]



1

Power retractable hardtop warning buzzer sounds continuously

DESCRIPTION

  • Power retractable hardtop warning buzzer sounding continuously while the vehicle is stopped.

POSSIBLE CAUSE

  • Power retractable hardtop control module sends an buzzer operation signal to the instrument cluster.

    • Power retractable hardtop control module malfunction

    • Power retractable hardtop control module cannot detect the power retractable hardtop permission condition signal.

      • Vehicle speed detected

      • Transmission position detected (except for transmission neutral (MT)/N or P position (AT) detected)

  • Power retractable hardtop control module detects a system malfunction

  • Instrument cluster malfunction (Buzzer sounds regardless of the instruction from the power retractable hardtop control module)




STEP

INSPECTION

ACTION

1

VERIFY THAT PRESENT DTC IS STORED
  • Stop the vehicle.

  • Shift to P or N position (AT)/neutral position (MT).

  • Turn the ignition switch to the ON position.

  • Verify that power retractable hardtop indicator light status.

  • Is the power retractable hardtop indicator light flashing?

Yes

Retrieve the DTC for the power retractable hardtop control module using the M-MDS.

If the DTC is displayed, perform the appropriate troubleshooting procedure.

Then go to the next step.

No

Go to the next step.

2

VERIFY THAT POWER RETRACTABLE HARDTOP INDICATOR LIGHT ILLUMINATES
  • Turn the ignition switch to ON position.

  • Verify the power retractable hardtop indicator light status.

  • Does the power retractable hardtop indicator light illuminate?

Yes

Fully open/close the roof and lock the top lock (if the roof is fully closed).

Verify the power retractable hardtop indicator light status again.

If the indicator light illuminates with the power retractable hardtop fully open, return to step 1.

If the indicator light illuminates with the power retractable hardtop fully closed, inspect the top lock switch.

If the indicator light does not illuminate go to the next step.

No

Go to the next step.

3

INSPECT TO SEE WHETHER MALFUNCTION IS IN OPERATION PERMISSION CONDITION SIGNAL OR ELSEWHERE

Yes

Go to the next step.

No

Inspect and repair the suspected signal related wiring harness and component.

4*

INSPECT TO SEE WHETHER MALFUNCTION IS IN INSTRUMENT CLUSTER (BUZZER) OR POWER RETRACTABLE HARDTOP CONTROL MODULE

Yes

Replace the power retractable hardtop control module.

(See POWER RETRACTABLE HARDTOP CONTROL MODULE REMOVAL/INSTALLATION.)

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

(See INSTRUMENT CLUSTER DISASSEMBLY/ASSEMBLY.)




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