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2008 - MX-5 - Body and Accessories

NO. 4 POWER RETRACTABLE HARDTOP DOES NOT START TO CLOSE [POWER RETRACTABLE HARDTOP]



4

Power retractable hardtop does not start to close

DESCRIPTION

  • Power retractable hardtop does not start to close when the power retractable hardtop (close) switch is pressed

POSSIBLE CAUSE

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

    • Improper vehicle speed detected

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

  • Power retractable hardtop control module cannot detect the proper power retractable hardtop switch signal.

    • Power retractable hardtop (open) switch malfunction (stuck on)

    • Power retractable hardtop (close) switch malfunction (stuck off)

    • Open or short circuit in the wiring between the power retractable hardtop control module and the power retractable hardtop switch

  • Power retractable hardtop control module cannot detect proper deck panel and roof positions

    • Deck panel open position switch signal improper

      • Deck panel open position switch malfunction

      • Deck panel open position switch improper installation

      • Open or short circuit in the wiring harness

    • Deck panel close position switch signal improper

      • Deck panel close position switch malfunction

      • Deck panel close position switch improper installation

      • Open or short circuit in the wiring harness

    • Power retractable hardtop open position switch signal improper

      • Power retractable hardtop open position switch malfunction

      • Power retractable hardtop open position switch improper installation

      • Open or short circuit in the wiring harness

    • Power retractable hardtop close position switch signal improper

      • Power retractable hardtop close position switch malfunction

      • Power retractable hardtop close position switch improper installation

      • Open or short circuit in the wiring harness

  • Power retractable hardtop link mechanics malfunction

    • Excessive restriction or hesitation

  • Power retractable hardtop control module detects a system malfunction




STEP

INSPECTION

ACTION

1

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.

2*

INSPECT TO SEE WHETHER MALFUNCTION IS IN POWER RETRACTABLE HARDTOP (OPEN) SWITCH SIGNAL OR ELSEWHERE

Yes

Go to step 4.

No

Go to the next step.

3

INSPECT POWER RETRACTABLE HARDTOP (OPEN) SWITCH
  • Remove the power retractable hardtop switch.

  • Measure the resistance between power retractable hardtop switch component side connector terminals A and F without the power retractable hardtop (open) switch pressed.

  • Is the resistance 0.99—1.01 kΩ?

Yes

Replace the power retractable hardtop switch.

(See POWER RETRACTABLE HARDTOP SWITCH REMOVAL/INSTALLATION.)

No

Inspect and repair the wiring harness between power retractable hardtop control module terminal 1H and power retractable hardtop switch terminal F at wiring harness side connectors.

4

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

  • Verify the power retractable hardtop indicator light status.

  • Does the power retractable hardtop indicator light flash or illuminate?

Yes

    If the indicator light is flashing:
  • Go to the next step.

    If the indicator light is illuminated:
  • Go to step 6.

No

Go to step 7.

5

VERIFY THAT PRESENT MALFUNCTION DTC IS STORED

Yes

Go to the appropriate DTC inspection.

(See DTC TABLE [POWER RETRACTABLE HARDTOP].)

No

Go to symptom troubleshooting “No.2 POWER RETRACTABLE HARDTOP INDICATOR LIGHT IS FLASHING” procedure.

6*

INSPECT POWER RETRACTABLE HARDTOP LIMIT SWITCH
  • Connect the M-MDS to DLC-2.

  • Monitor the power retractable hardtop control module PID RHT_OP, RHT_CL, DECK_OP and DECK_CL using the M-MDS.

  • Do the monitoring values indicate the roof and deck panel positions properly?

Yes

Verify that the malfunction symptom appears without the roof and deck panel in the fully open position.

If the same symptom appears, replace the power retractable hardtop control module.

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

No

Inspect and repair the suspected position sensor.

(See POWER RETRACTABLE HARDTOP LIMIT SWITCH INSPECTION.)

(See DECK PANEL LIMIT SWITCH INSPECTION.)

7*

INSPECT TO SEE WHETHER MALFUNCTION IS IN POWER RETRACTABLE HARDTOP (CLOSE) SWITCH SIGNAL OR ELSEWHERE
  • Monitor the power retractable hardtop control module PID SW_CL using the M-MDS while the power retractable hardtop (close) switch is pressed.

  • Is the monitor value ON?

Yes

Go to step 9.

No

Go to the next step.

8

INSPECT POWER RETRACTABLE HARDTOP (CLOSE) SWITCH
  • Remove the power retractable hardtop switch.

  • Measure the resistance between the power retractable hardtop switch connector (component side) terminal A and F while the open is switch pressed.

  • Is the resistance 2.18—2.22 kΩ?

Yes

Inspect and repair the wiring harness between power retractable hardtop control module terminal 1H and power retractable hardtop switch terminal F at wiring harness side connectors.

No

Replace the power retractable hardtop switch.

(See POWER RETRACTABLE HARDTOP SWITCH REMOVAL/INSTALLATION.)

9

INSPECT POWER RETRACTABLE HARDTOP LINK MECHANICS
  • Inspect the power retractable hardtop link mechanics.

  • Is there any restriction or hesitation with power retractable hardtop operation?

Yes

Repair or replace malfunctioning part.

No

Replace the power retractable hardtop control module.

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




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