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2008 - MX-5 - Body and Accessories

DTC B296B [POWER RETRACTABLE HARDTOP]



DTC B296B

Top lock switch malfunction

DETECTION CONDITION

  • Top lock switch is detected to be on while the power retractable hardtop is open.

POSSIBLE CAUSE

  • Foreign material caught in mechanism

  • Top lock switch malfunction

  • Wiring harness between top lock switch and power retractable hardtop control module


Diagnostic procedure

STEP

INSPECTION

ACTION

1

FOREIGN MATERIAL INSPECTION
  • Is there any foreign material which turns the switch on mechanically?

Yes

Go to the next step.

No

Remove foreign material.

2

INSPECT THE TOP LOCK SWITCH

Yes

Go to the next step.

No

Replace the striker.

(See CONVERTIBLE TOP DISASSEMBLY/ASSEMBLY.)

3

INSPECT THE WIRING HARNESS BETWEEN POWER RETRACTABLE HARDTOP CONTROL MODULE AND TOP LOCK SWITCH
  • Disconnect the top lock switch connector.

  • Inspect the wiring harness between power retractable hardtop control module terminal connector 1D and top lock switch connector terminal A for a short to ground.

  • Is the wiring harness normal?

Yes

Replace the power retractable hardtop control module.

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

No

Repair or replace the related wiring harness.




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