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2008 - MX-5 - Body and Accessories

DTC B296C [POWER RETRACTABLE HARDTOP]



DTC B296C

Power retractable hardtop switch malfunction

DETECTION CONDITION

  • Power retractable hardtop switch signal is 1 V or less.

  • Power retractable hardtop switch is detected to be stuck in on.

POSSIBLE CAUSE

  • Open/close signals are input simultaneously for 30 s or more.

  • Power retractable hardtop switch malfunction

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

  • Power retractable hardtop control module malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

INSPECT THE POWER RETRACTABLE HARDTOP SWITCH
  • Turn the ignition switch to the LOCK position.

  • Disconnect the negative battery cable.

  • Inspect the power retractable hardtop switch. (See POWER RETRACTABLE HARDTOP SWITCH INSPECTION.)

  • Is the power retractable hardtop switch normal?

Yes

Go to the next step.

No

Replace the power retractable hardtop switch.

(See POWER RETRACTABLE HARDTOP SWITCH REMOVAL/INSTALLATION.)

2

INSPECT THE WIRING HARNESS BETWEEN POWER RETRACTABLE HARDTOP CONTROL MODULE AND POWER RETRACTABLE HARDTOP SWITCH
  • Disconnect the power retractable hardtop switch connector.

  • Inspect the wiring harness between power retractable hardtop control module connector terminal 1H and power retractable hardtop switch connector terminal F 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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