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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic - Retractable Fastback Control Module >> DTC B1DA8-23: Incorrect Top Lock Position [Retractable Hardtop Control Module] >> Notes
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DTC B1DA8-23: Incorrect Top Lock Position [Retractable Hardtop Control Module]: Notes

DTC B1DA8:23 (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Incorrect top lock position
Detection condition
  • The retractable hardtop control module detects the top lock switch ON condition for 30 s when the roof position is at a position other than fully-closed.
Fail-safe
  • Stops retractable hardtop operation
  • Inhibits the open retractable hardtop operation.
Possible cause
  • Short to ground in wiring harness between retractable hardtop control module terminal 1G and top lock switch terminal A
  • Top lock switch malfunction
  • Retractable hardtop control module malfunction
G13490346Courtesy of MAZDA MOTORS CORP.