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Home >> Mazda >> 2021 >> MX-5 Miata Club, Standard Trans >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic - Retractable Fastback Control Module >> DTC B1DA9-2B: Retractable Hardtop Switch Circuit Malfunction [Retractable Hardtop Control Module] >> Notes
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DTC B1DA9-2B: Retractable Hardtop Switch Circuit Malfunction [Retractable Hardtop Control Module]: Notes

DTC B1DA9:2B (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Retractable hardtop switch circuit malfunction
Detection condition
  • The retractable hardtop control module detects that the retractable hardtop switch is in the ON or OFF condition for 30 s.
Fail-safe
  • Stops retractable hardtop operation
Possible cause
  • Short to ground in wiring harness between retractable hardtop control module terminal 1J and indicator unit terminal I
  • Indicator unit malfunction
  • Retractable hardtop control module malfunction
G13490350Courtesy of MAZDA MOTORS CORP.