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Home >> Mazda >> 2023 >> MX-5 Miata RF Club >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic - Retractable Fastback Control Module >> DTC B1DA4-29: Incorrect Front Roof Position [Retractable Hardtop Control Module] >> Notes

DTC B1DA4-29: Incorrect Front Roof Position [Retractable Hardtop Control Module]: Notes

DTC B1DA4:29 (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Incorrect front roof position
Detection condition
  • The retractable hardtop control module detects an incorrect front roof position.
Fail-safe
  • Stops retractable hardtop operation
Possible cause
  • Short to ground in wiring harness between the following terminals:
    • Retractable hardtop control module terminal 4B and front roof link limit switch terminal A
    • Retractable hardtop control module terminal 4C and front roof link limit switch terminal B
  • Front roof link limit switch malfunction
  • Retractable hardtop control module malfunction
G15747578Courtesy of MAZDA MOTORS CORP.