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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 U200B-16: Hall Effect Switch Power Supply Malfunction [Retractable Hardtop Control Module] >> Notes
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DTC U200B-16: Hall Effect Switch Power Supply Malfunction [Retractable Hardtop Control Module]: Notes

DTC U200B:16 (RETRACTABLE HARDTOP CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Hall effect switch power supply malfunction
Detection condition
  • The retractable hardtop control module detects Hall effect switch power supply voltage of less than 4 V.
Fail-safe
  • Stops retractable hardtop operation
Possible cause
  • Short to ground in wiring harness between the following terminals:
    • Retractable hardtop control module terminal 4O and front roof link motor (RH) terminal B
    • Retractable hardtop control module terminal 4S and front roof link motor (LH) terminal B
  • Short to ground in wiring harness between the following terminals:
    • Retractable hardtop control module terminal 4O and rear roof link motor (RH) terminal D
    • Retractable hardtop control module terminal 4S and rear roof link motor (LH) terminal D
  • Short to ground in wiring harness between retractable hardtop control module terminal 4W and top lock motor terminal D
  • Retractable hardtop control module malfunction
G13490353Courtesy of MAZDA MOTORS CORP.