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Home >> Mazda >> 2021 >> 3 Select, 4D Hatchback, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Collision/Avoidance >> On-Board Diagnostic - Vehicle Control Module (2 Of 2) >> DTC U3000-49: Vehicle Control Module (VCM) Internal Malfunction [Vehicle Control Module (Us)] >> Outline
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DTC U3000-49: Vehicle Control Module (VCM) Internal Malfunction [Vehicle Control Module (Us)]: Outline

DTC U3000:49 [VEHICLE CONTROL MODULE (US)] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Vehicle control module (VCM) internal malfunction
Detection condition
  • The vehicle control module (VCM) detects any of the following malfunctions for 10 s.
    • Vehicle control module (VCM) internal malfunction
      • Power supply circuit malfunction
Fail-safe (See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause
  • Short to ground or open circuit in vehicle control module (VCM) power supply circuit
  • Open circuit in vehicle control module (VCM) ground circuit
  • Vehicle control module (VCM) malfunction (built into body control module (BCM))
G13718647Courtesy of MAZDA MOTORS CORP.