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Home >> Mazda >> 2020 >> CX-3 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> On-Board Diagnostic - Adaptive Front Lighting System Control Module >> DTC U3000-49: AFS Control Module Internal Malfunction (Adaptive Front Lighting System) >> Notes
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DTC U3000-49: AFS Control Module Internal Malfunction (Adaptive Front Lighting System): Notes

DTC U3000:49 (ADAPTIVE FRONT LIGHTING SYSTEM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location AFS control module internal malfunction
  • RAM/ROM malfunction
  • AFS function malfunction
  • CAN hardware malfunction
Detection condition
  • RAM/ROM malfunction
    • The AFS control module detected a malfunction in the internal RAM/ROM.
  • AFS function malfunction
    • The AFS control module detected AFS function malfunction three times.
  • CAN hardware malfunction
    • The AFS control module detected CAN hardware malfunction three times.
Fail-safe
  • RAM/ROM malfunction
    • The swivel actuator is moved to the center.
      • The headlight leveling actuator is stopped at the position when the malfunction is determined.
  • AFS function malfunction
    • Not applicable
  • CAN hardware malfunction
    • The swivel actuator is moved to the center.
      • The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause
  • AFS control module internal malfunction
System wiring diagram -
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