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Home >> Mazda >> 2017 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (On-Board Diagnostic (Adaptive Front Lighting System (AFS) Control Module)) >> DTC B1044-01: Auto Leveling SNESOR Circuit Malfunction >> Notes
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DTC B1044-01: Auto Leveling SNESOR Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
Description Auto leveling sensor circuit malfunction
Detection condition 
  • Adaptive front lighting system (AFS) control module detected the auto leveling sensor circuit voltage of 0.25 V or less  or 4.75 V or more  for 10 s or more  with the ignition switched ON (engine off or on).
Fail-safe 
  • The swivel actuator is moved to the center.
  • The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause 
  • Auto leveling sensor connector or terminal malfunction
  • Adaptive front lighting system (AFS) control module connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • Adaptive front lighting system (AFS) control module terminal I- Auto leveling sensor terminal C
    • Adaptive front lighting system (AFS) control module terminal K- Auto leveling sensor terminal B
    • Adaptive front lighting system (AFS) control module terminal C- Auto leveling sensor terminal A
  • Short to power supply in wiring harness between the following terminals:
    • Adaptive front lighting system (AFS) control module terminal I- Auto leveling sensor terminal C
    • Adaptive front lighting system (AFS) control module terminal K- Auto leveling sensor terminal B
    • Adaptive front lighting system (AFS) control module terminal C- Auto leveling sensor terminal A
  • Open circuit in wiring harness between the following terminals:
    • Adaptive front lighting system (AFS) control module terminal I- Auto leveling sensor terminal C
    • Adaptive front lighting system (AFS) control module terminal K- Auto leveling sensor terminal B
    • Adaptive front lighting system (AFS) control module terminal C- Auto leveling sensor terminal A
  • Auto leveling sensor malfunction
  • Adaptive front lighting system (AFS) control module malfunction
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