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Home >> Mazda >> 2022 >> 3 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (On-Board Diagnostic - Adaptive Front Lighting System Control Module) >> DTC B10A3-87: Communication Error With Swivel Actuator (LH) 1 [Adaptive Front Lighting System (AFS) Control Module] >> Outline
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DTC B10A3-87: Communication Error With Swivel Actuator (LH) 1 [Adaptive Front Lighting System (AFS) Control Module]: Outline

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DTC B10A3:87 [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE] DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error with swivel actuator (LH) 1
Detection condition
  • The adaptive front lighting system (AFS) control module cannot receive the signal from the swivel actuator (LH).
Fail-safe
  • The swivel actuator (LH) is moved to the center or stopped at the position when the malfunction is determined.
  • The swivel actuator (RH) is moved to the center.
  • Control of the headlight auto leveling system is continued with the headlight leveling actuator positioned -0.65° from where the malfunction is determined.
Possible cause
  • Front combination light (LH) connector or terminal malfunction
  • Adaptive front lighting system (AFS) control module connector or terminal malfunction
  • Short to ground in swivel actuator (LH) LIN communication line
  • Short to power supply in swivel actuator (LH) LIN communication line
  • Open circuit in swivel actuator (LH) LIN communication line
  • Swivel actuator (LH) malfunction
  • Adaptive front lighting system (AFS) control module malfunction
G13718608Courtesy of MAZDA MOTORS CORP.