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DTC B10A3-87: Communication Error With Swivel Actuator (LH): Notes

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

Description Communication Error With Swivel Actuator (LH)
Detection condition
  • The AFS control module detected communication error with the swivel actuator (LH) for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe
  • The swivel actuator (LH) is stopped at the position when the malfunction is determined.
  • The swivel actuator (RH) is moved to the center, or the swivel actuators (LH) and (RH) are moved to the center.
  • Control of the headlight auto leveling system is continued with the headlight leveling actuator positioned -0.6° from where the malfunction is determined.
Possible cause
  • Front combination light (LH) connector or terminal malfunction
  • AFS control module connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • AFS control module terminal P and front combination light (LH) terminal J
      • AFS control module terminal R and front combination light (LH) terminal L
  • Short to power supply in wiring harness between the following terminals:
    • AFS control module terminal P and front combination light (LH) terminal J
      • AFS control module terminal R and front combination light (LH) terminal L
  • Open circuit in wiring harness between the following terminals:
    • AFS control module terminal P and front combination light (LH) terminal J
      • AFS control module terminal R and front combination light (LH) terminal L
  • Swivel actuator (LH) malfunction
  • AFS control module malfunction
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