DTC B10A3-87: Communication Error With Swivel Actuator (LH) (Adaptive Front Lighting System): Notes

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

System malfunction location	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: Without auto leveling sensor: AFS control module terminal R and front combination light (LH) terminal K AFS control module terminal P and front combination light (LH) terminal J With auto leveling sensor: AFS control module terminal AC and front combination light (LH) terminal K AFS control module terminal Y and front combination light (LH) terminal J Short to power supply in wiring harness between the following terminals: Without auto leveling sensor: AFS control module terminal R and front combination light (LH) terminal K AFS control module terminal P and front combination light (LH) terminal J With auto leveling sensor: AFS control module terminal AC and front combination light (LH) terminal K AFS control module terminal Y and front combination light (LH) terminal J Open circuit in wiring harness between the following terminals: Without auto leveling sensor: AFS control module terminal R and front combination light (LH) terminal K AFS control module terminal P and front combination light (LH) terminal J With auto leveling sensor: AFS control module terminal AC and front combination light (LH) terminal K AFS control module terminal Y and front combination light (LH) terminal J Swivel actuator (LH) malfunction AFS control module malfunction
Courtesy of MAZDA MOTORS CORP.