Measure voltage between the No. 6 [No. 7] and No. 12 [No. 4] terminals by moving the shaft slowly.
[ ]:
Rear
Is there about 0.5−4.5 V?
YES
-
Intermittent failure, the system is OK at this time. Check for loose or poor connection between the headlight auto leveling control unit and the front (or rear) headlight leveling sensor, if OK, replace the front (or rear) headlight leveling sensor.■
NO
-
Check for an open or short in the wire between the headlight auto leveling control unit and the front (or rear) headlight leveling sensor, if OK, replace the front (or rear)
headlight leveling sensor
.■