CHECK HARNESS BETWEEN HEADLIGHT BEAM LEVELING ECM AND VEHICLE HEIGHT SENSOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from ECM.

3) Measure the continuity between headlight beam leveling ECM and vehicle height sensor.

Connector & terminal

•Front vehicle height sensor:

(B383) No. 22 — (B384) No. 1:
(B383) No. 20 — (B384) No. 2:
(B383) No. 13 — (B384) No. 3:

•Rear vehicle height sensor:

(B383) No. 21 — (R152) No. 1:
(B383) No. 19 — (R152) No. 2:
(B383) No. 12 — (R152) No. 3:

QUESTION
Is there continuity?
Yes	No
Replace the headlight beam leveling ECM.	Repair the open circuit or poor contact of the connector in harness between headlight beam leveling ECM and vehicle height sensor.