CHECK HARNESS BETWEEN BATTERY — INDICATOR BULB — ECM.

1) Disconnect the connector of ECM.

2) Turn the ignition switch to ON.

3) Measure the voltage between indicator bulb and chassis ground.

Connector & terminal

(B383) No. 6 (+) — Chassis ground (−):

QUESTION

Is battery voltage detected?

Yes No

Replace the headlight beam leveling ECM.