CHECK IGNITION POWER SUPPLY CIRCUIT.

1) Disconnect the headlight beam leveling ECM connector.

2) Turn the ignition switch to ON.

3) Measure the voltage between headlight beam leveling ECM and chassis ground.

Connector & terminal

(B383) No. 1 (+) — Chassis ground (−):

QUESTION

Is the voltage 10 V or more?

Yes No

Repair the open circuit harness between battery and headlight beam leveling ECM, and poor contact in connector.