Light Control Sensor: Inspection

WARNING: This page is about a different car, the 2021 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.

Connect the connector.
Turn the ignition switch to ON, and set the lighting switch to the AUTO position.

Measure the voltage between connector terminals.

Preparation tool:

Circuit tester

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Inspection conditions	Standard
2 (+) - 1 (-)	Measure the voltage when the area around the auto light sensor, which was dark, becomes bright.	Dark condition: Approx. 0.6 V or less
2 (+) - 1 (-)		Bright condition: Approx. 3 V or more

Replace the auto light sensor if the inspection result is not within the standard value.