Inspection Of Switch Unit

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

Measure the resistance between connector terminals.

Courtesy of SUBARU OF AMERICA, INC.

Front switch

Terminal No.	Inspection conditions	Standard
B2 - B3	MIST	Less than 1 Ω
B2 - B4	MIST	Less than 1 MΩ
B1 - B3	OFF	Less than 1 Ω
B1 - B3	INT	Less than 1 Ω
B9 - B10	INT	Less than 1 Ω
B2 - B3	LO	Less than 1 Ω
B2 - B4	HI	Less than 1 Ω

Washer switch

Terminal No.	Inspection conditions	Standard
A2 - A3	ON	Less than 1 Ω

INT volume switch

Terminal No.	Inspection conditions	Standard
B7 - B8	P1	Less than 1 Ω
	P2	Approx. 2 kΩ
	P3	Approx. 4 kΩ
	P4	Approx. 6 kΩ

Replace the switch assembly combination wiper if the inspection result is not within the standard value.