Inspection Of Switch Unit: Notes

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.

MANUAL WIPER

Operate the switches to check the continuity between terminals.

Preparation tool:

Circuit tester

Courtesy of SUBARU OF AMERICA, INC.

Front

Switch position	Terminal No.	Standard
OFF	B3 - B1	Less than 1 Ω
OFF	B2 - B1	1 MΩ or more
MIST	B2 - B3	Less than 1 Ω
LO	B2 - B3	Less than 1 Ω
HI	B2 - B4	Less than 1 Ω
Washer ON	A3 - A2	Less than 1 Ω

Rear

Switch position	Terminal No.	Standard
Washer ON (wiper interlock operation)	A7 - A2 B5 - A2	Less than 1 Ω
OFF	A7 - A2 A6 - A2 B5 - A2	1 MΩ or more
LO	A6 - A2	Less than 1 Ω
HI	A7 - A2	Less than 1 Ω
Washer ON	B5 - A2	Less than 1 Ω

Replace the switch if the inspection result is not within the standard value.
Install the switch assembly combination wiper select. Ref. to WIPER AND WASHER SYSTEMS>Combination Switch (Wiper)>INSTALLATION