Switch Assembly

WARNING: This page is about a different car, the 2007 Subaru Outback and 2007 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

Return spring check
Make sure the plunger returns to its original position immediately after pressed-in then released.

Fig 1: Checking Return Spring
Courtesy of SUBARU OF AMERICA, INC.
Magnet switch continuity test
Be sure there is continuity between the terminals S and M, and between terminal S and ground. Use a circuit tester.

Also check to be sure there is no continuity between terminal M and B.

Terminal/Resistance:

S - M/1Ω or less

S - Ground/1 Ω or less

M - B/1 MΩ or more

Fig 2: Checking Continuity Between Terminals S And M, And Between Terminal S And Ground
Courtesy of SUBARU OF AMERICA, INC.