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Switch Assembly

Using a circuit tester (set to "ohm"), check that there is continuity between terminals S and M, and between terminal S and ground. Also check to be sure there is no continuity between terminal M and B.

Resistance between switch assembly terminals: 

Terminals Standard
S - M 1 Ω or less
S - Ground 1 Ω or less
M - B 1 MΩ or more
Fig 1: Checking Continuity Between Terminals S And M
G10267429Courtesy of SUBARU OF AMERICA, INC.