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Home >> Subaru >> 2015 >> WRX STI >> Repair and Diagnosis >> Electrical >> Charging Systems >> Starting System & Charging System (STI) >> Starter >> Inspection >> Switch Assembly Operation
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Switch Assembly Operation

  1. Using a lead wire, connect the terminal S of switch assembly to positive terminal of battery, and starter body to ground terminal of battery. The pinion should be forced endwise on shaft.
    NOTE: With the pinion forced endwise on shaft, starter motor can sometimes rotate because current flows, through pull-in coil, to motor. This is not a problem.
  2. Disconnect the connector from terminal M. Then using a lead wire, connect the positive terminal of battery and terminal M, and ground terminal to starter body.

    In this test set up, the pinion should return to its original position even when it is pulled out with a screwdriver.

    Fig 1: Identifying Terminal S And M
    G10265715Courtesy of SUBARU OF AMERICA, INC.