At Shift Control

Turn the ignition switch to ON.
Check that the select lever can not be moved from "P" range when brake pedal is not depressed.
Check that the select lever can be moved from "P" range when brake pedal is depressed.
Select the select lever to except "P" range.
Check that the ignition key can not be removed from ignition switch when ignition switch is turned to OFF.
Set the AT select lever to each gear position while checking that the demanded gear position is correctly attained.

Fig 1: Identifying AT Select Lever Gear Positions
Courtesy of SUBARU OF AMERICA, INC.

SELECTOR AND GEAR POSITIONS