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Check Vehicle Signals With Line Diag Mode

WARNING: This page is about a different car, the 2019 Subaru Ascent. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch to ACC.
  2. Press the button (b) twice with the button (a) pressed.
    G11246736Courtesy of SUBARU OF AMERICA, INC.
    NOTE: Pressing the button (a) for 3 seconds or more, or turning the ignition switch from the OFF to ACC position can exit the diagnostic mode.
  3. {Line Diag} screen is displayed.
  4. Check the signal status with the {Vehicle Signal} in the {Line Diag} screen.
    G12399551Courtesy of SUBARU OF AMERICA, INC.
    Item Contents Inspection
    ILL+ Illumination signal Turn the lighting switch to ON, and check that the display shows OK.
    SPEED Speed pulse signal Input the vehicle speed and check that it turns ON.
    PKB Parking brake signal Pull the parking brake switch, and check that the display shows ON.
    REV Reverse signal Place the select lever in reverse, and check that the display shows ON.
    IG IGN signal Check that the display shows ON.
    Batt Volt Battery voltage Check that the battery voltage is displayed.
    Steering Steering angle Check that the steering operation is reflected on the display.
    Bright Bright signal Turn the bright switch to ON, and check that the display shows ON.
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