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Check Each Vehicle Signal

Turn the ignition switch to "ON" with audio unit OFF. Next, while pressing the station preset "1" button, press and hold the station preset buttons in order, from "4" to "6" (or "6" to "4"), keeping all four buttons pressed for 1.5 seconds.
NOTE: To exit the diagnostic mode, turn the ignition switch from ACC OFF to ON.
When «System Diagnostic Menu» is displayed, select {Confirmation/Adjustment} by SCROLL/TUNE dial, then press ENTER/SETTING key (SCROLL/TUNE dial).

Fig 1: Display - System Diagnostic Menu
Courtesy of SUBARU OF AMERICA, INC.
When «System.. > Confirmation/Adjustment» is displayed, select {Vehicle Signals} by SCROLL/TUNE dial, then press ENTER/SETTING key (SCROLL/TUNE dial).

Fig 2: Display - Confirmation/Adjustment Screen
Courtesy of SUBARU OF AMERICA, INC.

CHECK ILLUMINATION
When the light switch is turned ON, make sure that "ON" lights in ILL+ and then the screen becomes dim.

Fig 3: Display - Vehicle Signals (Checking Illumination)
Courtesy of SUBARU OF AMERICA, INC.

ON: Normal.

OFF: Abnormal. Check the signal line connector. If there are no problems, the unit could be faulty.
CHECK SPEED SENSOR
NOTE:
- Before starting inspections, check the safety around the vehicle.
- Lift up the vehicle as necessary.
- When the diagnostic trouble code is input in the VDCCM, perform the Clear Memory operation.
1. Move the vehicle slowly 2 to 3 meters (6.6 to 9.8 ft).
2. Check that "ON" is displayed in SPD.
  
  Fig 4: Display - Vehicle Signals (Checking Speed Sensor)
  Courtesy of SUBARU OF AMERICA, INC.
ON: Normal.

OFF: Abnormal. Check the signal line connector. If there are no problems, the unit could be faulty.
CHECK BACK SENSOR
1. Turn the parking brake switch to ON and depress the brake pedal, then put the gear in reverse.
2. Make sure that "ON" is displayed in REV.
  
  Fig 5: Display - Vehicle Signals (Checking Back Sensor)
  Courtesy of SUBARU OF AMERICA, INC.
ON: Normal.

OFF: Abnormal. Check the signal line connector. If there are no problems, the unit could be faulty.
CHECK VEHICLE SETTING
1. Check that "SDN" or "WGN" is displayed in BODY.
  
  Fig 6: Display - Vehicle Signals (Checking Vehicle Setting)
  Courtesy of SUBARU OF AMERICA, INC.
SDN: sedan model

WGN: OUTBACK model