Check Each Connection

Press << Audio >> key to display the Audio OFF screen.
Touch the screen in the order of (1) to (6) shown in the figure.

Fig 1: Screen Display - Audio OFF Screen
Courtesy of SUBARU OF AMERICA, INC.
The display will switch to the Dealer Diag Menu screen.

Fig 2: Screen Display - Dealer Diag Menu
Courtesy of SUBARU OF AMERICA, INC.

CHECK AUX
1. Touch {Connection Info.} on the << Dealer Diag Menu >> screen.
2. Check that "Connect" is displayed in AUX.
  Connect: Normal.
  
  NC: Abnormal. Check the signal line connection. If there are no problems, the unit could be faulty.
CHECK MICROPHONE
1. Touch {Connection Info.} on the << Dealer Diag Menu >> screen.
2. Check that "Connect" is displayed in MIC.
  Connect: Normal.
  
  NC: Abnormal. Check the signal line connection. If there are no problems, the unit could be faulty.