Circuit/System Verification

Verify no DTCs are present.
- If any DTCs are present
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If no DTCs are present
Ignition On/Vehicle in Service Mode. Rear seat entertainment system ON.
Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the rear seat entertainment system USB port and select the USB test mode.
Verify the audio from the EL-50334-20 Multi-Media Interface Tester (MIT) is heard through the rear seat entertainment system while operating the system to play audio from the test tool.
- If audio is not heard from the test tool
  Refer to Circuit/System Testing - USB/HDMI Port
- If audio is heard from the test tool
Connect a compatible device to the X82 Audio/Video Input Adapter HDMI port. Operate the rear seat entertainment system to connect to the HDMI port as the source.
Verify that audio and video from the device can be accessed while operating the device.
- If the audio or video from the device cannot be accessed
  Refer to Circuit/System Testing - USB/HDMI Port
- If the audio or video from the device can be accessed
Connect a wired headphone to the X82 Audio/Video Input Adapter headphone jack. Operate the rear seat entertainment system to connect an available audio source to the wired headphone jack.
Verify that audio from the source can be heard with the wired headphones, adjusting the rotary volume control as necessary.
- If the audio cannot be heard
  Refer to Circuit/System Testing - Wired Headphone Jack
- If the audio can be heard
Verify the wired headphone audio volume increases and decreases while operating the rotary volume control.
- If the wired headphone audio volume cannot be adjusted
  Test or replace the X82 Audio/Video Input Adapter
- If the wired headphone audio volume can be adjusted
All OK.