Circuit/System Verification

Auxiliary Audio Input Jack

1. Verify no DTCs are present.
   • If any DTCs are present 

     Refer to Diagnostic Trouble Code (DTC) List - Vehicle .

   • If no DTCs are present 
2. Ignition ON, infotainment system ON.
3. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X83 Auxiliary Audio Input 3.5 mm (1/8 in.) input jack and select the AUX test mode.
4. Verify that AUX becomes an available media selection to the infotainment system.
   • If AUX does not become an available media selection 

     Refer to Circuit/System Testing - Auxiliary Audio Input Jack.

   • If AUX becomes an available media selection 
5. Verify the audio from the EL-50334-20 Multi-Media Interface Tester (MIT) is heard through the infotainment 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 - Auxiliary Audio Input Jack.

   • If audio is heard from the test tool. 
6. All OK

USB Ports and SD Card Reader

1. Ignition ON, infotainment system ON.
2. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X83 Auxiliary Audio Input USB port and select the USB test mode.
3. Verify the audio from the EL-50334-20 Multi-Media Interface Tester (MIT) is heard through the infotainment system while operating the system to play audio from the test tool.
   • If audio is not heard from the test tool 
   1. Insert an SD card with compatible media into the SD card slot.
   2. Verify the media on the SD card can be accessed while operating the system to connect to the SD card.
   • If the SD card reader cannot be accessed, refer to Circuit/System Testing - USB Port and SD Card Reader.
   • If the SD card reader can be accessed, replace the X83 Auxiliary Audio Input.
   • If audio is heard from the test tool 
4. Insert an SD card with compatible media into the SD card slot.
5. Verify the media on the SD card can be accessed while operating the system to connect to the SD card.
   • If the SD card reader media cannot be accessed 

     Refer to Circuit/System Testing - USB Port and SD Card Reader

   • If the SD card reader media can be accessed 
6. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X92 USB Receptacle and select the USB test mode.
7. Verify the audio from the EL-50334-20 Multi-Media Interface Tester (MIT) is heard through the infotainment 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 Receptacle.

   • If audio is heard from the test tool 
8. All OK.