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Home >> Buick >> 2016 >> Cascada Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Auxiliary Audio Input Malfunction (Without SD Card Reader) >> Circuit/System Testing >> USB Port
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USB Port

WARNING: This page is about a different car, the 2016 Chevrolet Malibu Limited. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the USB cable connection at the A11 Radio.
  2. Connect the EL-50334-1  Type A male to Mini A male USB Cable to the A11 Radio. Connect the EL-50334-3  Type A female to Type A female adapter to the EL-50334-1  Cable.
    NOTE: USB cables and adapters for the following tests are found in the EL-50334-50  USB Cable and Adapter Kit.
  3. Ignition ON, radio ON, connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the EL-50334-3  adapter.
  4. Verify the infotainment system switches to USB as the audio source.
    • If the infotainment system does not switch to USB as the audio source 

      Replace the A11 Radio.

    • If the infotainment system switches to USB as the audio source 
  5. Ignition OFF, connect the vehicle USB cable to the A11 Radio. Disconnect the I/P to floor console inline USB cable connector.
  6. Ignition ON, radio ON, connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the I/P side of the inline USB cable connector.
    NOTE: The EL-50334-3  or EL-50334-4  adapter may be required for the following test.
  7. Verify the infotainment system switches to USB as the audio source.
    • If the infotainment system does not switch to USB as the audio source 

      Replace the I/P USB cable assembly.

    • If the infotainment system switches to USB as the audio source 
  8. Ignition OFF, connect the I/P to floor console inline USB cable connector.
  9. Disconnect the USB cable at the X83 Auxiliary Audio Input. Connect the EL-50334-4 Type A female to Mini B female adapter to the USB cable.
  10. Ignition ON, radio ON, connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the EL-50334-4 adapter.
  11. Verify the infotainment system switches to USB as the audio source.
    • If the infotainment system does not switch to USB as the audio source 

      Replace the console USB cable assembly.

    • If the infotainment system switches to USB as the audio source 
  12. Test or replace the X83 Auxiliary Audio Input.