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Home >> Chevrolet >> 2015 >> Impala Limited LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Cellular System, Entertainment System And Navigation System) >> Diagnostic Information and Procedures >> Auxiliary Audio Input Malfunction (with IO5/IO6) >> Circuit/System Testing >> USB Receptacle
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USB Receptacle

WARNING: This page is about a different car, the 2015 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the USB cable is properly connected at the X4 harness connector at the K74 Human Machine Interface Control Module.
    • If connection problems or cable damage is noted. 

      Perform the appropriate repair or replacement to correct any issues.

    • If no connection problems or cable damage is noted. 
  2. Disconnect the vehicle USB cable X4 harness connector at the K74 Human Machine Interface Control Module.
  3. Connect the EL-50334-2 Type-A Female to Mini-B Male Cable to the K74 Human Machine Interface Control Module.
  4. Ignition ON, infotainment system ON.
  5. Connect the EL-50334-20 Multimedia Interface Tester (MIT) to the EL-50334-2 Type-A Female to Mini-B Male Cable and select the USB test mode.
  6. Verify the audio from the EL-50334-20 Multimedia 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 

      Replace the K74 Human Machine Interface Control Module.

    • If audio is heard from the test tool 
  7. Replace the USB cable assembly.
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