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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 11 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Phone Projection Malfunction (Apple CarPlay) >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no DTC's are present.
    • Go to next step: If no DTC's are present. 
  2. Verify the correct settings on the radio and the connected device that will allow Apple CarPlay functionality.
    • If the settings are not correct. 

      Refer to the vehicle and devices owner manual or manufacturers website for details on enabling CarPlay.

    • Go to next step: If the settings are correct. 
  3. Verify the software is up to date on the connected device, refer to the device's owner manual or manufacturers website.
    • If the connected device software is not up to date. 

      Recommend the customer update their device to the newest software version.

    • Go to next step: If the connected device software has the newest version. 
  4. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X83 Auxiliary Audio Input USB port and select USB test mode,
  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.
    • Go to next step: If audio is heard from the test tool. 
  6. Verify the radio detects the connected device when plugged in by noting a change in the Phone Projection/Apple CarPlay icon on the Home screen.
    • If the radio does not show a change in the Phone Projection/Apple CarPlay icon. 
    1. Verify the device's cable is recommended or approved by the device manufacture and there is no damage to the cable or terminals.
      • If the cable is not the correct part or damage is noted advise the customer.
      • Go to next step: If no issues with the cable
    2. Perform a device rest by holding both the Home and Power buttons on the device.
    3. Attempt to launch the application by pressing the Phone Projection/Apple CarPlay icon within the Home screen.
      • If the application does not launch
    4. Perform the 3 vehicle Factory Resets located in Setting>System>Return to Factory Settings.
    • Go to next step: If the radio does show a change in the Phone Projection/Apple CarPlay icon. 
  7. Attempt to launch the application by pressing the Phone Projection/Apple CarPlay icon within the Home screen.
    • If the application does not launch 
    1. Perform the 3 vehicle Factory Resets located in Setting>System>Return to Factory Settings.
    • Go to next step: If the application does launch 

      Go to next step: All OK.

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