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Home >> Buick >> 2018 >> Enclave Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Auxiliary Audio Input Malfunction >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia Limited, 2017 Chevrolet Traverse, and 2017 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Auxiliary Audio Input Jack - Console

  1. Verify no DTCs are present.
    • If no DTCs are present 
  2. Ignition ON, radio ON.
  3. Verify the infotainment system switches to AUX as the audio source with the EL-50334-20  Multi-Media Interface Tester (MIT) connected to the auxiliary audio input jack.
    • If the infotainment system does not switch to AUX as the audio source 

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

    • If the infotainment system switches to AUX as the audio source 
  4. Verify the audio from the EL-50334-20  Multi-Media Interface Tester (MIT) is heard through the vehicle infotainment system while operating the test tool to begin audio playback.
    • 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 
  5. All OK.

Auxiliary Audio Input Jack - Radio (If Equipped)

  1. Verify no DTCs are present.
    • If no DTCs are present 
  2. Ignition ON, radio ON.
  3. Verify the infotainment system switches to AUX as the audio source with the EL-50334-20  Multi-Media Interface Tester (MIT) connected to the auxiliary audio input jack.
    • If the infotainment system does not switch to AUX as the audio source 

      Replace the A11 Radio.

    • If the infotainment system switches to AUX as the audio source 
  4. Verify the audio from the EL-50334-20  Multi-Media Interface Tester (MIT) is heard through the vehicle infotainment system while operating the test tool to begin audio playback.
    • If audio is not heard from the test tool 

      Replace the A11 Radio.

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

USB Port

  1. Verify no DTCs are present.
    • If no DTCs are present 
  2. Ignition ON, radio ON.
  3. Verify the infotainment system switches to USB as the audio source with the EL-50334-20  Multi-Media Interface Tester (MIT) connected to the USB port.
    • If the infotainment system does not switch to USB as the audio source 

      Refer to Circuit/System Testing - USB Port.

    • If the infotainment system switches to USB as the audio source 
  4. Verify the audio from the EL-50334-20  Multi-Media Interface Tester (MIT) is heard through the vehicle 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 Port.

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