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HOMESERVICE MANUALSCHEVROLET2016EXPRESS 2500 BASE, VAN CARGO, 6.6L ENG VIN LREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESAUXILIARY AUDIO INPUT MALFUNCTIONCIRCUIT/SYSTEM VERIFICATION
2016 Chevrolet Express 2500 Base, Van Cargo, 6.6L Eng VIN L

Circuit/System Verification

2016 Chevrolet Express 2500 Base, Van Cargo, 6.6L Eng VIN LSECTION Circuit/System Verification

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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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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