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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Auxiliary Audio Input Malfunction (IO5/IO6) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

Auxiliary Audio Input Jack

  1. Verify no DTCs are present.
    • Go to next step: If no DTCs are present 
  2. Ignition ON, infotainment system ON.
  3. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X83 Auxiliary Audio Input 3.5 mm (1/8 in.) input jack and select the AUX test mode.
  4. Verify that AUX becomes an available media selection to the infotainment system.
    • If AUX does not become an available media selection 

      Refer to Circuit/System Testing - Auxiliary Audio Input, USB Port and SD Card Reader.

    • Go to next step: If AUX becomes an available media selection 
  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.
    • If audio is not heard from the test tool. 

      Refer to Circuit/System Testing - Auxiliary Audio Input, USB Port and SD Card Reader.

    • Go to next step: If audio is heard from the test tool. 
  6. All OK

USB Ports and SD Card Reader

  1. Ignition ON, infotainment system ON.
  2. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X83 Auxiliary Audio Input USB port and select the USB test mode.
  3. 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.
    • If audio is not heard from the test tool 
    1. Insert an SD card with compatible media into the SD card slot.
    2. Verify the media on the SD card can be accessed while operating the system to connect to the SD card.
    • If the SD card reader cannot be accessed, refer to Circuit/System Testing - Auxiliary Audio Input, USB Port and SD Card Reader.
    • If the SD card reader can be accessed, replace the X83 Auxiliary Audio Input.
    • Go to next step: If audio is heard from the test tool 
  4. Insert an SD card with compatible media into the SD card slot.
  5. Verify the media on the SD card can be accessed while operating the system to connect to the SD card.
    • If the SD card reader media cannot be accessed 

      Refer to Circuit/System Testing - Auxiliary Audio Input, USB Port and SD Card Reader

    • Go to next step: If the SD card reader media can be accessed 
  6. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X92 USB Receptacle USB port and select the USB test mode.
  7. 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.
    • If audio is not heard from the test tool 

      Refer to Circuit/System Testing - Front Console USB Ports.

    • Go to next step: If audio is heard from the test tool 
  8. Connect the EL-50334-20 Multi-Media Interface Tester (MIT) to the X92A USB Receptacle - Instrument Panel Compartment (if equipped) and select the USB test mode.
  9. 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.
    • If audio is not heard from the test tool 

      Refer to Circuit/System Testing - Instrument Panel Compartment USB Port.

    • Go to next step: If audio is heard from the test tool 
  10. All OK.
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