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Circuit/System Testing

Auxiliary Audio Input Jack

  1. Ignition OFF, disconnect the X1 harness connector at the X83 Auxiliary Audio Input. Ignition ON, radio ON.
  2. Test for 2.5 - 3.5 V between the signal circuit terminal 5 and ground.
    • If less than 2.5 V 
    1. Ignition OFF, disconnect the X1 harness connector at the A11 Radio.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the signal circuit end to end
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the A11 Radio.
    • If greater than 3.5 V 
    1. Ignition OFF, disconnect the X1 harness connector at the A11 Radio, ignition ON.
    2. Test for less than 1 V between the detection circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the A11 Radio.
    • If between 2.5 - 3.5 V 
  3. Test for less than 1 V between the signal circuits listed below and ground:
    • Left auxiliary audio signal circuit terminal 1
    • Right auxiliary audio signal circuit terminal 2
    • Auxiliary audio common signal circuit terminal 3
    • If 1 V or greater 
    1. Ignition OFF, disconnect the X1 harness connector at the A11 Radio. Ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the A11 Radio.
    • If less than 1 V 
  4. Ignition OFF, disconnect the X1 harness connector at the A11 Radio.
  5. Test for infinite resistance between the signal circuits listed below and ground:
    • Auxiliary audio common signal circuit terminal 23
    • Left auxiliary audio signal circuit terminal 24
    • Right auxiliary audio signal circuit terminal 10
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  6. Test for less than 5 Ω between the signal circuit terminals listed below:
    • A11 Radio terminal 24 X1 and the X83 Auxiliary Audio Input terminal 1 X1
    • A11 Radio terminal 10 X1 and the X83 Auxiliary Audio Input terminal 2 X1
    • A11 Radio terminal 23 X1 and the X83 Auxiliary Audio Input terminal 3 X1
    • If 5 Ω greater 

      Repair the open/high resistance in the circuit.

    • If less than 5 Ω 
  7. Replace the X83 Auxiliary Audio Input. Connect all harness connectors.
  8. Connect and operate the EL-50334-20  Multi-Media Interface Tester (MIT).
  9. Verify the audio from the test tool is heard through the vehicle infotainment system.
    • If audio is not heard from the test tool 

      Replace the A11 Radio.

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

USB Port

  1. Ignition OFF, disconnect the USB cable connection at the A11 Radio.
    2. NOTE:

    USB cables and adapters for the following tests are found in the EL-50334-50  USB Cable and Adapter Kit.

  2. Connect the EL-50334-1 Type A male to Mini A male USB Cable to the A11 Radio. Connect the EL-50334-3 Type A female to Type A female adapter to the EL-50334-1 Cable.
  3. Ignition ON, radio ON, connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the EL-50334-3 adapter.
  4. Verify the infotainment system switches to USB as the audio source.
    • If the infotainment system does not switch to USB as the audio source 

      Replace the A11 Radio.

    • If the infotainment system switches to USB as the audio source 
  5. Ignition OFF, connect the vehicle USB cable to the A11 Radio. Disconnect the I/P to floor console inline USB cable connector.
    6. NOTE:

    The EL-50334-3 or EL-50334-4 adapter may be required for the following test.

  6. Ignition ON, radio ON, connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the I/P side of the inline USB cable connector.
  7. Verify the infotainment system switches to USB as the audio source.
    • If the infotainment system does not switch to USB as the audio source 

      Replace the I/P USB cable assembly.

    • If the infotainment system switches to USB as the audio source 
  8. Ignition OFF, connect the I/P to floor console inline USB cable connector.
  9. Disconnect the USB cable at the X83 Auxiliary Audio Input. Connect the EL-50334-4 Type A female to Mini B female adapter to the USB cable.
  10. Ignition ON, radio ON, connect the EL-50334-20  Multi-Media Interface Tester (MIT) to the EL-50334-4 adapter.
  11. Verify the infotainment system switches to USB as the audio source.
    • If the infotainment system does not switch to USB as the audio source 

      Replace the console USB cable assembly.

    • If the infotainment system switches to USB as the audio source 
  12. Test or replace the X83 Auxiliary Audio Input.
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