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Home >> Chevrolet >> 2016 >> Spark LS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 (Cellular System, Entertainment System And Navigation System) >> Diagnostic Information and Procedures >> Auxiliary Audio Input Malfunction >> Circuit/System Testing >> Auxiliary Audio Input Jack
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Auxiliary Audio Input Jack

WARNING: This page is about a different car, the 2015 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  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 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 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 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
    • rRght 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  Multimedia 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.
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