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Home >> Chevrolet >> 2019 >> Bolt EV Premier >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Auxiliary Audio Input Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2018 Chevrolet Bolt EV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition/Vehicle & All vehicle systems - Off
  2. Disconnect the electrical connector: X83 Auxiliary Audio Input X1
  3. Test for less than 10 ohms between the test points: Ground circuit terminal 4 & Ground
    • If 10 ohms or greater 
    1. Test for less than 2 ohms between the test points: Ground circuit terminal 4 & The other end of the circuit
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
      • If less than 2 ohms - Repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 ohms 
  4. Verify a test lamp turns On between the test points: B+ circuit terminal 6 & Ground
    • If the test lamp does not turn On 
    1. Remove - Test Lamp
    2. Test for less than 2 ohms between the test points: B+ circuit terminal 6 & The other end of the circuit
      • If 2 ohms or greater - Repair the open/high resistance in the circuit.
    • Go to next step: If the test lamp turns On 
  5. Poor connections or damaged USB cables can cause intermittent or no operation of USB devices. Inspect connectors, terminals, and cables for damage and replace components as necessary. Ensure all USB inline connections and connections at components are fully seated and connector position retainers/locks are secure.
    • If you detect any damage, replace the component. 
    • Go to next step: Visible Damage = None 
  6. Disconnect - USB Cable @ A11 Radio & X83 Auxiliary Audio Input
  7. Connect the following: EL-50334-2 USB Type A Female to Type B Mini Male Adapter & EL-50334-14 Infotainment Test Cable Connect the tool between the test points: A11 Radio & X83 Auxiliary Audio Input
  8. Ignition - On/Vehicle - In Service Mode - Infotainment System State - ON
  9. Connect the special tool: EL-50334-20 Multi-Media Interface Tester - X83 Auxiliary Audio Input - Test Mode - USB
  10. Verify the component works as specified: EL-50334-20 Multi-Media Interface Tester = Audio Tone
    • If the component does not work as specified 
    1. Replace the component: X83 Auxiliary Audio Input Connect all electrical connectors.
    2. Connect the special tool: EL-50334-20 Multi-Media Interface Tester - X83 Auxiliary Audio Input - Test Mode - USB
    3. Verify the component works as specified: EL-50334-20 Multi-Media Interface Tester = Audio Tone
      • If the component does not work as specified - Replace the component: A11 Radio
      • Go to next step: If the component works as specified
    4. All OK.
    • Go to next step: If the component works as specified 
  11. Replace the component: USB Cable
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