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HOMESERVICE MANUALSCHEVROLET2019TRAX PREMIER, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 120 (POWER OUTLETS)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER OUTLET RECEPTACLE MALFUNCTION (110V)CIRCUIT/SYSTEM TESTING
2019 Chevrolet Trax Premier, AWD

Circuit/System Testing

2019 Chevrolet Trax Premier, AWDSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2018 Chevrolet Trax and 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

To help avoid personal injury, always treat the accessory power receptacle, accessory DC/AC power inverter module, AC circuit wires, and connectors as if AC high-voltage is present.

  1. Ignition OFF, scan tool disconnected, ignition key removed. Wait for 2 min. Nothing plugged into the X81 Accessory Power Receptacle - 110V AC, disconnect the harness connector at the T6 Power Inverter Module.
  2. Test for less than 10 Ω between the ground circuit terminal 11 and ground.
    • If greater than 10 Ω 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • Go to next step: If less than 10 Ω 
  3. Verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the B+ circuit end to end.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, verify the fuse is not open and there is voltage at the fuse.
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the B+ circuit terminal 6 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the T6 Power Inverter Module.
    • Go to next step: If the test lamp illuminates 
  4. Test for less than 1 V between the signal circuit terminal 12 and ground.
    • If greater than 1 V 

      Repair the short to voltage in the signal circuit.

    • Go to next step: If less than 1 V 
  5. Test for infinite resistance between the signal circuit terminal 12 and ground.
    • If less than infinite resistance 

      Repair the short to ground in the signal circuit.

    • Go to next step: If infinite resistance 
  6. Test for less than 1 V between the AC circuit terminals listed below and ground.
    • AC Terminal 2
    • AC Terminal 7
    • If greater than 1 V 

      Repair the short to voltage in the AC circuit.

    • Go to next step: If less than 1 V 
  7. Test for infinite resistance between the AC circuit terminals listed below and ground:
    • AC Terminal 2
    • AC Terminal 7
    • If less than infinite resistance 

      Repair the short to ground in the AC circuit.

    • Go to next step: If infinite resistance 
  8. Disconnect X1 and X2 harness connectors at the X81 Accessory Power Receptacle - 110V AC.
  9. Test for less than 2 Ω between the AC circuit terminals listed below:
    • X81 Accessory Power Receptacle - 110V AC terminal 3 X1 and the T6 Power Inverter Module terminal 2.
    • X81 Accessory Power Receptacle - 110V AC terminal 3 X2 and the T6 Power Inverter Module terminal 7.
    • If greater than 2 Ω 

      Repair the open/high resistance in the AC circuit.

    • Go to next step: If less than 2 Ω 
  10. Ignition ON.
  11. Verify that a test lamp illuminates between the ignition voltage circuit terminal 1 X1 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ignition circuit end to end.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, refer to Power Mode Mismatch .
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the ignition voltage circuit terminal 1 X1 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the T6 Power Inverter Module.
    • Go to next step: If the test lamp illuminates 
  12. Ignition OFF, connect all harness connectors at the X81 Accessory Power Receptacle - 110V AC. Connect a 110 V extension cord without a connected device to the X81 Accessory Power Receptacle - 110V AC, ignition ON.
  13. Verify that a test lamp illuminates between the T6 Power Inverter Module signal circuit terminal 12 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the signal circuit end to end.
      • If greater than 2 Ω, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the X81 Accessory Power Receptacle - 110V AC.
    • Go to next step: If the test lamp illuminates 
  14. Test or replace the T6 Power Inverter Module.
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When to See a Mechanic

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

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.