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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Power Outlets >> Diagnostic Information and Procedures >> Power Outlet Receptacle Malfunction (110 Volt) >> Circuit/System Testing

Circuit/System Testing

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 2min. Nothing plugged into the X81 Accessory Power Receptacle - 110V AC, disconnect the harness connector at the T1 Accessory DC/AC Power Inverter Module.
  2. Test for less than 10Ω between the ground circuit terminal 11 and ground.
    • If greater than 10Ω 
    1. Ignition OFF.
    2. Test for less than 2Ω in the ground circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, repair the open/high resistance in the ground connection.
    • If less than 10Ω 
  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 2Ω in the B+ circuit end to end.
      • If greater than 2Ω, repair the open/high resistance in the circuit.
      • If less than 2Ω, 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 T1 Accessory DC/AC Power Inverter Module.
    • If the test lamp illuminates 
  4. Test for less than 1V between the signal circuit terminal 12 and ground.
    • If greater than 1V 

      Repair the short to voltage in the signal circuit.

    • If less than 1V 
  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.

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

      Repair the short to voltage in the AC circuit.

    • If less than 1V 
  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.

    • If infinite resistance 
  8. Disconnect X1 and X2 harness connectors at the X81 Accessory Power Receptacle - 110V.
  9. Test for less than 2Ω between the AC circuit terminals listed below:
    • X81 Accessory Power Receptacle - 110V AC terminal 3 X1 and the T1 Accessory DC/AC Power Inverter Module terminal 2.
    • X81 Accessory Power Receptacle - 110V AC terminal 3 X2 and the T1 Accessory DC/AC Power Inverter Module terminal 7.
    • If greater than 2Ω 

      Repair the open/high resistance in the AC circuit.

    • If less than 2Ω 
  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 
    1. Ignition OFF, disconnect the X4 harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the control circuit terminal 12 X4 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2Ω in the control circuit end to end.
      • If 2Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2Ω, replace the K9 Body Control Module.
    • If the test lamp illuminates 
  12. Ignition OFF, connect all harness connectors at the X81 Accessory Power Receptacle - 110V AC. Connect a 110V 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 T1 Accessory DC/AC Power Inverter Module signal circuit terminal 12 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF.
    2. Test for less than 2Ω in the signal circuit end to end.
      • If greater than 2Ω, repair the open/high resistance in the circuit.
      • If less than 2Ω, replace the X81 Accessory Power Receptacle - 110V AC.
    • If the test lamp illuminates 
  14. Test or replace the T1 Accessory DC/AC Power Inverter Module.
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