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Home >> Chevrolet >> 2014 >> Spark EV >> Repair and Diagnosis >> Electrical >> Charging Systems >> Plug-In Charging >> Diagnostic Information and Procedures >> Plug-In Charging Indicator Malfunction >> Circuit/System Testing
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Circuit/System Testing

  1. Vehicle OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down. Disconnect the harness connector at the P36 battery state of charge indicator.
  2. Test for less than 10 Ω between the low reference terminal C and ground.
    • If 10 Ω or greater 

      Repair the open/high resistance in the circuit.

    1. Disconnect the X2 harness connector from K114B Hybrid/EV Powertrain Control Module 2
    2. Test for 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K114B Hybrid/EV Powertrain Control Module 2.
    • If less than 10 Ω 
    3. NOTE:

    If the drive motor battery charger cable is connected. The drive motor battery charger cable must be disconnected for more than 10 seconds before performing the next step.

  3. Connect a test lamp between the signal terminal A and ground.
  4. Verify the test lamp does not illuminate.
    • If the test lamp does illuminate 
    1. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
    2. Test for less than 1 V between the signal circuit terminal and ground.
      • If 1 V or greater, repair the short to voltage in the circuit.
      • If less than 1 V, replace the K114B Hybrid/EV Powertrain Control Module 2.
    • If the test lamp does not illuminate 
  5. Connect the drive motor battery charger cable.
  6. Verify that the test lamp illuminates in the first 5 seconds of connecting the drive motor battery charger cable.
    • If the test lamp does not illuminate 
    1. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
    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 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 K114B Hybrid/EV Powertrain Control Module 2.
    • If the test lamp does illuminate 
  7. Disconnect the drive motor battery charger cable for at least 10 seconds. Connect a test lamp between the signal terminal B and ground.
  8. Verify the test lamp does not illuminate.
    • If the test lamp does illuminate 
    1. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
    2. Test for less than 1 V between the signal circuit terminal and ground.
      • If 1 V or greater, repair the short to voltage in the circuit.
      • If less than 1 V, replace the K114B Hybrid/EV Powertrain Control Module 2.
    • If the test lamp does not illuminate 
  9. Connect the drive motor battery charger cable.
  10. Verify that the test lamp illuminates within 25 seconds of connecting the drive motor battery charger cable.
    • If the test lamp does not illuminate 
    1. Disconnect the X2 harness connector at the K114B Hybrid/EV Powertrain Control Module 2.
    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 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 K114B Hybrid/EV Powertrain Control Module 2.
    • If the test lamp does illuminate 
  11. Connect a test lamp between the signal terminal D and ground. Vehicle in Service Mode.
  12. Command the BCM Charge Complete Indicator ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON 
    1. Vehicle OFF, disconnect the X1 harness connector at the K9 Body Control Module.
    2. Test for less than 1 V between the control circuit terminal and ground.
      • If 1 V or greater, repair the short to voltage in the circuit.
      • If less than 1 V, replace the K9 Body Control Module.
    • If the test lamp is always OFF 
    1. Vehicle OFF, disconnect the X1 harness connector at the K9 Body Control Module.
    2. Test for infinite resistance between the control 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 the control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K9 Body Control Module.
    • The test lamp turns ON and OFF 
  13. Replace the P36 Battery State Of Charge Indicator.
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