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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Electrical >> Body Electrical >> Plug-In Charging System >> Diagnostic Information and Procedures >> Plug-In Charging Indicator Malfunction >> Circuit/System Verification
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Circuit/System Verification

  1. Vehicle in Service Mode.
  2. Verify that DTC U135B is not set.
    • If DTC U135B is not set 
  3. Verify no other hybrid/EV battery-related DTCs are set.
    • If no hybrid/EV battery-related DTCs are set 
  4. Vehicle OFF. Ensure the charge cord is not connected to the vehicle.
  5. Verify the vehicle charge indicator is OFF.
    • If the vehicle charge indicator is not OFF 

      Refer to Circuit/System Testing.

    • If the vehicle charge indicator is OFF 
  6. Connect the charge cord.
  7. Verify the vehicle charge indicator is operating properly.
    1. Vehicle ON.
    2. Verify the Charge Cord Connected message is displayed in the instrument panel/message center.
      NOTE: Vehicle must be ON and not in Service Mode for message operation.
      • If the Charge Cord Connected message is displayed, refer to Circuit/System Testing.
      • If the Charge Cord Connected message is NOT displayed, refer to Plug-In Charging Malfunction .
    • If the vehicle charge indicator is operating properly 
  8. All OK.