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Home >> Cadillac >> 2017 >> CT6 Plug-In >> Repair and Diagnosis >> Electrical >> Body Electrical >> Hybrid/EV System Controls >> Diagnostic Information and Procedures >> DTC P06AF: Torque Management System Performance - Forced Engine Shutdown >> Circuit/System Testing
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Circuit/System Testing

  1. Vehicle OFF.
    NOTE: Perform Circuit/System Verification before Circuit/System Testing.
  2. Disconnect the X1 harness connector at the T6 Power Inverter Module and disconnect the X1 harness at the K20 ECM.
  3. Test for less than 2 Ω on the serial data circuits listed below end to end.
    • T6 Power Inverter Module X1 connector terminal 1 to K20 ECM X1 connector terminal 6
    • T6 Power Inverter Module X1 connector terminal 2 to K20 ECM X1 connector terminal 7
    • If 2 Ω or greater 

      Repair the open/high resistance in the circuit.

    • If less than 2 Ω 
  4. Replace the K20 ECM.
  5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Replace the T6 Power Inverter Module.

    • If the DTC does not set 
  7. All OK
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