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Home >> Chevrolet >> 2018 >> Silverado 1500 SSV, 4WD, Part Time T/Case Control, Gas >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Controls System >> Diagnostic Information And Procedures >> DTC P06AF: Torque Management System Performance - Forced Engine Shutdown >> Circuit/System Testing

Circuit/System Testing

  1. Verify that ECM DTC P0606 is not set.
    • Go to next step: If the DTC is not set 
  2. Ignition Off, Disconnect the component: K59 Starter/Generator Control Module X1 connector and the K20 ECM X1 connector.
  3. Using the data communication schematic as a guide, test for less than 1 Ω between the serial data circuits listed below:
    • K59 Starter/Generator Control Module X1 connector terminal and K20 ECM X1 connector terminal for circuit 2500
    • K59 Starter/Generator Control Module X1 connector terminal and K20 ECM X1 connector terminal for circuit 2501
    • If greater than the specified range 

      Test the serial data circuit for an open/high resistance condition. If the circuit tests normal, replace the K20 ECM.

    • Go to next step: If in the specified range 
  4. Verify DTC P06AF is not set.
    • If the DTC is set 
    1. Verify the K59 Starter/Generator Control Module has the latest calibration in Calibration Information.
      • If the K59 Starter/Generator Control Module does not have the latest calibration
      1. Program the control module: K59 Starter/Generator Control Module.
      2. Verify the DTC does not set.
        • If the DTC sets, Replace the component: K59 Starter/Generator Control Module
        • If the DTC does not set
      3. All OK.
      • If the K59 Starter/Generator Control Module has the latest calibration
    2. Replace the component: K59 Starter/Generator Control Module.
    • Go to next step: If the DTC is not set 
  5. All OK.
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