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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (Automatic Transmission - 6T45 (MH7) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0658 or P0659 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On / Vehicle - In Service Mode
  2. Perform the scan tool control function: High Side Driver 1 - On and Off

    Verify the scan tool parameter:

    • High Side Driver 1 Circuit Low Voltage Test Status = OK or Not Run
    • High Side Driver 1 Circuit Open Test Status = OK or Not Run
    • High Side Driver 1 Circuit High Voltage Test Status = OK or Not Run
    • If not the specified state 

      Refer to:Component Testing

    • Go to next step: If the specified state 
  3. Perform the scan tool control function: High Side Driver 1 - On and Off

    Verify the scan tool parameter: High Side Driver 1 = On and Off

    • If the parameter state does not change 

      Refer to:Component Testing

    • Go to next step: If the parameter state changes 
  4. 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.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to:Component Testing

    • Go to next step: If the DTC is not set 
  5. All OK.
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