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Home >> Chevrolet >> 2018 >> Equinox L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P189C: Transmission Range Command Message Performance >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition - On/Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following system/component: LIN Bus
    • Go to next step: If a related DTC is not set 
  3. 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 Circuit/System Testing.

    • Go to next step: If the DTC does not set 
  4. All OK.
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