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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 360 (Automatic Transmission - 10L60 (MQA) Or 10L80 (MHU) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P27EB, P27ED, or P27EE >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

Apply the parking brake and block the drive wheels before performing this procedure in order to prevent bodily injury.

  1. Ignition - On / Vehicle - In Service Mode
  2. Transmission Range - P
  3. Verify the scan tool parameter: Transmission Range Control Valve Position Sensor = 0.6 to 1.0 V
    • If not between 0.6 and 1.0 V 

      Refer to: Circuit/System Testing

    • Go to next step: If between 0.6 and 1.0 V 
  4. Engine - Running
  5. Transmission Range - D
  6. Verify the scan tool parameter: Transmission Range Control Valve Position Sensor = 1.7 to 2.2 V
    • If not between 1.7 and 2.2 V 

      Refer to: Circuit/System Testing

    • Go to next step: If between 1.7 and 2.2 V 
  7. 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 is not set 
  8. All OK.