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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Automatic Transmission - 6T50 (M2D) - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P171A, P171B, Or P171C: Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Engine - Running @ Idle
  2. Transmission - Park
  3. Perform the scan tool control function: Autostart/Autostop - On and Off

    Verify the scan tool parameter:

    • Transmission Accumulator Solenoid Valve Control Circuit High Voltage Test Status = OK or Not Run
    • Transmission Accumulator Solenoid Valve Control Circuit Low Voltage Test Status = OK or Not Run
    • Transmission Accumulator Solenoid Valve Control Circuit Open Test Status = OK or Not Run
    • If Not the specified state 

      Refer to Circuit/System Testing.

    • Go to next step: If the specified state 
  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.
  5. 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 
  6. All OK.
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