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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 P171D: Transmission Accumulator System Performance >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Verify the condition does not exist: Incorrect fluid level or condition - Transmission - Refer to Transmission Fluid Level and Condition Check 
    • If a condition exists 

      Repair or replace as necessary.

    • Go to next step: If no condition exists 
  2. Ignition - On/Vehicle - In Service Mode
  3. Clear DTCs
  4. Road test the vehicle. Refer to: Road Test 
  5. Verify DTC P171D is not set.
    • If DTC P171D is set 

      Refer to Diagnostic Fault Information

    • Go to next step: If no DTC is set 
  6. 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 DTC P171D is not set.

    • If DTC P171D is set 

      Refer to Diagnostic Fault Information

    • Go to next step: If no DTC is set 
  7. All OK.
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