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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0716, P0717, P07BF, or P07C0: Input Speed Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition On.
  2. Verify the scan tool 9V Reference 2 Circuit Status parameter does not display Malfunction.
    • If Malfunction is displayed 

      Refer to Circuit/System Testing.

    • If Malfunction is not displayed 
  3. Verify the ISS/OSS supply voltage parameter does not display Out of Range.
    • If Out of Range is displayed 

      Refer to Circuit/System Testing.

    • If Out of Range is not displayed 
  4. Engine idling in park position.
  5. Verify the scan tool Transmission Input Speed parameter varies with engine speed and does not drop out.
    • If the transmission input speed does not vary with engine speed or drops out 

      Refer to Circuit/System Testing.

    • If the transmission input speed does vary with engine speed and does not drop out 
  6. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observe from the Freeze Frame/Failure Records data.
  7. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

    • If the DTC does not set 
  8. All OK.
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