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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T70 - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0716 or P0717: Input Speed Sensor >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool ISS/OSS Supply Voltage parameter displays OK.
    • IF OK is not displayed 

      Refer to Circuit/System Testing.

    • If OK is displayed 
  3. Engine idling, transmission in Park, parking brake applied, and drive wheels chocked.
  4. Verify the scan tool Transmission ISS parameter changes or does not drop out while varying the engine speed.
    • If the Transmission ISS does not vary with engine speed or drops out 

      Refer to Circuit/System Testing.

    • If the Transmission ISS varies with engine speed and does not drop out 
  5. 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.
  6. Verify the DTC does not set.
    • If the DTC sets 

      Refer to Circuit/System Testing.

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