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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Automatic Transmission - 6T40 (MH8 MHB) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0722, P0723, P077C, or P077D: Output Speed Sensor >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  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. Verify the scan tool Transmission OSS parameter changes with vehicle speed or does not drop out, while operating the vehicle at 16-32 km/h (10-20 mph).
    • If the Transmission OSS does not vary with vehicle speed or drops out 

      Refer to Circuit/System Testing.

    • If the Transmission OSS varies with vehicle speed and does not drop out 
  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.

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