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Home >> Kia >> 2015 >> Forte EX >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis - 2.0L >> DTC P0721: Output Speed Sensor Circuit Range/Performance >> DTC Inspection >> Monitor GDS Data

Monitor GDS Data

  1. Connect GDS to Data Link Connector (DLC).
  2. Ignition "ON" & Engine "ON".
  3. Select "Current Data"  mode and monitor "Input Speed (PG-A)", "Output Speed (PG-B)", Shift Lever Switch", "Current Gear", "Engine RPM", "Vehicle Speed" parameter.
  4. Driving above 20 Km/h (12.4mi/h).

    Specification:  Increasing Gradually

    Fig 1: Current Data And Signal Waveform For "P, N" Range
    G09749727Courtesy of KIA MOTORS AMERICA, INC.
    Fig 2: Current Data And Signal Waveform For "R" Range
    G09749728Courtesy of KIA MOTORS AMERICA, INC.
    Fig 3: Current Data And Signal Waveform For "D" Range 1st Gear
    G09749729Courtesy of KIA MOTORS AMERICA, INC.
    Fig 4: Current Data And Signal Waveform For "D Range 1st Gear, Vehicle Speed
    G09749730Courtesy of KIA MOTORS AMERICA, INC.
    Fig 5: Current Data And Signal Waveform For "D" Range 2nd Gear
    G09749731Courtesy of KIA MOTORS AMERICA, INC.
    Fig 6: Current Data And Signal Waveform For "D" Range 3rd Gear
    G09749732Courtesy of KIA MOTORS AMERICA, INC.
    Fig 7: Current Data And Signal Waveform For "D" Range 4th Gear
    G09749733Courtesy of KIA MOTORS AMERICA, INC.
    Fig 8: Current Data And Signal Waveform For "D" Range 5th Gear
    G09749734Courtesy of KIA MOTORS AMERICA, INC.
    Fig 9: Current Data And Signal Waveform For "D" Range 6th Gear
    G09749735Courtesy of KIA MOTORS AMERICA, INC.
  5. Is measured "Output speed sensor" value within specification?

    YES 

    • Fault is intermittent caused by poor contact between PCM/TCM and Sensor, and DTC was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO