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Home >> Hyundai >> 2012 >> Equus Signature >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis >> DTC P0721: Output Speed Sensor Circuit Range/Performance >> Scantool Diagnostics >> 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 "Output speed sensor" parameter.
  4. Driving above 20 Km/h.

    Specification  : Increasing Gradually

    Fig 1: Display - Low Speed
    G08833198Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Display - High Speed
    G08833199Courtesy of HYUNDAI MOTOR AMERICA
  5. Is measured "Output speed sensor" value within specification?

    YES 

    Fault is intermittent caused by poor contact between 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 

    Go to "TERMINAL AND CONNECTOR INSPECTION " procedure.