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Home >> Kia >> 2008 >> Magentis 2.4 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Automatic Transaxle System) >> DTC P0721 Output Speed Sensor Circuit Range/Performance >> Ground Circuit Inspection

Ground Circuit Inspection

WARNING: This page is about a different car, the 2007 Kia Optima, 2007 Kia Magentis, 2006 Kia Optima, and 2006 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition "ON" & Engine "OFF".
  2. Disconnect the "OUTPUT SPEED SENSOR" connector.
  3. Measure resistance between terminal "1" of the OUTPUT SPEED SENSOR harness connector and chassis ground.

    Specification: approx. 0 Ω

    Fig 1: Identifying Output Speed Sensor And Sensor Ground
    G04805107Courtesy of KIA MOTORS AMERICA, INC.
  4. Is resistance within specification?

    YES  : --> Go to "COMPONENT INSPECTION " procedure.

    no  : --> Check for open in harness. Repair as necessary and Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    --> If ground circuit in harness is OK, Go to  2 "Check TCM (PCM)" of the "Component Inspection" procedure.