Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Kia >> 2007 >> Optima LX, 2.4 3, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Automatic Transaxle System) >> DTC P0721 Output Speed Sensor Circuit Range/Performance >> Signal Circuit Inspection

Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Ignition "ON" & Engine "OFF".
  2. Disconnect the "OUTPUT SPEED SENSOR" connector.
  3. Measure voltage between terminal "2" of the OUTPUT SPEED SENSOR harness connector and chassis ground.

    Specification: approx. 5V

    Fig 1: Identifying Output Speed Sensor
    G04805105Courtesy of KIA MOTORS AMERICA, INC.
  4. Is voltage within specification?

    YES  : --> Go to "POWER SUPPLY CIRCUIT INSPECTION " procedure.

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

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