LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2012 >> Optima LX, Automatic Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> Electronic Stability Control (ESC) System - Except HEV >> Front Wheel Speed Sensor >> Repair Procedures >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Repair Procedures: Inspection

  1. Measure the output voltage between the terminal of the wheel speed sensor and the body ground.
    CAUTION: In order to protect the wheel speed sensor, when measuring output voltage, a 100 Ω resister must be used as shown.
    Fig 1: Measuring Output Voltage Between Terminal Of Wheel Speed Sensor & Body Ground
    G07383637Courtesy of KIA MOTORS AMERICA, INC.
  2. Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage as shown below.
    Fig 2: Wheel Speed Sensor Output Voltage Graph
    G07383638Courtesy of KIA MOTORS AMERICA, INC.

    V_low : 0.59V ~ 0.84V

    V_high : 1.18V ~ 1.68V

    Frequency range : 1 ~ 2, 500Hz