Front Wheel Speed Sensor
Components and Component Location
Components

| 1. Front Wheel Speed Sensor |
2. Front wheel speed sensor connector |
Repair Procedures
Removal and Installation
Disconnect the negative (-) battery cable.
Remove the front wheel and tire.
(See Suspension System — Wheel)
Remove the front wheel guard.
(Refer to Body - "Front Wheel Guard")
Disconnect the front wheel speed sensor connector (A), then remove the retaining clip (B).

Remove the bolt (A) of the front wheel speed sensor cable bracket.
Tightening torque: 19.6–29 N·m

Loosen the bolt and disconnect the front wheel speed sensor (A).
Tightening torque: 6.9–10.8 N·m

Install in the reverse order of removal.
Inspection
Measure the output voltage between the wheel speed sensor terminal and body ground.
Compare the change in the wheel speed sensor output voltage with the normal output voltage change, as shown below.

V_low: 0.59–0.84 V
V_high: 1.18–1.68 V
Frequency range: 1–2,500 Hz
Installation
Install in the reverse order of removal.
Test yourself
A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.