Electronic Stability Control (Esc) System - Except Hev: Removal & Installation Kia Optima III

Installation

1. Installation is the reverse of removal.
2. Tighten the HECU mounting bolts and nuts to the specified torque.
3. After installation, bleed the brake system. Refer to «BRAKE SYSTEM BLEEDING»(ref-429579-S13698384752011101500000) .

Scheme 16

Scheme 17

1. Remove the front wheel and tire. Tightening torque: 88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
2. Remove the front wheel speed sensor mounting bolt (A). Tightening torque: 7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)
3. Remove the front wheel guard.
4. Remove the front wheel speed sensor cable mounting bolt.
5. Disconnect the front wheel speed sensor connector, then remove the front wheel speed sensor.
6. Installation is the reverse of removal.

Scheme 18

Scheme 19

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 ohms resister must be used as shown.
2. Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage as shown below. V_low : 0.59V ~ 0.84V V_high : 1.18V ~ 1.68V Frequency range : 1 ~ 2, 500Hz

Scheme 20

Scheme 21

1. Remove the rear wheel and tire. Tightening torque: 88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
2. Remove the rear wheel speed sensor mounting bolt (A). Tightening torque: 7.8 ~ 9.8 N.m (0.8 ~ 1.0 kgf.m, 5.8 ~ 7.2 lb-ft)
3. Remove the rear seat back. Refer to «REAR SEAT»(ref-429576-S10343832112011101500000) .
4. Disconnect the rear wheel speed sensor connector.
5. Installation is the reverse of removal. CAUTION: Install the rear sensor after lubricating the O-ring of sensor with the assembly fluid (RAREMAX AF-1) When inserting the sensor, take care the O-ring not to be damaged.

Scheme 22

Scheme 23

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 ohms resister must be used as shown.
2. Compare the change of the output voltage of the wheel speed sensor to the normal change of the output voltage as shown below. V_low : 0.59V ~ 0.84V V_high : 1.18V ~ 1.68V Frequency range : 1 ~ 2, 500Hz