Kia Optima: Removal - ESC Control Module. Repair procedures - ESC(Electronic Stability Control) System - Brake System - Kia Optima TF 2011-2019 Service ManualKia Optima: Removal

1. Turn the ignition switch OFF.
2. Remove the air duct (B) and air cleaner assembly (A).

3. Remove the ECM connector (B) and the arrange the wiring harness (A).

4. Pull up the lock of the HECU connector (A) , then disconnect the connector.

5. Remove the brake fluid from the master cylinder reservoir with a syringe.
Х Be sure to completely remove foreign substances from around brake fluid reservoir and cap before opening the reservoir cap. If not, it may cause contamination of brake fluid and deterioration in braking performance.
Х Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water.
6. Disconnect the brake tubes from the HECU by unlocking the nuts counterclockwise with a spanner.

Tightening torque:

M10: 11.7 ~ 15.7 N.m (1.2 ~ 1.6 kgf.m, 8.7 ~ 11.6 lb-ft)

M12: 18.6 ~ 22.6 N.m (1.9 ~ 2.3 kgf.m, 13.7 ~ 16.6 lb-ft)

7. Loosen the HECU bracket bolts (A), then remove HECU and bracket.

Tightening torque :

19.6 ~ 29.4 N.m(2.0 ~ 3.0 kgf.m, 14.5 ~ 21.7 lb-ft)


1. Never attempt to disassemble the HECU.
2. Never shock the HECU.
8. Remove the 2 nuts (B), then remove the bracket from HECU.

Tightening torque :

10.8 ~ 13.7 N.m (1.1 ~ 1.4 kgf.m, 8.0 ~ 10.1 lb-ft)



ESC Control Module. Repair procedures
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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 b ...

See also:

A/C Pressure Transducer. Description and Operation
Description A/C pressure transducer convert the pressure value of high pressure line into voltage value after measure it. By converted voltage value, engine ECU controls cooling fan by operating ...

Inspection
1. Check that the red light flickers when the door lock or unlock button is pressed on the transmitter. 2. Remove the battery (A) and check voltage if the red light d ...

Removal
1. Disconnect the battery negative cable and wait for at least three minutes before beginning work. 2. Remove the glove box housing. (Refer to the Body group- crash p ...

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