Kia Forte: ABS(Anti-Lock Brake System) / ABS Control Unit

Kia Forte 2019-2025 (BD) Service Manual / Brake System / ABS(Anti-Lock Brake System) / ABS Control Unit

Components and components location

Components

1. Front - right tube
2. Rear - left tube
3. Rear - right tube
4. Front - left tube

5. MC SEC
6. MC PRI
7. ABS control module (HECU)
8. Bracket

Repair procedures

Removal

1.	Turn ignition OFF and disconnect the negative (-) battery cable.

Remove the brake fluid from the master cylinder reservoir with a syringe.

•	Be sure to completely remove foreign substances from around brake fluid reservoir and cap before opening the reservoir cap. Otherwise, it may cause contamination of brake fluid and deterioration in braking performance.

•	Do not spill brake fluid on the vehicle as it may damage the paint. If brake fluid comes in contact with the paint, wash off immediately with water.

3.	Pull up the lock of the ABS connector (A) and then disconnect the connector.

Disconnect the brake tubes from the ABS by unlocking the nuts counterclockwise with a wrench.

Tightening torque :

A : 12.7 - 16.7 N·m (1.3 - 1.7 kgf·m, 9.4 - 12.3 lb·ft)

B : 18.6 - 22.6 N·m (1.9 - 2.3 kgf·m, 13.7 - 16.6 lb·ft)

Loosen the ABS bracket nuts (A), then remove ABS and bracket.

Tightening torque:

16.7 - 25.5 N·m (1.7 - 2.6 kgf·m, 12.3 - 18.8 lb·ft)

•	Never attempt to disassemble the ABS.

•	The ABS must be transported and stored in.

•	Never shock to the ABS.

Installation

1.	Install in the reverse order of removal.

2.	After installation, bleed the brake system. (Refer to Brake system - "Brake System Bleeding")

3.	Conduct the Variant coding.

4.	Conduct the Auto Detected Sensor Calibration.

5.	Conduct the Longitudinal G Sensor Calibration.

Diagnostic procedure by using diagnostic device

Perform diagnostic procedure by using diagnostic device as shown below:

Connect self-diagnosis connector (16pins) located under the driver side crash pad to self-diagnosis device, and then turn the self-diagnosis device after key is ON.

Select the "vehicle model" and "ABS/ESC" on KDS vehicle selection screen, then select OK.

[Variant Coding]

[Auto Detected Sensor Calibration]

[Longitudinal G Sensor Calibration]

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