ESP Control Unit Repair Procedures

Removal

1. 1
   Turn the ignition switch OFF, then disconnect the negative (-) battery cable.
2. 2
   Disconnect the intercooler inlet hose (A) from the turbocharger, then remove the intercooler inlet pipe (B). [Gasoline 1.6 T-GDI] Tightening torque: Clamp: 4.9–6.9 N·m Mounting bolt: 18.6–24 N·m

   

3. 3
   Pull up the HECU connector lock, then disconnect the connector (A).

   

4. 4
   Disconnect the brake tubes from the HECU by turning the nuts (6 pcs.) counterclockwise using a wrench.

   Tightening torque: 12.7–16.7 N·m

   

   Tightening torque: 18.6 – 22 N·m

   

5. 5
   Loosen the ABS control module mounting nut (A) and remove the ABS control module from the vehicle.

   Tightening torque: 12.7–16.7 N·m

   

6. 6
   Separate the bracket (B) after removing the mounting bolt from the HECU (A).

   

Installation

1. 1
   To install, reverse the removal procedure.
2. 2
   Tighten the HECU mounting bolts and nuts to the specified torque.
3. 3
   After installation, bleed the brake system. (Refer to Electronic Stability Program (ESP) System - "ESP System Bleeding")
4. 4
   Perform variant coding.
5. 5
   Perform automatic sensor calibration.
6. 6
   Perform longitudinal acceleration sensor calibration.

Adjustment

Diagnostic Procedure Using a Scan Tool: As a guide to diagnostic methods using the scan tool, the main contents are as follows: Connect the self-diagnosis connector (16-pin) located at the lower part of the driver's side instrument panel to the self-diagnosis device, then turn the self-diagnosis device on after turning the key ON. Select "Vehicle Model" and "ABS/ESC" on the GDS vehicle selection screen, then select OK.

[Variant Coding]

[Automatic Sensor Calibration]

[Longitudinal Acceleration Sensor Calibration]