Repair Procedures

Removal

1. Turn ignition switch OFF.
2. Disconnect the brake tubes from the HECU by unlocking the nuts counterclockwise with a spanner.

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)




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




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

Tightening torque:
16.7 - 25.5 N.m (1.7 - 2.6 kgf.m, 12.3 - 18.8 lb-ft)





CAUTION:
- Never attempt to disassemble the HECU.
- The HECU must be transported and stored in.
- Never shock to the HECU.

5. Remove the 3 bolts, and then remove the bracket from HECU.

Tightening torque:
11 - 14 N.m (1.1 - 1.4 kgf.m, 8.1 - 10.3 lb-ft)

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.


NOTE:
In a case of replacing ESC HECU, operate following functions.
1. "Steering Angle Sensor Calibration" for steering angle sensor offset correction.

2. "Longitudinal Sensor Calibration" for Longitudinal sensor offset correction.