Repair Procedures

Removal

1. Turn ignition switch OFF.
2. Pull up the lock of the HECU connector (A), and then disconnect the connector.




3. 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)




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 ESP HECU, operate following functions. (Hill start assist control only)
1. "Steering Angle Sensor Calibration" for steering angle sensor offset correction.
2. "Longitudinal Sensor Calibration" for Longitudinal sensor offset correction.