Repair Procedures: Removal

Turn the ignition switch OFF.
Remove the surge tank. [G3.3 GDI]
(Refer to "SURGE TANK ")
Remove the brake fluid from the master cylinder reservoir with a syringe.
CAUTION:
- 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.
- 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.
Pull up the lock of the HECU connector (A) and then disconnect the connector.

Fig 1: HECU Connector
Courtesy of KIA MOTORS AMERICA, INC.
Disconnect the brake tubes from the HECU by unlocking the nuts counterclockwise with a spanner.
Tightening torque:
1. 12.7 ~ 16.7 N.m (1.3 ~ 1.7 kgf.m, 9.4 ~ 12.3 lb-ft)
2. 18.6 ~ 22.6 N.m (1.9 ~ 2.3 kgf.m, 13.7 ~ 16.6 lb-ft)
  
  Fig 2: HECU Brake Tube Mounting Nut
  Courtesy of KIA MOTORS AMERICA, INC.
Loosen the HECU bracket nuts (A) and 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)

Fig 3: HECU Bracket Mounting Nuts
Courtesy of KIA MOTORS AMERICA, INC.
CAUTION:
1. Never attempt to disassemble the HECU.
2. Never shock the HECU.
Remove the bolts and 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)