Electronic Brake Control Module: Service and Repair

HECU (HYDRAULIC AND ELECTRONIC CONTROL UNIT)





COMPONENTS

REMOVAL





1. Remove Hydraulic and Electronic Control Unit (HECU) connector.





2. Remove brake tubes from HECU.





3. Remove HECU after loosening HECU bolt.

CAUTION:
^ Be careful to remove HECU because of too heavy.
^ Never attempt to disassemble the HECU
^ The HECU must be transported and stored in an upright position and with the ports sealed.

4. Remove HECU bracket if necessary.

REPLACEMENT





1. Tighten HECU bracket bolt.
Tightening torque
HECU bracket bolt: 17 - 25 Nm (170 - 250 kg-cm, 12 - 18 ft. lbs.)
2. Install HECU bolt.
Tightening torque
HECU bolt: 8 - 10 Nm (80 - 100 kg cm, 5.6 - 6.9 ft. lbs.)





3. Install brake tubes to HECU.
Tightening torque
Brake tube nut (M10) for ABS & TCS: 13 - 17 Nm (130 - 170 kg-cm, 9 - 12 ft. lbs.)
Brake tube nut (M12) for ESP 19 - 23 Nm (190 - 230 kg cm, 14 - 17 ft. lbs.)
4. Connect HECU connector to HECU.
5. If necessary, bleed the air and test driving.