Sedona EX V6-3.5L (2002)
Hydraulic Control Assembly - Antilock Brakes: Service and Repair
Removal
1. Turn ignition "OFF".
2. Disconnect ECU connectors from ECU assembly.
Caution: Do not apply a 12 volt power source to any terminal of the ECU connector when disconnected.
3. Mark the brake pipes going into and out of the HCU with tags so reinstallation of the brake lines will be correct.
Caution: Before removing the brake pipes from HCU, the HCU must be thoroughly cleared to prevent dirt particles from fal1ing into the ports of
HCU or entering the brake pipes.
4. Remove the brake pipes from the HCU.
5. Remove the bolts attaching the HECU bracket to the fender.
6. Remove HECU and bracket from vehicle.
7. Remove the mounting pin and grommet attaching the HECU to the bracket and remove HECU from bracket.
8. Remove the bolts securing the ECU to the HCU and lift the ECU carefully off the HCU.
9. Verity that the seal on the ECU is free from nicks or cracking.
Replacement
1. Carefully replace ECU on the replacement HCU.
2. Torque the ECU bolts in the following two steps:
A. Start all bolts into the HCU and hand tighten.
B. Torque in the sequence shown until a final achieved for each bolt.
Tightening torque: 1.3 - 1.4 ft. lbs. (1.7 - 1.9 Nm, 0.18 - 0.2 kg-m)
3. Reattach bracket to the HECU mounting pin and grommet.
Tightening torque: 5.8 - 7.2 ft. lbs. (8 - 9.8 Nm, 0.8 - 1.0 kg-m)
4. Reinstall bolts and nuts attaching bracket to fender.
Tightening torque: 9.4 - 15.9 ft. lbs. (12.8 - 21.6 Nm, 1.3 - 2.2 kg-m)
Notice: When installing the brake pipe lines on the HCU valve block, they must be located correctly in the valve block to ensure proper ABS
operation.
5. Attach brake pipes to HECU, be careful to reattach the pipes in the same positions which they were in prior to removal.
Tightening torque: 9.4 - 15.9 ft. lbs. (12.8 - 21.6 Nm, 1.3 - 2.2 kg-m)
6. Reconnect ECU harness connectors.
7. Bleed the brakes.
8. Road test vehicle to ensure proper operation of the base and ABS systems.
