Integrated Control Unit

Integrated Control Unit

Removal

- Disconnect negative (-) battery cable from battery post and isolate.

- Using a brake pedal holding tool, depress brake pedal past its first inch of travel and hold it in this position. Holding pedal in this position will isolate master cylinder from hydraulic brake system and will not allow brake fluid to drain out of brake fluid reservoir while brake lines are open.






- Remove the primary (4) and secondary (1) brake tubes (from master cylinder) at the hydraulic control unit (7).

- Remove the remaining brake tubes (2, 3, 5, 6) at the hydraulic control unit (7).






• Use this figure in the following step to release the ABM harness connector cover. It shows the location of the release tabs.








• 1 - ABM (part of ICU).

• 2 - Wiring harness connector.

- Disconnect the ABM harness connector from the module.

- Depress the tabs on each side of the connector cover.

- Pull outward and upward on the lower half of the cover until it locks into position pointing straight outward (2). The connector can then be pulled straight off the ABM (1).






- Remove the single mounting bolt (1) securing the ICU (2) to the mounting bracket (3).

- Lift the ICU off the mounting bracket, dislocating the mounting pins from the grommets in the bracket.

- If the ABM and HCU need to be separated, refer to => [ Integrated Control Unit ] Integrated Control Unit.

Installation






- Position the ICU (2) above the mounting bracket (3) in the vehicle. Insert the mounting pins on the ICU into the grommets mounted in the bracket, then install the single mounting bolt (1). Tighten the mounting bolt to 11 Nm (97 in. lbs.).






• 1 - ABM (part of ICU).

• 2 - Wiring harness connector.


Before installing the ABM harness connector on the ABM, be sure the seal is properly installed in the connector.

- Insert the ABM wiring harness connector (2) into the socket of the ABM (1) and close the cover, locking the connector in place.







The brake tubes must be routed to the correct ports. Improper routing can lead to degraded or undesirable system performance including external brake fluid leaks.

• 1 - Master Cylinder Secondary.

• 2 - Front Left.

• 3 - Front Right.

• 4 - Master Cylinder Primary.

• 5 - Rear Left.

• 6 - Rear Right.

- Install the four chassis brake tubes (2, 3, 5, 6) brake tubes at the ICU hydraulic control unit (7). Tighten the tube nuts to 14 Nm (120 in. lbs.).

- Install the primary (4) and secondary (1) brake tubes at the ICU hydraulic control unit (7). Tighten the tube nuts to 14 Nm (120 in. lbs.).

- Remove brake pedal holding tool.

- Connect negative battery cable to battery post.






Hook up the scan tool to initialize the ABM and perform the following:

- Clear any faults.

- Fill the master cylinder to the proper fill level and bleed the base and ABS hydraulic systems. Refer to => [ Base Brake Bleeding ] Base Brake Bleeding.

- Test for leaks.

- Perform the ABS Verification Test and road test the vehicle.