ICU (Integrated Control Unit): Installation
- Install the ICU onto its mounting bracket.
- Install the 3 bolts attaching the ICU to the mounting bracket. Tighten the 3 mounting bolts to a torque of 11 N.m (97 in. lbs.).
- Install the primary and secondary brake tubes from the master cylinder (Figure ). Using a crow foot on a torque wrench, tighten the primary and secondary brake tube nuts to a torque of 17 N.m (145 in. lbs.).
- Install the three chassis brake tubes into their respective outlet ports on the ICU hydraulic control unit. (Figure ). Using a crow foot on a torque wrench, tighten the three brake tube nuts to a torque of 17 N.m (145 in. lbs.).
- Install the 25-way connector into the socket of the CAB (Figure
) as follows:
- Position the 25-way connector in the socket of the CAB and carefully push it down as far as possible.
- When the connector is fully seated into the CAB socket, push the connector lock inward. This pulls the connector into the socket of the CAB and locks it in the installed position.
- Install front bumper and fascia, and hood. (Refer to FRONT FASCIA - INSTALLATION ).
- Connect the negative (ground) terminal.
- Remove the brake pedal prop.
- Bleed the base brakes and ABS, then repeat bleeding the base brake hydraulic system. (Refer to STANDARD PROCEDURE - ANTILOCK BRAKE SYSTEM BLEEDING ).
- Fill the master cylinder to the proper fill level.
- Road test the vehicle to ensure proper operation of the base and antilock brake systems.
CAUTION:
Before installing the 25-way connector in the CAB, be sure the seal is properly installed in the connector.
NOTE:
The ICU may need to be initialized using the DRBIII(R) scan tool after ICU installation. Refer to Appropriate Diagnostic Information.