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Installation - ICU

  1. Install the ICU back in the vehicle and attach it to its mounting bracket. Tighten the 3 ICU mounting bolts to 11 N.m (97 in. lbs.).
  2. Reinstall the inner fender splash shield.
  3. Reinstall the tire and wheel assembly.)
  4. Lower the vehicle.
    CAUTION: Before installing the 24-way connector in the CAB be sure that the seal is properly installed in the connector.
  5. Install the 24-way connector into the socket on the CAB. The connector is installed using the following procedure. Position the 24-way connector in the socket on the CAB and carefully push it onto CAB as far as it will go. When connector is fully seated into the CAB socket push in the connector lock (Figure ) as far as it will go. This will pull the 24-way connector into the socket on the CAB and lock it in the installed position.
  6. Install the 4 chassis brake tubes on the HCU (Figure ). Tighten the chassis brake tubes to 17 N.m (145 in. lbs.).
  7. Install the primary and secondary brake lines from the master cylinder on the HCU (Figure ). Tighten the primary and secondary brake tubes to 17 N.m (145 in. lbs.).
  8. Reinstall the transmission controller (Figure ).
  9. Reattach the washer bottle filler neck to the radiator support.
  10. Reinstall the speed control servo to its mounting studs and radiator support.
  11. Remove brake pedal positioning tool.
  12. Install the remote ground cable onto the ground stud located on left shock tower. Install the remote ground cable attaching nut and tighten to a torque of 28 N.m (250 in. lbs.).
    NOTE: The ICU may need to be initialized using the DRBIII(R) scan tool after installation.
  13. Bleed the base brakes and the ABS brakes hydraulic system. (Refer to STANDARD PROCEDURE - ANTILOCK BRAKE SYSTEM BLEEDING  )
  14. Road test vehicle to ensure proper operation of the base and ABS systems.
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