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Removal - ICU

  1. Remove the remote ground cable from the ground stud on the right strut tower.
  2. Correctly isolate remote ground cable when servicing vehicle by installing the ground cable insulator on the strut tower ground stud as shown in (Fig 1 ) and installing the nut on the stud. This will prevent accidental grounding of the remote ground cable. 
    Fig 1: Correctly Isolating Remote Ground Cable
    G03497952Courtesy of DAIMLERCHRYSLER CORP.
  3. Using a brake pedal positioning tool such as shown in (Fig 2 ) depress brake pedal past its first 1 inch of travel and hold in this position. This will isolate the master cylinder reservoir from the brake hydraulic system, not allowing the brake fluid to drain out of the reservoir.
    Fig 2: Brake Pedal Holding Tool Installed
    G03497953Courtesy of DAIMLERCHRYSLER CORP.
  4. Remove the bolt and 2 nuts securing the speed control servo to vehicle. Disconnect the wire harness connector from speed control servo. Leaving the cable attached to the speed control servo, move it aside, out of the way.
  5. Remove the screw attaching the washer bottle filler neck to the vehicle. Move neck to the side without loosening the filler tube (Fig 3 ).
  6. Remove the nut and bolt holding the transmission controller and bracket to vehicle (Fig 3 ). Lift transmission controller up and move away from mounting position.
  7. Using Mopar(R) Brake Parts Cleaner or an equivalent, thoroughly clean all surfaces of the HCU. Also, thoroughly clean all brake tube to HCU connections.
    Fig 3: Locating Transmission Controller Mounting Bolt & Nut
    G03497954Courtesy of DAIMLERCHRYSLER CORP.
  8. Remove the primary and secondary brake tubes coming from the master cylinder, at the HCU, using a crow foot wrench (Fig 4 ).
    Fig 4: Locating Brake Tube Fittings
    G03497955Courtesy of DAIMLERCHRYSLER CORP.
  9. Remove the chassis brake tubes at the HCU (Fig 5 ), using a crow foot wrench.
    CAUTION: Do not apply a 12-volt power source to any terminals of the 24-way HCU connector when disconnected from the CAB.
  10. Disconnect the 24-way wiring harness connector from the CAB using the following procedure. Grasp the lock on the 24-way connector (Fig 5 ), and pull it up from the connector as far as possible. This will unlock and raise the 24-way connector out of the socket on the CAB.
    Fig 5: Locating 24-Way CAB Connector Lock
    G03497956Courtesy of DAIMLERCHRYSLER CORP.
  11. Raise vehicle.
  12. Remove the left front tire and wheel assembly.
  13. Remove fasteners securing the inner fender splash shield in place. Move the splash shield out of the way.
  14. Remove the 3 bolts attaching the ICU to the mounting bracket.
  15. Remove the ICU from its mounting bracket. Then, remove the ICU from the vehicle by pulling it out around the left side of the mounting bracket, then through the wheel well.
    NOTE: To separate the CAB from the HCU, (Refer to DISASSEMBLY  ).
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