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ICU (Integrated Control Unit): Removal

NOTE: Before proceeding, review Warnings and Cautions. (Refer to - WARNING ) (Refer to - BRAKES - CAUTION  )
  1. Using a brake pedal holder, depress the brake pedal past its first one inch of travel and hold it in this position (Fig 1 ). This will isolate the master cylinder from the brake hydraulic system and will not allow the brake fluid to drain out of the master cylinder reservoir.
  2. Disconnect battery negative (-) terminal and isolate cable.
  3. Raise vehicle.
  4. Remove left front tire and wheel assembly. (Refer to - REMOVAL )
  5. Remove access panel in forward portion of left front wheel well (Figure ).
  6. Remove belly pan front extension. (Refer to - REMOVAL )
  7. Pull outward on connector lock and disconnect 24-way connector at CAB.
    Fig 1: Identifying Brake Pedal Holding Tool Installed
    G02682618Courtesy of DAIMLERCHRYSLER CORP.
  8. Remove three chassis brake tubes going to brakes at ICU hydraulic control unit (Fig 2 ).
    Fig 2: Removing Brake Tubes At ICU
    G02682619Courtesy of DAIMLERCHRYSLER CORP.
  9. Remove primary and secondary brake tubes coming from master cylinder at ICU hydraulic control unit (Fig 2 ).
  10. Remove three bolts attaching ICU to mounting bracket (Fig 3 ).
    Fig 3: Removing ICU Mounting
    G02682620Courtesy of DAIMLERCHRYSLER CORP.
  11. Remove ICU from vehicle.
  12. If CAB and HCU must be separated, (Refer to DISASSEMBLY  ).
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