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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Anti-Lock Brake System (Service Information)) >> Hydraulic/Mechanical >> Integrated Control Unit (ICU) >> Removal >> Diesel Engine

Diesel Engine

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before proceeding, refer to Brakes - Warning and Brakes - Caution .
  1. Disconnect and isolate battery negative cable from battery post.
    Fig 1: Depressing Brake Pedal Using Brake Pedal Holding Tool
    GC0098418Courtesy of CHRYSLER LLC
  2. Using a brake pedal holding tool as shown in the illustration above, depress the brake pedal past its first 25 mm (1 inch) of travel and hold it in this position. 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 while the lines are disconnected.
  3. Raise and support the vehicle. Refer to Vehicle Quick Reference/Hoisting - Standard Procedure .
    Fig 2: Locating Integrated Control Unit (ICU)
    GC0082347Courtesy of CHRYSLER LLC
  4. Loosen, but do not remove, the two mounting screws (2) attaching the ICU (1) mounting bracket to the body.
  5. Loosen the air inlet tube at the turbocharger.
  6. Lower the vehicle.
  7. Remove the engine appearance cover.
  8. Loosen the air inlet tube at the air cleaner and engine cylinder head cover, then remove the tube.
  9. Loosen lower and upper mounting nuts, then remove the heat shield from the dash panel.
  10. Pull the brake tube bundle routing clips (with tubes) loose from studs on the dash panel.
    Fig 3: Identifying Brake Tubes At Hydraulic Control Unit
    GC0079880Courtesy of CHRYSLER LLC
  11. Remove primary (4) and secondary (1) brake tubes (from master cylinder) at hydraulic control unit (7).
  12. Remove remaining brake tubes (2, 3, 5, 6) at hydraulic control unit (7).
    Fig 4: Locating ABM Connector Release Tabs
    GC0079881Courtesy of CHRYSLER LLC
    NOTE: Use this figure in the following step to release the ABM harness connector cover. It shows the location of the release tabs.
    Fig 5: Identifying Wiring Harness Connector & ABM
    GC0081322Courtesy of CHRYSLER LLC
    1 - ABM (PART OF ICU)
    2 - WIRING HARNESS CONNECTOR
  13. Disconnect the ABM harness connector from the Antilock Brake Module (ABM). To do so:
    1. Depress the tabs on each side of the connector cover, then
    2. 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 outward off the ABM (1).
    Fig 6: Locating Integrated Control Unit (ICU)
    GC0082347Courtesy of CHRYSLER LLC
  14. Lift the ICU and mounting bracket (1) off the mounting screws (2).
    Fig 7: Removing/Installing ICU Mounting Bracket
    GC0083967Courtesy of CHRYSLER LLC
  15. Rotate the ICU (1) around behind the engine until the bracket mounting screw (3) can be accessed.
  16. Remove the ICU bracket mounting screw (3), then remove the bracket (2) from the ICU (1). The ICU has mounting pins that are inserted into grommets in the bracket that must be overcome to remove bracket.
    Fig 8: Removing/Installing ICU - Diesel
    GC0083968Courtesy of CHRYSLER LLC
  17. Remove the ICU (1) from the engine compartment out over the engine cylinder head cover (2).
  18. To separate the ABM from the HCU, see Brakes/Hydraulic/Mechanical/INTEGRATED CONTROL UNIT (ICU) - Disassembly .
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