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Integrated Control Unit - LHD - Diesel Engine

NOTE: Before proceeding, refer to WARNING . and CAUTION .
  1. Disconnect and isolate battery negative cable from battery post.
    Fig 1: BRAKE PEDAL HOLDING TOOL
    GC0053020Courtesy of CHRYSLER LLC
  2. Using a brake pedal holding tool as shown in illustration, 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 STANDARD PROCEDURE .
    Fig 2: ICU MOUNTING
    GC0053101Courtesy 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: BRAKE TUBES AT ICU - MK25E
    GC0039491Courtesy 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: ABM Connector Release Tabs
    GC0000018Courtesy of CHRYSLER LLC
    NOTE: Use Fig 4 in the following step to release the ABM harness connector cover. It shows the location of the release tabs.
    Fig 5: Anti-Lock Brake Module Wiring Harness Connector
    GC0000017Courtesy 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:
    • Depress the tabs on each side of the connector cover, then
    • 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: ICU MOUNTING
    GC0053101Courtesy of CHRYSLER LLC
  14. Lift the ICU and mounting bracket (1) off the mounting screws (2).
    Fig 7: ICU BRACKET MOUNTING - DIESEL
    GC0053102Courtesy 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: ICU REMOVAL/INSTALLATION - DIESEL
    GC0053103Courtesy 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 DISASSEMBLY .
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