Catera 2000-2001

Electronic Brake Control Module

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
    WARNING
    To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.

  2.  
  3. Turn the ignition switch to the OFF position.
  4.  
  5. Remove the power steering fluid reservoir bolt (2).
  6.  
  7. Lay the power steering fluid reservoir (1) to one side.
  8.  
  9. Remove the upper radiator hose from the engine only.
  10.  
  11. Move the radiator hose to one side.

    Click image to see an enlarged view

    Fig. Power steering reservoir (1) and mounting bolt (2)



    Click image to see an enlarged view

    Fig. Relay center (1) and electronic control module (2)

  12.  
  13. Remove the cover from the relay center (1).
  14.  
  15. Remove the Engine Control Module (ECM) (2) from the relay center (1).
  16.  
  17. Move the ECM harness to one side.
    WARNING
    To prevent equipment damage, never connect or disconnect the wiring harness connection from the EBCM with the ignition switch in the ON position.


    WARNING
    Avoid getting water, brake fluid or engine coolant into the socket of the EBCM/EBTCM connector. Failure to observe this precaution could result in damage to the EBCM/EBTCM.

  18.  
  19. Pull out lock tab (1) from EBCM harness connector.
  20.  
  21. Disconnect the EBTCM harness connector.
    NOTE
    Note the locations of the brake pipes in order to aid in installation.



    Click image to see an enlarged view

    Fig. EBCM harness connector lock tab (1)

  22.  
  23. Disconnect the wheel cylinder brake pipes (2) from the BPMV (1).
  24.  
  25. Disconnect the master cylinder brake pipes (2) from the BPMV (1).
  26.  
  27. Plug the brake pipes to prevent loss of fluid and entrance of dirt.

    Click image to see an enlarged view

    Fig. Brake pipe connections (2) on BPMV (1)



    Click image to see an enlarged view

    Fig. BPMV mounting nuts (2) and heat shield (3)

  28.  
  29. Remove the two nuts (2) that connect the BPMV (1) to the BPMV bracket.
  30.  
  31. Slide the heat shield (3) off the insulator stud (2).
  32.  
  33. Push brake pipes to one side.
    NOTE
    Reposition the brake pipes only as necessary to remove the BPMV from the bracket.


    WARNING
    When removing the brake pressure modulator valve, protect the vehicle exterior from possible brake fluid spillage. Brake fluid can cause damage to painted surfaces.

  34.  
  35. Remove the BPMV and EBCM (1) as an assembly from the bracket (7).
  36.  
  37. Remove EBCM if replacing the BPMV only.

    Click image to see an enlarged view

    Fig. EBCM assembly and mounting hardware

  38.  

To install:

  1. Install EBTCM if replacing the BPMV only.
  2.  
  3. Install BPMV and EBTCM (1) as an assembly into the BPMV bracket (7).
  4.  
  5. Align the flats of the studs on the BPMV (1) with the BPMV bracket (7).
  6.  
  7. Make sure the BPMV is all the way down onto the lower insulator stud.

    Click image to see an enlarged view

    Fig. EBCM assembly and mounting hardware



    Click image to see an enlarged view

    Fig. Installing heat shield

  8.  
  9. Slide the heat shield (3) onto the insulator stud (2).
  10.  
  11. Install the two BPMV to BPMV bracket nuts (2) and tighten to 106 inch lbs. (12 Nm).
    NOTE
    If a new BPMV is being installed, remove the shipping plugs from the valve openings in the compartment during the next step.


    NOTE
    Use the locations noted during removal.


    CAUTION
    Make sure brake pipes are correctly connected to brake pressure modulator valve. If brake pipes are switched by mistake, wheel lockup will occur and personal injury may result. The only two ways this condition can be detected are by using a Scan Tool or by doing an Antilock stop.

  12.  
  13. Install the master cylinder brake pipes (2) on the BPMV (1).
  14.  
  15. Install the wheel cylinder brake pipes (2) on the BPMV (1) and tighten all of the brake pipe fittings to 11 ft. lbs. (15 Nm).

    Click image to see an enlarged view

    Fig. Brake pipe connections (2) on BPMV (1)

  16.  
  17. Connect the EBCM harness connector.
  18.  
  19. Push in lock tab.
  20.  
  21. Install the ECM into the relay center.
  22.  
  23. Install the relay center cover.
  24.  
  25. Install the upper radiator hose to the engine.
  26.  
  27. Install the power steering fluid reservoir.
  28.  
  29. Fill and bleed the brake hydraulic system.
  30.  
  31. Turn the ignition switch to the ON position, engine off.
  32.  
  33. Use an OBD II compatible scan tool to perform a system check.
  34.  

 
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