BMW Cars 1999-06

Electronic Brake Control Module

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The control unit contains all the signal conditioning circuitry and the output circuits. The output circuits control the hydraulic unit to adjust the line pressure to each caliper. The unit is located under the dash panel on the left side in the E30 models and above the glove compartment in the E36 models.

Removal & Installation



  1. Turn the ignition key to the OFF position.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. On E30 models, remove the lower dash panel.
  6.  
  7. On E36 models remove the right side lower panel and the glove compartment.
  8.  
  9. Unlock the electrical connector retainer and carefully remove the electrical connector.
  10.  
  11. Remove the mounting bracket fasteners and remove the control unit.
  12.  
  13. Installation is in reverse order of assembly. On models equipped with ASC+T, the control unit must be initially activated in the throttle-valve idle position.
  14.  



Click image to see an enlarged view

Fig. The ABS control unit, the hydraulic unit and electrical relays-E30 model illustrated

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the cover in the engine compartment on the right side.
  4.  
  5. Push back the clamp. Pull off the right side then disengage the left side of the multiple plug.
  6.  
  7. Remove the mounting bolts and lift out the control unit.
  8.  

To install:

  1. Situate the control unit in its position, then install the mounting bolts.
  2.  
  3. Attach the multiple plug to the control unit, then engage the clamp.
  4.  
  5. Install the control unit cover, then connect the negative battery cable.
  6.  

 
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