Audi Cars 1999-05

Motronic Engine Control Module 1

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Removal & Installation



  1. Remove the windshield wiper arms, the plenum chamber cover and the plenum chamber bulkhead.

    Click image to see an enlarged view

    Fig. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).

  2.  
  3. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).
  4.  
  5. Remove the bolts with locking pliers.

    Click image to see an enlarged view

    Fig. Insert a screwdriver (A) between protective housing and retaining plate (arrow).

  6.  
  7. Insert a screwdriver between the protective housing and the retaining plate.

    Click image to see an enlarged view

    Fig. Use screwdriver (A) to pry protective housing upward, and then pull if off sideways from retaining plate (arrow)

  8.  
  9. Use screwdriver to pry the protective housing upward, and then pull if off sideways from the retaining plate.

    Click image to see an enlarged view

    Fig. Release and pull off front connector (1) from ECM and pry retaining tab (2) slightly open.

  10.  
  11. Release and pull off the front connector from the Motronic Engine Control Module (ECM).
  12.  
  13. Pry the retaining tab slightly open.
  14.  
  15. Then, push the Motronic Engine Control Module (ECM) out of retainer.
  16.  
  17. Release the rear connector from the Motronic Engine Control Module (ECM) and pull it off.
  18.  

To install:

  1. Connect the rear connector to the Motronic Engine Control Module (ECM) and lock it into place.
  2.  
  3. Push the Motronic Engine Control Module (ECM) onto retaining plate.
  4.  
  5. Connect the front connector to the Motronic Engine Control Module (ECM) and lock it into place.
  6.  
  7. Check whether the new control module identification matches the old control module identification.
  8.  
  9. Perform function "Replacing control module" using the vehicle diagnosis and service information system.

    Click image to see an enlarged view

    Fig. Push protective housing (2) onto retaining plate, and screw in shear bolts (1) uniformly until the bolt heads begin to shear.

  10.  
  11. Push the protective housing onto retaining plate.
  12.  
  13. Screw in the shear bolts uniformly until the bolt heads begin to shear.
  14.  
  15. Install the plenum chamber bulkhead, the plenum chamber cover and the windshield wiper arms.
  16.  

  1. Remove the windshield wiper arms, the plenum chamber cover and the plenum chamber bulkhead.

    Click image to see an enlarged view

    Fig. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).

  2.  
  3. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).
  4.  
  5. Remove the bolts with locking pliers.

    Click image to see an enlarged view

    Fig. Insert a screwdriver (A) between protective housing and retaining plate (arrow).

  6.  
  7. Insert a screwdriver between the protective housing and the retaining plate.

    Click image to see an enlarged view

    Fig. Use screwdriver (A) to pry protective housing upward, and then pull if off sideways from retaining plate (arrow)

  8.  
  9. Use screwdriver to pry the protective housing upward, and then pull if off sideways from the retaining plate.

    Click image to see an enlarged view

    Fig. Release and pull off front connector (1) from ECM and pry retaining tab (2) slightly open.

  10.  
  11. Release and pull off the front connector from the Motronic Engine Control Module (ECM).
  12.  
  13. Pry the retaining tab slightly open.
  14.  
  15. Then, push the Motronic Engine Control Module (ECM) out of retainer.
  16.  
  17. Release the rear connector from the Motronic Engine Control Module (ECM) and pull it off.
  18.  

To install:

  1. Connect the rear connector to the Motronic Engine Control Module (ECM) and lock it into place.
  2.  
  3. Push the Motronic Engine Control Module (ECM) onto retaining plate.
  4.  
  5. Connect the front connector to the Motronic Engine Control Module (ECM) and lock it into place.
  6.  
  7. Check whether the new control module identification matches the old control module identification.
  8.  
  9. Perform function "Replacing control module" using the vehicle diagnosis and service information system.

    Click image to see an enlarged view

    Fig. Push protective housing (2) onto retaining plate, and screw in shear bolts (1) uniformly until the bolt heads begin to shear.

  10.  
  11. Push the protective housing onto retaining plate.
  12.  
  13. Screw in the shear bolts uniformly until the bolt heads begin to shear.
  14.  
  15. Install the plenum chamber bulkhead, the plenum chamber cover and the windshield wiper arms.
  16.  

  1. Remove the windshield wiper arms, the plenum chamber cover and the plenum chamber bulkhead.

    Click image to see an enlarged view

    Fig. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).

  2.  
  3. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).
  4.  
  5. Remove the bolts with locking pliers.

    Click image to see an enlarged view

    Fig. Insert a screwdriver (A) between protective housing and retaining plate (arrow).

  6.  
  7. Insert a screwdriver between the protective housing and the retaining plate.

    Click image to see an enlarged view

    Fig. Use screwdriver (A) to pry protective housing upward, and then pull if off sideways from retaining plate (arrow)

  8.  
  9. Use screwdriver to pry the protective housing upward, and then pull if off sideways from the retaining plate.

    Click image to see an enlarged view

    Fig. Release and pull off front connector (1) from ECM and pry retaining tab (2) slightly open.

  10.  
  11. Release and pull off the front connector from the Motronic Engine Control Module (ECM).
  12.  
  13. Pry the retaining tab slightly open.
  14.  
  15. Then, push the Motronic Engine Control Module (ECM) out of retainer.
  16.  
  17. Release the rear connector from the Motronic Engine Control Module (ECM) and pull it off.
  18.  

To install:

  1. Connect the rear connector to the Motronic Engine Control Module (ECM) and lock it into place.
  2.  
  3. Push the Motronic Engine Control Module (ECM) onto retaining plate.
  4.  
  5. Connect the front connector to the Motronic Engine Control Module (ECM) and lock it into place.
  6.  
  7. Check whether the new control module identification matches the old control module identification.
  8.  
  9. Perform function "Replacing control module" using the vehicle diagnosis and service information system.

    Click image to see an enlarged view

    Fig. Push protective housing (2) onto retaining plate, and screw in shear bolts (1) uniformly until the bolt heads begin to shear.

  10.  
  11. Push the protective housing onto retaining plate.
  12.  
  13. Screw in the shear bolts uniformly until the bolt heads begin to shear.
  14.  
  15. Install the plenum chamber bulkhead, the plenum chamber cover and the windshield wiper arms.
  16.  

  1. Remove the windshield wiper arms, the plenum chamber cover and the plenum chamber bulkhead.

    Click image to see an enlarged view

    Fig. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).

  2.  
  3. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).
  4.  
  5. Remove the bolts with locking pliers.

    Click image to see an enlarged view

    Fig. Insert a screwdriver (A) between protective housing and retaining plate (arrow).

  6.  
  7. Insert a screwdriver between the protective housing and the retaining plate.

    Click image to see an enlarged view

    Fig. Use screwdriver (A) to pry protective housing upward, and then pull if off sideways from retaining plate (arrow)

  8.  
  9. Use screwdriver to pry the protective housing upward, and then pull if off sideways from the retaining plate.

    Click image to see an enlarged view

    Fig. Release and pull off front connector (1) from ECM and pry retaining tab (2) slightly open.

  10.  
  11. Release and pull off the front connector from the Motronic Engine Control Module (ECM).
  12.  
  13. Pry the retaining tab slightly open.
  14.  
  15. Then, push the Motronic Engine Control Module (ECM) out of retainer.
  16.  
  17. Release the rear connector from the Motronic Engine Control Module (ECM) and pull it off.
  18.  

To install:

  1. Connect the rear connector to the Motronic Engine Control Module (ECM) and lock it into place.
  2.  
  3. Push the Motronic Engine Control Module (ECM) onto retaining plate.
  4.  
  5. Connect the front connector to the Motronic Engine Control Module (ECM) and lock it into place.
  6.  
  7. Check whether the new control module identification matches the old control module identification.
  8.  
  9. Perform function "Replacing control module" using the vehicle diagnosis and service information system.

    Click image to see an enlarged view

    Fig. Push protective housing (2) onto retaining plate, and screw in shear bolts (1) uniformly until the bolt heads begin to shear.

  10.  
  11. Push the protective housing onto retaining plate.
  12.  
  13. Screw in the shear bolts uniformly until the bolt heads begin to shear.
  14.  
  15. Install the plenum chamber bulkhead, the plenum chamber cover and the windshield wiper arms.
  16.  

  1. Remove the windshield wiper arms, the plenum chamber cover and the plenum chamber bulkhead.

    Click image to see an enlarged view

    Fig. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).

  2.  
  3. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).
  4.  
  5. Remove the bolts with locking pliers.

    Click image to see an enlarged view

    Fig. Insert a screwdriver (A) between protective housing and retaining plate (arrow).

  6.  
  7. Insert a screwdriver between the protective housing and the retaining plate.

    Click image to see an enlarged view

    Fig. Use screwdriver (A) to pry protective housing upward, and then pull if off sideways from retaining plate (arrow)

  8.  
  9. Use screwdriver to pry the protective housing upward, and then pull if off sideways from the retaining plate.

    Click image to see an enlarged view

    Fig. Release and pull off front connector (1) from ECM and pry retaining tab (2) slightly open.

  10.  
  11. Release and pull off the front connector from the Motronic Engine Control Module (ECM).
  12.  
  13. Pry the retaining tab slightly open.
  14.  
  15. Then, push the Motronic Engine Control Module (ECM) out of retainer.
  16.  
  17. Release the rear connector from the Motronic Engine Control Module (ECM) and pull it off.
  18.  

To install:

  1. Connect the rear connector to the Motronic Engine Control Module (ECM) and lock it into place.
  2.  
  3. Push the Motronic Engine Control Module (ECM) onto retaining plate.
  4.  
  5. Connect the front connector to the Motronic Engine Control Module (ECM) and lock it into place.
  6.  
  7. Check whether the new control module identification matches the old control module identification.
  8.  
  9. Perform function "Replacing control module" using the vehicle diagnosis and service information system.

    Click image to see an enlarged view

    Fig. Push protective housing (2) onto retaining plate, and screw in shear bolts (1) uniformly until the bolt heads begin to shear.

  10.  
  11. Push the protective housing onto retaining plate.
  12.  
  13. Screw in the shear bolts uniformly until the bolt heads begin to shear.
  14.  
  15. Install the plenum chamber bulkhead, the plenum chamber cover and the windshield wiper arms.
  16.  

  1. Remove the windshield wiper arms, the plenum chamber cover and the plenum chamber bulkhead.

    Click image to see an enlarged view

    Fig. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).

  2.  
  3. Cut the heads of shear bolts so that two parallel surfaces remain (arrows).
  4.  
  5. Remove the bolts with locking pliers.

    Click image to see an enlarged view

    Fig. Insert a screwdriver (A) between protective housing and retaining plate (arrow).

  6.  
  7. Insert a screwdriver between the protective housing and the retaining plate.

    Click image to see an enlarged view

    Fig. Use screwdriver (A) to pry protective housing upward, and then pull if off sideways from retaining plate (arrow)

  8.  
  9. Use screwdriver to pry the protective housing upward, and then pull if off sideways from the retaining plate.

    Click image to see an enlarged view

    Fig. Release and pull off front connector (1) from ECM and pry retaining tab (2) slightly open.

  10.  
  11. Release and pull off the front connector from the Motronic Engine Control Module (ECM).
  12.  
  13. Pry the retaining tab slightly open.
  14.  
  15. Then, push the Motronic Engine Control Module (ECM) out of retainer.
  16.  
  17. Release the rear connector from the Motronic Engine Control Module (ECM) and pull it off.
  18.  

To install:

 
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