Engine Control Module -J623-, REMOVING AND INSTALLING: Removing

WARNING: This page is about a different car, the 2016 Audi A8 Quattro and 2015 Audi A8 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

-- Read the adaptation values for the fuel injector and ash content before removing the Engine Control Module -J623-. Use Vehicle Diagnostic Tester.

The fuel injector adaptation values of the old (faulty) Engine Control Module (ECM) can be stored and read as a file in the Vehicle Diagnostic Tester with Guided Fault Finding or Guided Functions .

-- Switch off the ignition after saving the file and remove the key.

NOTE:

If the injector adaptation values from the faulty ECM are no longer readable, they must be manually entered into the new engine control module.

-- Remove the plenum chamber cover -2-. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

Fig 1: Identifying Seal Near Plenum Chamber Cover

Courtesy of AUDI OF AMERICA, LLC

-- Remove the tower brace. Refer to TOWER BRACE, REMOVING AND INSTALLING .

Fig 2: Identifying Tower Brace

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-- Open the clamps -arrows- and remove the Engine Control Module -J623- -2-.

Fig 3: Component Location Engine Control Module -J623-

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Ignore items -1, 3 and 4-.