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Home >> Audi >> 2010 >> S4 Automatic DCT >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Turbocharger System (Service Information - CPNB)) >> 21 Turbocharger, Supercharger >> Turbocharger >> Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING >> Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING, VEHICLES WITH A TURBOCHARGER >> Removing

Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING, VEHICLES WITH A TURBOCHARGER: Removing

WARNING: This page is about a different car, the 2016 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Follow all the rules of cleanliness.

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Release the cover -3- and swivel it to the side in direction of -arrow-.

GWWA27-10305Courtesy of AUDI OF AMERICA, LLC

-- Connect the :VAS6395A/1  to the positive terminal -2- and to the ground -1- using the :VAS6395/2  .

Procedure for :VAS6395A/1  :

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC

-- Select the software version using the ↑  -5- and ↓  -6- buttons.

-- Press the button -4- to confirm the software version.

Procedure for :VAS6395/1  :

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Check the software version of the :VAS6395/1  :

CAUTION:

Danger of damaging the Turbocharger Control Module 1 -J724-.

  • Make sure the correct software is loaded in the :VAS6395/1  before performing the following procedure:

If the correct software is loaded, the following will be displayed on the :VAS6395/1  (2 seconds after the voltage supply is connected):

  1. > 1. START
  2. 2. NEXT [>]
NOTE:

If the following appears in the display, then incorrect software has been loaded:

1. >TEST

2. LEARN

German market: In this case, download the correct software from the "Audi Dealer Portal under Service" in the "Workshop Equipment" section.

Rest of World: In this case, download the correct software from the "information platform of the importer".

For Both E-Boxes 

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-- Disconnect the Turbocharger Control Module 1 -J724- connector.

-- Connect the :VAS6395/2  on the Turbocharger Control Module 2 -J724- and on the :VAS6395A/1  .

Select on the :VAS6395A/1  display:

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC
  1. > 1. START
  2. 2. NEXT [>]

-- Press the button -4- to continue.

Select on the :VAS6395A/1  :

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC
  1. [OK]
NOTE:

If "[OK]" appears in the display, then the Turbocharger Control Module 1 -J724- adjustment range is OK.

If "FAULT [OK]" appears in the display, tap the side of the Turbocharger Control Module 1 -J724- housing several times with a screwdriver handle and then the button -4- to repeat the test.

-- Remove the bolt -arrow-.

GWWA21-10452Courtesy of AUDI OF AMERICA, LLC
NOTE:

All other bolts visible in the illustration must not be removed.

-- Attach the :VAS6395/6  to the center opening in the bracket for the Turbocharger Control Module 1 -J724- and tighten the bolt to 8 Nm.

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-- Press the button -4- to continue.

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-- While determining the voltage, tap on the side of the Turbocharger Control Module 1 -J724- housing with the handle of a screwdriver until the following appears in the display:

Select on the :VAS6395A/1  display:

  1. X, XXX V
  2. [↑][↓][OK]

-- Write down the voltage.

NOTE:

If "FAULT [OK]" appears or if the voltage is less than 3.3 V or greater than 3.7 V, disconnect the :VAS6395A/1  and repeat the entire procedure. Refer to Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING, VEHICLES WITH A TURBOCHARGER .

If no voltage value can be read out, the turbocharger must be replaced.

Select on the :VAS6395A/1  display:

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC
  1. X, XXX V
  2. [↑][↓][OK]

-- Adjust the Turbocharger Control Module 1 -J724- using the ↑  -5- or ↓  -6- buttons so that the coupling rod is accessible for removal.

-- Remove the circlips -arrows- and disconnect the coupling rod.

GWWA21-10283Courtesy of AUDI OF AMERICA, LLC

Select on the Electronic Unit (E-Box):VAS6395A/1  display:

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC
  1. X, XXX V
  2. [↑][↓][OK]

-- Adjust Turbocharger Control Module 1 -J724- using the ↑  -5- or ↓  -6- buttons so that the bolts for -J724- are accessible.

-- Disconnect the :VAS6395/2  from the Turbocharger Control Module 1 -J724-

GWWA21-10465Courtesy of AUDI OF AMERICA, LLC
CAUTION:

The voltage supply for the :VAS6395A/1  must remain connected.

-- Remove the bolts -1, 2 and 3- and dispose of them.

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NOTE:

All other bolts visible in the illustration must not be removed.

-- Remove the old Turbocharger Control Module 1 -J724- and dispose of it.

CAUTION:

Make sure there are 3 insulating washers between the Turbocharger Control Module 1 -J724- and the bracket.

-- Install the new Turbocharger Control Module 1 -J724- in reverse order of removal. 

-- Install the new screws as follows:

  1. M6 x 15 with Narrow Shaft
  2. M6 x 15 with Narrow Shaft
  3. M6 x 15

-- Only tighten the bolts by hand.

-- Connect the :VAS6395/2  on the Turbocharger Control Module 1 -J724-

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-- Press the button -4- to continue.

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Select on the :VAS6395A/1  display:

  1. > 1. START
  2. 2. NEXT [>]

-- Select "NEXT" using the ↓  button -6-.

-- Press the button -4- to continue.

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC

Select on the :VAS6395A/1  display:

  1. X, XXX V
  2. [OK]
NOTE:

If "FAULT" appears in the display, then replace the new Turbocharger Control Module 1 -J724- again.

-- Press the button -4- to continue.

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC

Select on the :VAS6395A/1  display:

  1. [OK]

-- Press the button -4- to continue.

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Select on the :VAS6395A/1  display:

  1. X.XXX V (Starting Up Voltage)
  2. [OK]

-- Install the coupling rod.

GWWA21-10283Courtesy of AUDI OF AMERICA, LLC

-- Install the lock washers -arrows-.

-- Gently push the Turbocharger Control Module 1 -J724- to the rear in direction of -arrow-, until the lever -1- touches the :VAS6395/6  .

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-- Hold the -J724- in this position.

-- Tighten the bolts -1, 2 and 3- to 5 Nm.

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-- Press the button -4- to continue.

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Select on the :VAS6395A/1  display:

  1. X.XXX V (Starting Up Voltage)
  2. [OK]
NOTE:

If [OK] appears in the display, stop the adjustment. Refer to Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING, VEHICLES WITH A TURBOCHARGER .

If "CHECK" appears in the display, continue as follows.

Procedure, if "CHECK" Appears in the Display:

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Select on the :VAS6395A/1  display:

  1. [<<<]
  2. CHECK

or

  1. [>>>]
  2. CHECK

-- Loosen the bolts -1, 2 and 3- just enough so that is possible to move the Turbocharger Control Module 1 -J724- with slight resistance in the direction specified.

GWWA21-10593Courtesy of AUDI OF AMERICA, LLC

-- Tighten the bolts -1, 2 and 3- to 5 Nm.

-- Press the button -4- to continue.

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Select on the :VAS6395A/1  display:

  1. X, XXX V
  2. [OK]

Complete the Adjustment 

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-- Tighten the bolts -1, 2 and 3- to 10 Nm.

-- Press the button -4- to continue.

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC

Select on the :VAS6395A/1  display:

  1. X, XXX V
  2. [OK]

-- Remove the :VAS6395/6  -arrow-.

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-- Press the button -4- to continue.

GWWA21-10601Courtesy of AUDI OF AMERICA, LLC
NOTE:

If "FAULT" appears in the display, then replace the new Turbocharger Control Module 1 -J724-. Refer to Turbocharger Control Module 1 -J724-, REMOVING AND INSTALLING, VEHICLES WITH A TURBOCHARGER .

Select on the Electronic Unit (E-Box) display:

  1. [OK]

-- Disconnect the connector for the :VAS6395A/1  .

Assembly is performed in reverse order.