Engine Control Module (ECM) -J623-, removing

• Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics". Ignition must be switched on.

Fig 1: Locating Control Module Identification With Code Indicated On Display

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On the screen of the vehicle diagnostic, testing and information system VAS 5051, the control module identification and coding - 2  - are displayed.

• Allow control module identification to be displayed and then print it out.
• Remove right cover from plenum chamber.

Position 1 shows the Master ECM -J623- 

Fig 2: Position Of Master ECM -J623-

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Position 2 shows the Slave ECM 2 -J624- 

Fig 3: Identifying Engine Control Module (ECM), Protective Housing, Retaining Tabs & Shear Bolts

Courtesy of VOLKSWAGEN UNITED STATES, INC.

To increase the difficulty with which the ECM connectors can be accessed, the ECM - 1  - is secured in a metal housing - 5  - with retaining tabs - 2  - and shear bolts - 3  - and - 4  -.