Removing Engine Control Module (ECM)

WARNING: This page is about a different variant/trim than selected.

NOTE:

The two engine control modules look identical. If both engine control modules are removed, they must be marked before removal to prevent them from being interchanged when re-installing.
Master ECM 1: e.g. with a "M"
Slave ECM 2: e.g. with a "S"

Position 1 shows the Master ECM -J623-

Fig 1: Position Of Master ECM -J623-

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Position 2 shows the Slave ECM 2 -J624-.

The removal procedure is the same for both engine control modules.

Fig 2: 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 -.