Volkswagen Workshop Service and Repair Manuals > Polo Mk4 > Vehicle electrics | Electrical system | Wiring | Control units | Control unit for the on-board electrical systemJ519 | Control unit for the on-board electrical systemJ519

Control unit for the on-board electrical systemJ519 - remove and install

Control unit for the on-board electrical system -J519- - remove and install

Removal:

–	Turn off the ignition and all electrical equipment, and remove the key from ignition.

–	Disconnect the Battery -A- → Chapter.

–	Loosen the fastening screws -arrows- and move away the diagnostic connections -1- until there is enough free space to access the Control unit for the on-board electrical system -J519-.

–	Disconnect the connectors -arrows- for the Control unit for the on-board electrical system -J519-.

Note

All connectors fit in one position only, so that it is not necessary to mark their positions.

–	Tighten the lock -2- slightly upward and remove the Control unit for the on-board electrical system -J519- downward.

Installation:

Installation is performed in reverse sequence to that of removal, observing the following:

Note

After installing the Control unit for the on-board electrical system -J519- it is necessary to perform its coding → Chapter.

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