DSG Transmission Mechatronic (J743) Circuit Boards

DSG Transmission Mechatronic (J743) Circuit Boards

Removing

- Remove Direct Shift Gearbox (DSG(R)) transmission Mechatronic. Refer to => [ DSG Transmission Mechatronic (J743) ] DSG Transmission Mechatronic (J743).

- Place the Mechatronic on a clean, soft surface.

There is a risk of destroying the transmission control module (Mechatronic) with electrostatic discharge.

• Always "discharge" the static electricity. Do this by touching a grounded object, for example vehicle ground, the vehicle or the hoist.








Using an inappropriate tool can damage the Transmission Control Module (TCM) (Mechatronic).

• The Mechatronic must be replaced if the locking mechanism for the connectors gets damaged while unlocking and disconnecting the connectors.

• Use a screwdriver - a - = maximum 3.5 mm to unlock the connector.

- Unlock the connectors - 1 and 2 - on the Mechatronic carefully using a screwdriver - 3 - - arrow A - and disconnect them - arrow B -.






- Loosen the bolts - 1, 2 and 3 - on the small circuit board - A - approximately 5 mm.






- Remove the bolts - 4 and 5 - completely and move the wiring guide to the side.

There is a danger of an insufficient contact connection.

• The contact springs on the circuit board can be connected only one time. A circuit board cannot be used again once it has been removed.

- Pull circuit board 2 just far enough until the contact springs - 2 - on the circuit board are free from the contacts - 1 - on the valves.






- Remove the bolts - 1, 2 and 3 - carefully and remove circuit board 2.

- Loosen the bolts - 1 through 5 - on the large circuit board - B - approximately 5 mm.






There is a danger of an insufficient contact connection.

• The contact springs on the circuit board can be connected only one time. A circuit board cannot be used again once it has been removed.

- Pull the circuit board 1 just far enough until the contact springs - 2 - on the circuit board are free from the contacts - 1 - on the valves.






- Remove the bolts - 1 through 5 - completely and remove circuit board 1.






Installing






- Install a cross-shaped protector - arrow - on the valve contacts:

1. Sub-transmission 1 valve 3 (N435)

2. Sub-transmission 2 valve 3 (N439)


• Install a protector in the transmission if the transmission did not have one installed before.

- Install a rectangular protector - arrow - on the contacts on the remaining valves:






1. Sub-transmission 2 valve 4 (N440)

2. Main pressure valve (N472)

3. Sub-transmission 1 valve 4 (N436)

4. Cooling oil valve (N471)


• Install a protector in the transmission if the transmission did not have one installed before.

- Position the new circuit board 1 - B - carefully on the Mechatronic.






- Install the bolts - 1 to 5 - approximately 2 turns as a guide.

- Push circuit board 1 carefully onto the contacts.

- Install the bolts - 1 to 5 - all the way hand-tight and then tighten them to the tightening specification.

- Position the new circuit board 2 - A - carefully on the Mechatronic.






- Install the bolts - 1, 2 and 3 - approximately 2 turns as a guide.

- Push circuit board 2 carefully onto the contacts.

- Position the wiring guide on the alignment sleeves on the small circuit board.

- Install the bolts - 1 to 5 - all the way hand-tight and then tighten them to the tightening specification.

- Connect the connectors so that they click into place. Install DSG(R) transmission Mechatronic (J743) => [ DSG Transmission Mechatronic (J743) ] DSG Transmission Mechatronic (J743).