Valve Body: Service and Repair

Valve Body


Do not run the engine or tow the vehicle when the pan is removed or when there is no transmission fluid in the transmission.

• The valve body and the wiring harnesses can also be removed with the transmission installed.

• Install seals using transmission fluid. Other types of lubricants can lead to faults in the transmission hydraulics.

• Always replace a dirty or faulty valve body.

• Only use lint free cloths

• Check the fluid level after installing the pan. Refer to => [ Transmission Fluid Level, Checking and Filling ] Transmission Fluid Level, Checking and Filling.

Special tools, testers and auxiliary items required

• Torque Wrench (5-50 Nm) (V.A.G 1331)

• Digital Torque Wrench (V.A.G 1756)

Removing

- Remove the transmission fluid filter. Refer to => [ Transmission Fluid Filter ] Service and Repair.

- Disconnect the connector from the solenoid valves.

To unlock the connector housing on the solenoid valves, use a flat head screwdriver with a 2.5 mm diameter shaft.


If a connector or the connector housing are damaged, then the wiring harness or solenoid valve must be replaced.

- Disconnect the connectors, see - items A and B - in the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Remove the brackets (- items 1 and 2 - under "Bracket for Connectors, Securing the Wires" in the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body) for the connectors.

- Disconnect the transmission fluid temperature sensor, see - item 3 - under "Bracket for Connectors, Securing the Wires" in the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body and carefully remove it from the valve body.

- Bend the securing plate - arrows - on the selector lever back.






- Remove the selector lever - 1 - from the selector shaft.






- Hold the selector lever - 1 - steady with pliers - 2 - to prevent transferring the torque onto the multifunction transmission range switch.

- Make sure the valve - A - on the valve body is not damaged.






The valve is very "sensitive". Even minor damage can lead to a malfunction.

- Always slide the valve into the body, secure it against falling out and never exchange it.

- Loosen the bolts - arrows - (quantity 12).







If other bolts are loosened, the valve body will distort.

- Remove the brackets - 1 and 2 -.






- Disconnect the valve body and remove it.

- When removing the valve body, pay attention to the piston - 2 -.






- Remove the piston with the spring.

Installing

To make sure that the wires do not get pinched during installation:

- Route and secure the wires - 1, 3, 4 and 5 - as illustrated.






The distance - a - must be maintained so that the wiring harness - 5 - does not touch the planetary gear and get damaged when the vehicle is being driven.

The valve body is secured with bolts with three different lengths.

- Sort the bolts according to length before installing the valve body.

- Coat the piston - 2 - with transmission fluid and install the spring.






- Install the valve body carefully and secure it using 2 bolts.

Bolt Lengths and Locations on the Valve Body










- Make sure the wires are not pinched.

- Install the remaining bolts and the brackets - 1 and 2 - and tighten by hand.






- Install the transmission fluid temperature sensor and tighten to specification. Refer to => [ Fastener Tightening Specifications ] Fastener Tightening Specifications.

- Connect the connectors (quantity 8) to the solenoid valves. Refer to => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Connect the bracket for the connectors => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body, tightening specifications, refer to => [ Fastener Tightening Specifications ] Fastener Tightening Specifications.

- Connect the connectors see - items A and B - in the => [ Wire Routing, Connectors and Bracket on Valve Body ] Wire Routing, Connectors and Bracket on Valve Body.

- Tighten the valve body bolts working from the inside toward the outside diagonally. Tightening specification, refer to => [ Fastener Tightening Specifications ] Fastener Tightening Specifications.

- Install the selector lever.

- Tighten the nut on the selector lever - 1 -. For the correct tightening specification refer to => [ Fastener Tightening Specifications ] Fastener Tightening Specifications.






- Hold the selector lever - 1 - steady with pliers - 2 - to prevent transferring the torque onto the multifunction transmission range switch.

- Bend the securing plate - arrows - on the nut up.






- Install the transmission fluid filter. Refer to => [ Transmission Fluid Filter ] Service and Repair.

- Fill the transmission fluid and check the level. Refer to => [ Transmission Fluid Level, Checking and Filling ] Transmission Fluid Level, Checking and Filling.

- Connect the vehicle diagnostic tester and move through the selections until "Functions-/component selection" is displayed.

- Press "Drive (Repair Groups 01;10 through.26; 28 through.39)".

- After that "6-speed automatic transmission 09G".

- Press "01 - OBD".

- Press "Functions".

- Press "basic setting".