Valve Body
Valve Body
Special tools, testers and auxiliary items required
• Torque wrench (V.A.G 1756)
• Torque wrench (V.A.G 1331)
Removing
- Observe general repair notes => [ General Repair Information ] General Repair Information.
- First determine whether a coded radio is installed. In this case, determine anti-theft coding.
- Switch ignition off and disconnect battery Ground (GND) cable.
- Remove oil pan => [ Oil Pan ] Service and Repair.
- Remove oil strainer => [ Oil Strainer ] Service and Repair.
- Draw up a diagram of all sensors and solenoid valves with the corresponding connectors similar to the illustration.
- Before disconnecting harness connectors at sensors and solenoid valves, mark solenoid valve or sensor and the corresponding connector.
• The sketch and markings are absolutely necessary to prevent interchanging of sensor and solenoid valve connections when reinstalling the valve body.
• Interchanged connection could possibly destroy the transmission.
- Carefully pry out retainer tabs of connectors at solenoid valves - 2 - to - 9 - using a small screwdriver and disconnect connectors.
• If a connection is damaged, replace the wiring harnesses or the valve body with solenoid valves.
- Disconnect connectors from hydraulic pressure sensors - 1 - and - 4 -.
- Disconnect harness connectors - 2 - and - 5 -.
- Remove bolts - 3 - for bracket.
• If harness connector is damaged, replace the wiring harness or Transmission Input Speed (RPM) Sensor (G182) or Transmission Output Speed (RPM) Sensor ( G195).
- Remove bolt - 6 -.
- Carefully pull out Transmission Fluid Temperature Sensor (G93) - 7 - together with bracket from valve body.
• For reinstallation, pay attention to mounting of bracket on Transmission Fluid Temperature Sensor (G93).
- Unclip wiring harness at bracket - 8 -.
- Remove selector lever - 1 - on selector shaft.
• Carefully hold selector lever - 1 - in place using pliers - 2 -, so that torque is not transferred onto Multi-Function Transmission Range (TR) Switch (F125).
• Ensure the slide valve - 3 - on valve body, in which the selector lever engages, is not damaged.
- Remove mounting bolts - arrows -, - arrows A - and - arrows B - of valve body in diagonal sequence and carefully remove valve body.
- Remove brackets - 1 - and - 2 -.
3 - Valve body designation, here e.g. A2
• Bolts have various lengths and must be replaced.
• Only marked mounting bolts - arrows - must be loosened.
• When loosening other bolts/screws can affect the function of the valve body or separate valve body.
- When removing valve body, damper piston - 2 - must be secured against falling out if necessary, or removed together with both springs.
Installing
• Routing of lines must be followed exactly so that they are not jammed when installing valve body.
- Route wiring harness - 5 - corresponding to illustration in the recess provided in the transmission.
Distance - a - must be maintained so that wiring harness - 5 - does not touch planetary gear while driving and is therefore damaged.
- Place wiring harnesses - 1 -, - 3 -, - 4 - and - 5 - over edge of transmission according to illustration.
- Secure wiring harnesses to transmission with tape.
- Ensure damper piston - 2 - is installed into transmission in position illustrated.
• If the damper piston - 2 - was removed, it must be cleaned together with both springs => [ (Item 33) Damping plunger ] Valve Body Assembly Overview, => [ (Item 31) Large spring ] Valve Body Assembly Overview, => [ (Item 32) Small spring ] Valve Body Assembly Overview and => [ (Item 33) Damping plunger ] Valve Body Assembly Overview and installed.
- Moisten damper piston and mounting in transmission with ATF
- Insert springs into one another and insert into damper piston.
- Insert damper piston with springs into mounting in transmission.
- In order to secure damper piston from falling out, press it as long as necessary into transmission until valve body is installed.
- Install valve body without force.
- Ensure that wiring harnesses - 1 -, - 3 -, - 4 - and - 5 - are not jammed by valve body.
• Replace all bolts/screws for securing the valve body.
• Note different length of bolts:
Bolt on brackets for wiring harness - 1 - and - 2 - with new bolts hand-tight.
Tighten remaining valve body bolts - arrows -, - arrows A - and - arrows B - hand-tight.
• If wires - 3 -, - 5 - and - 9 - are too short to connect to sensors or to screw on at points designated on the valve body, they have been routed incorrectly or are jammed by the valve body. Valve body must be removed again and wires routed correctly.
• Ensure that wires - 3 -, - 5 - and - 9 - are not jammed.
- Tighten new bolts - arrows -, - arrows A - and - arrows B - to tightening torque => [ (Item 8) Bolt, 8 Nm plus an additional / turn
(90°) ] Valve Body Assembly Overview, starting from inside and working outward.
- Hook wiring harness - 3 - into retainer - 7 - - arrow B -.
- Install selector lever - 2 - to selector shaft - 6 -.
Make sure pin of selector lever - 2 - engages in slide valve- 1 - - arrow A -, slider valve must be positioned accordingly if necessary.
- Install washer - 5 - and nut - 4 - onto selector shaft - 6 -.
• Install the nut so the centralizing shoulder faces the washer and runs into it when installed.
• Wiring harness must be routed under selector lever.
- Tighten nut to tightening torque => [ (Item 30) Nut, 10 Nm ] Valve Body Assembly Overview.
• Carefully hold selector lever - 1 - in place using pliers - 2 -, so that torque is not transferred onto Multi-Function Transmission Range (TR) Switch (F125).
• Make sure that slide valve - 3 - on valve body, in which the selector lever engages, is not damaged.
- Connect connectors to solenoid valves - 2 - to - 9 - according to markings made previously.
• Interchanged connection may possibly destroy the transmission.
• If a harness connector is damaged, wiring harness or valve body must be replaced together with solenoid valves.
- Route wiring harness - 1 - as shown in illustration.
- Connect harness connector - 2 - and - 5 -.
• Counterparts of connector must have the same identification as the respective connector.
- Install bracket to Transmission Fluid Temperature Sensor (G93) - 7 -.
- Insert Transmission Fluid Temperature Sensor ( G93) together with bracket into valve body.
- Tighten bolt - 6 - to 11 Nm.
- Connect connectors vertically to hydraulic pressure sensors - 1 - and - 4 -.
- Tighten bolts - 3 - of bracket for harness connectors - 2 - and - 5 - => [ (Item 14) Bolt, 7 Nm ] Valve Body Assembly Overview.
• If wires are too short to be able to be installed, they were routed incorrectly or are jammed by the valve body. Valve body must be removed again and wires routed correctly.
- Engage wiring harness into bracket - 8 - and route it as depicted in illustration.
- Install oil strainer => [ Oil Strainer ] Service and Repair.
- Install oil pan => [ Oil Pan ] Service and Repair.
- Fill with ATF, check ATF level and top off => [ ATF Level ] ATF Level.
- Connect battery Ground (GND) cable.
- Code radio.
- Initialize electric window regulators, set clock.
- Connect diagnostic operation system ( VAS 5051 A) and advance program until "function/component selection " is displayed => [ VAS 5051, Connecting and Selecting Functions ] 09G Transmission.
- Then press "Powertrain (Repair Group 01; 10 to 26; 28 to 39) ".
- After that "6 Spd. Automatic Transmission 09G".
- Press "01 - On Board Diagnostic".
- Press "Functions".
- Press "Basic setting".