Valve Body: Service and Repair
Valve Body
Removing
- Turn off the ignition and disconnect the battery ground cable.
- Remove the transmission fluid filter. Refer to => [ Transmission Fluid Filter ] Service and Repair.
- Make a sketch, identical to the illustration, of all the sensors and solenoid valves and their connectors.
- Mark the solenoid valve and/or sensors and their connectors before disconnecting them.
It is absolutely required to draw or take a picture and to make identifying marks so that the connectors for the solenoid valves/sensors cannot be interchanged unintentionally when reinstalling the valves/sensors and valve body.
Confusing the connectors could cause damage to the transmission.
- Carefully pry out the connector tabs on the solenoid valves - 1 through 8 - using a small screwdriver and then disconnect the connectors.
The wiring harness or the valve body with the solenoid valves must be replaced if one of the connectors gets damaged.
- Disconnect the connectors - A and B -.
- Remove the bracket for the connectors - 1 and 2 -.
- Remove the transmission fluid temperature sensor - 3 - from the valve body.
- Disengage the wiring harnesses from the brackets - arrows -.
- If equipped, bend back the locking plate tabs - arrows - on the shift lever.
- Remove the shift lever - 1 - from the selector shaft.
- When doing this, hold the shift lever - 1 - secure with pliers - 2 - so that it does not turn when removing the multifunction transmission range switch.
- Make sure the slide - 3 - on the valve body in which the shift lever engages is not damaged.
The valve is very sensitive. Even minor damage leads to malfunction.
- Always slide the valve into the body, secure it against falling out and never exchange it.
The valve body bolts to the transmission housing have different lengths and must be replaced.
Only the indicated bolts - arrows - may be loosened.
When loosening the other bolts, the function of the valve body can be influenced or the valve body splits up.
- Remove the brackets - 1 and 2 -.
- Loosen the valve body bolts - arrows -, - arrows A - and - arrows B - diagonally and then remove the valve body.
- 3 - is the valve body description, for example, A2
- When removing the valve body, pay attention to the piston - 2 -.
- Remove the piston - 2 - with spring.
Installing
- Observe the correct routing of the wires so that they do not get pinched when installing the valve body.
- Route the wiring harness - 5 - into the transmission 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 wiring harnesses - 1, 3, 4 and 5 - lay over the edge of the transmission as illustrated.
- Attach the wiring harnesses to the transmission with tape.
- Coat the piston - 2 - with ATF and then install it with the spring into the transmission housing, as illustrated.
- Mount the valve body and install 2 bolts hand tight.
• The wiring harnesses - 1, 3, 4 and 5 - must not get pinched by the valve body.
Bolt lengths and locations on the valve body
- Install the remaining bolts and the brackets - 1 and 2 - and tighten the bolts hand tight.
• If the wires are too short to connect to the sensors or to be attached to the valve body, then they were routed incorrectly or they are caught by the valve body. Remove the valve body one more time and route the wires correctly.
• Replace the valve body bolts.
- 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 transmission fluid temperature sensor. For the tightening specification, refer to => [ Fastener Tightening Specifications ] Fastener Tightening Specifications.
- Connect the 8 pin connector according to the marks made on the solenoid valves. Refer to => [ Wire Routing, Connectors and Valve Body Bracket ] Wire Routing, Connectors and Valve Body Bracket.
Confusing the connectors could cause damage to the transmission.
The wiring harness or the valve body with the solenoid valves must be replaced if the one of the connectors gets damaged.
- Connect the bracket for the connectors => [ Bracket for Connectors, Securing the Wires ] Wire Routing, Connectors and Valve Body Bracket. For the tightening specifications, refer to => [ Valve Body Overview ] Valve Body Overview.
- Connect the connectors - items A and B - see the "Wiring Routing and Connectors" in the => [ Wire Routing, Connectors and Valve Body Bracket ] Wire Routing, Connectors and Valve Body Bracket.
- Engage the wiring harness - 3 - in the bracket - 7 - - arrow B -.
- Attach the shift lever - 2 - to the selector shaft - 6 -.
When doing this, make sure the pin on the shift lever - 2 - engages in the slide - 1 - - arrow A -. The slide must be positioned accordingly if necessary.
- Install the washer - 5 - and nut - 4 - on the selector shaft - 6 -.
The collar on the nut must always face the washer and fit into the washer when the nut is tightened.
The wiring harness must be routed underneath the shift lever.
- Tighten the nut on the shift lever - 1 -. For the correct tightening specification, refer to => [ Fastener Tightening Specifications ] Fastener Tightening Specifications.
- When doing this, hold the shift lever - 1 - secure with pliers - 2 - so that it does not turn when installing the multifunction transmission range switch.
- Make sure the slide - 3 - on the valve body in which the shift lever engages is not damaged.
- Bend up the locking plate tabs - arrows - on the nut, if equipped.
- Install the transmission fluid filter. Refer to => [ Transmission Fluid Filter ] Service and Repair.
- Turn off the ignition and disconnect the battery ground cable.
- Fill the ATF and check the level. Refer to => [ Automatic Transmission Fluid Level, Checking and Adding ] Automatic Transmission Fluid Level, Checking and Adding.
- Connect the vehicle diagnostic tester , for example, the (VAS 5051) and select "function/component selection".
- Press "drive".
- After that "6-speed automatic transmission 09G".
- Press "01 - OBD".
- Press "Functions".
- Press "basic setting".