Hydraulic control module, removing and installing

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NOTE:

Observe general repair notes → Repair instructions .
Rules of cleanliness for working on automatic transmissions → Rules for cleanliness when working on transmission .
Always replace a dirty or faulty hydraulic control module.

Removing

Remove end cover → 38 - AUTOMATIC TRANSMISSION - GEARS, HYDRAULIC CONTROLS .
Remove Transmission Control Module (TCM) J217 → Transmission Control Module (TCM) J217 , removing and installing .

Fig 1: Identifying Catch Of Selector Shaft, Spring & Roller

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Pull slider for selector lever position - C - downward out of bearing hole of hydraulic control module.
Disengage spring - A - from selector shaft - D -.

Fig 2: Coating New O-Rings On Hydraulic Control Module With ATF

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts - arrows - and remove hydraulic control module.

CAUTION: The hydraulic control assembly must not under any circumstances be supported on the long pump shaft on the back side or raised up. Otherwise, the blades inside the vane pump will be crushed and the pump damaged.

Installing

Install in reverse order of removal, note the following:

NOTE:

Replace gaskets and O-rings.

Fig 3: Identifying Axial Sealing Elements, Cover, Selector Shaft & Shifting Cam

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Replace axial sealing elements - A - (qty. 4) and - B -.
Coat axial sealing elements with ATF before installing.

Axial sealing elements - A - must be inserted into mounts with smaller diameter facing transmission.

Install cover - C - , while doing so note locating tab.

Locating tab on rear side of cover must be inserted into small hole on transmission surface.

Push lever for selector shaft - 2 - completely toward front until it stops so that shifting cam - 1 - stands almost vertically (with slight tilt toward right).

Fig 4: Pressing Control Piston On Rear Side Of Hydraulic Control Module Completely Inward Until It Engages Into Assembly Spring

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Press control piston - B - on rear side of hydraulic control module completely inward (left) until it engages into assembly spring - A -.
Insert hydraulic control assembly into transmission. Align unit properly to fit without jamming.

NOTE:

When installing control module, make sure that shifting cam (item 1 in Fig 3 ) engages into free groove - arrow - on control piston - B -.

Fig 5: Coating New O-Rings On Hydraulic Control Module With ATF

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Hand-tighten bolts - arrows -. Bolt - arrow 1 - is shorter than the other two bolts.
Check that cover is properly mounted.

Locating tab - B - must be inserted into hole intended for it on the transmission.

Check function of control piston

Fig 6: Moving Selector Shaft At Detent Plate

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Move selector shaft at detent plate - C - or at lever for selector shaft several times toward left and right.

When doing this, control piston - B - must travel outward and inward accordingly - arrow -.

Fig 7: Pressing Control Piston On Rear Side Of Hydraulic Control Module Completely Inward Until It Engages Into Assembly Spring

Courtesy of VOLKSWAGEN UNITED STATES, INC.

If control piston does not move, shifting cam has not engaged into groove - arrow - at control piston on rear side of hydraulic control module. In this case:

Remove hydraulic control module once again and insert again.

Fig 8: Coating New O-Rings On Hydraulic Control Module With ATF

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Tighten bolts - arrows -.

Installing slider for selector lever position

Fig 9: Identifying Catch Of Selector Shaft, Spring & Roller

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Connect roller - B - with collar downward onto slider for selector lever position - C -.
Engage spring - A - into selector shaft - D - and slider for selector lever position.
Slide slider for selector lever position into bearing hole in housing of hydraulic control module.

NOTE:

For the sake of illustration, transmission is shown without hydraulic control module.

Fig 10: Identifying Axial Sealing Elements, Cover, Selector Shaft & Shifting Cam

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Shift lever for selector shaft - 2 - toward front and rear until stop:

Fig 11: Identifying Catch Of Selector Shaft, Spring & Roller

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Detent plate - arrow - moves toward front or toward rear.
When doing this, it must allow the roller - B - to be engaged in the individual notches.
Slider for selector lever position - C - moves in steps toward front or rear.
Roller must be installed with collar facing downward so that it cannot be pulled off upward.

Clean selector shaft → Selector shaft, cleaning .
Insert Transmission Control Module (TCM) J217 with new O-rings → Transmission Control Module (TCM) J217 , removing and installing .
Install end cover → 38 - AUTOMATIC TRANSMISSION - GEARS, HYDRAULIC CONTROLS .
Fill with ATF → ATF, filling for ATF flushing process .

After installing transmission, check ATF level and correct → 37 - AUTOMATIC TRANSMISSION - CONTROLS, HOUSING .

Torque specification

Component	Nm
Hydraulic control module to transmission housing	10