MECHATRONIC, Removing And Installing: Removing
The system is under pressure.
- Deactivate the ATF pump and drain the hydraulic pressure reservoir before removal.
-- Using the Vehicle Diagnostic Tester in the Transmission Control Module -J217- empty the ATF pressure reservoir and disable the Transmission Fluid Auxiliary Hydraulic Pump -V552-. Refer to ATF PUMP, DEACTIVATING AND DRAINING THE HYDRAULIC PUMP RESERVOIR .
There is a risk of destroying the transmission control module (Mechatronic) with electrostatic discharge.
- Always discharge "static electricity" before working with connectors or the Mechatronic. Do this by touching a grounded object, for example vehicle ground, the heater or the hoist.
- Do not touch connector terminals in the transmission connector with hands.
Transmission Installed
-- Remove the noise insulations. Refer to NOISE INSULATION, REMOVING AND INSTALLING .
-- Drain the ATF. Refer to the appropriate service information. .
-- Turn off the ignition and remove the key.
-- Disconnect the connector -1- by pressing the locking mechanism -B arrow- and pull the locking bracket -2- in the direction of -arrow A-.
-- Remove the protective cap -arrow-.
-- Remove the transmission fluid pan. Refer to TRANSMISSION FLUID PAN, REMOVING AND INSTALLING .
-- Disconnect the connector using the Assembly Tool: T40305 .
The system is under pressure.
- Deactivate the ATF pump and drain the hydraulic pressure reservoir before removal.
-- Using the Vehicle Diagnostic Tester in the Transmission Control Module -J217- empty the ATF pressure reservoir and disable the Transmission Fluid Auxiliary Hydraulic Pump -V552-. Refer to ATF PUMP, DEACTIVATING AND DRAINING THE HYDRAULIC PUMP RESERVOIR .
-- Loosen the bolts in the sequence -1 to 7- a half turn.
-- Remove the bolts -2 and 5- and install the two : T40199 in their place.
-- Remove the remaining bolts -1, 3, 4, 6 and 7-.
Risk of causing damage to the Mechatronic.
- Only bolts -1 through 7- may be loosened.
- If other bolts are loosened, this may impair the function of the Mechatronic unit or it may come apart.
Tip:
- The Mechatronic fits partially inside the transmission.
- If the Mechatronic must be removed, then a second technician will be needed to keep it from falling. Another alternative, the bolts -1 and 2- can be installed slightly to hold the Mechatronic in place while it is being removed.
-- Remove the Mechatronic.
Risk of causing damage to the Mechatronic.
- Lay the Mechatronic with the bolt head side facing down only.
- A clean work environment is required for working on the Mechatronic.
- Place the removed Mechatronic on a clean surface and cover it. Use foil or lint-free cloths.
-- Seal off the ATF channels with the Cover: T40322/1-4 .