Left Center Vent Motor (V110)
Left Center Vent Motor (V110)
• The Left Center Vent Motor is installed only on vehicles equipped with the "Comfort" A/C system.
• Currently in this vehicle, all motors are identical in construction. During the basic setting, the control motors are assigned and adapted corresponding to the switching sequence of the wiring. If this sequence does not conform the specification, the control motors will adapt incorrectly and the door control will be wrong. Refer to => [ A/C Control Motor Block Diagram ] A/C Control Motor Block Diagram (A/C control motors block diagram)
• Left Footwell Door Motor (V108) and Left Center Vent Motor removing and installing, refer to => [ Left Retaining Plate with Left Footwell Door Motor (V108) and Left Center Vent Motor (V110) ] Left Retaining Plate With Left Footwell Door Motor (V108) and Left Center Vent Motor (V110).
• Depending on the production date, there are different versions of the levers and connections on the A/C unit. Refer to => [ Air Conditioner, Levers and Connecting Elements ] Air Conditioner, Levers and Connecting Elements and the Electronic Parts Catalog (ETKA).
Removing
- Move the driver seat as far back as possible.
- Turn off the ignition.
- Remove the storage compartment under the dash panel on the driver's side.
- Remove the left footwell vent (driver side). Refer to => [ Left Footwell Vents ] Left Footwell Vents.
- Remove the accelerator pedal module.
• The following illustrations show the arrangement of the control motors and their mounting plates on the left side of the A/C with the air channel leading to the left dash panel vent - A - removed for clarity.
• The air guide channel leading the left instrument panel vent - A - is secured by an expanding clip or a screw - B - onto the instrument panel crossmember - C -; the expanding clip or the screw can only be removed when the outer instrument panel shell is removed.
- Carefully loosen the air guide channel leading to the left instrument panel vent - A - from the A/C vent.
- Mark the connector - D - if necessary (to rule out an interchange in the event several connectors are disconnected at the same time).
- Disconnect the connector - D -.
- Remove the screws - C -.
• To remove the screw - C - use ratchet wrench (T40083).
- Press the cam plate - E - toward the A/C and remove the shaft - A - (control motor - B -) from the cam plate - E -.
• The Left Center Vent Motor actuates the connector rod - F - via the cam plate - E - (and with it the door for the left indirect ventilation) and via the lever - G - and via the door left center dash panel vent. If the pin - G - comes out of the cam plate guiding groove - E - while removing the control motor, the left center dash panel vent door will not actuate.
• On RHD vehicles, the cam plate - E - is not driven directly by the control motor shaft - B - ; on these vehicles, the cam plate - E - is actuated by two additional toothed gears - A - and - C -.
• In MY 2008, revised toothed gears - A - and a new bracket were installed as a running change (a revised collar on the toothed gear and a revised hole). Make sure the correct toothed wheel and bracket are installed (these parts are supplied together as a replacement part). Refer to Electronic Parts Catalog (ETKA).
• The connector rod - F - actuates the left door in the center vent
Installing
Installation is carried out in the reverse order while observing the following.
- Check the lever pin - G - and the connector rod pin - F - for correct fit in each guiding groove in the cam plate - E -.
- Insert the shaft - D - of the control motor- B - into the cam plate - E -.
• The control motor does not have a stop; therefore the control motor shaft can be inserted into the cam plate - E - at any position.
- Install the screws - C -.
- Connect the connector - D -.
- Install the wiring harness so that it cannot come in contact with any moving parts (such as the actuating arm).
- Install the removed parts in the opposite order.
- Switch on the ignition.
- Perform a basic setting and the output Diagnostic Test Mode (DTM) on the A/C system using the Vehicle diagnostic tester in "Guided Fault Finding".
• On this vehicle, the control motors are equipped with electronics. During the first basic setting, a new control motor learns its position on the air conditioner and can then be controlled by the Climatronic Control Module (J255) (currently all control motors are identical). Refer to the Vehicle diagnostic tester in "Guided Fault Finding".
• During the basic setting, the control motors are assigned and adapted corresponding to the switching sequence of the wiring. If this sequence does not conform the specification, the control motors will adapt incorrectly and the door control will be wrong. Refer to => [ A/C Control Motor Block Diagram ] A/C Control Motor Block Diagram.
- Check the Climatronic Control Module DTC memory and erase any displayed malfunction if necessary using the Vehicle diagnostic tester in "Guided Fault Finding".