Front Cold Air Door Motor
Front Cold Air Door Motor
• A potentiometer with an adjustment range of 150 ° is installed in this control motor, its part number at the start of production has index "B".
• Mark motor/door connecting elements when removing (danger of swapping with connecting elements of the other actuator motors).
• In the event of fault "Upper or lower limit value exceeded", check connecting element of engine/door, it must be attached to engine accurate to side and there must not be any clearance between actuator mount and connecting element.
• Mark the control motors prior to removing them, follow the correct assignment when installing and the correct part number and index when replacing (the various control motors have different electrical values and are different in the part number index).
• This control motor operates the cold air door (the door is installed in the air channel that goes around the heat exchanger).
Removing
- Switch off ignition.
- Remove glove box.
- Remove right lower center console cover.
- On the right side remove the holder for the instrument panel - A - and the screws - C -.
- Remove the air duct to the front passenger's footwell vent - B -.
- Mark connector - C - to control motor (danger of interchange with other connectors of same construction).
- Disconnect connector - C - from Cold Air Door Control Motor (V197).
- Remove bolts - A - (torque 10 Nm).
- Remove control motor - B -.
- Carefully pry off connecting element - D - with a screwdriver from control motor - B -.
• The connecting element - E - to the door shaft remains on the A/C unit.
• Remove the connecting element - E - to the door shaft => [ Connecting Elements to A/C Unit Doors ] Connecting Elements to A/C Unit Doors.
Installing
Installation is carried out in the reverse order, when doing this note the following.
- Check the position of the control motor shaft - B -, it must be located in the position depicted.
- Attach connecting element - A - on to the shaft of control motor - B -.
• Only install the connecting element - A - in the position where it engages without being forced in. If pretension is needed to insert the connecting element, check the motor shaft - B -. It can be rotated 180°.
• Check connecting element for proper seating, it must engage in motor shaft and there must not be any clearance between actuator shaft and connecting element.
• If motor shaft - B - is not in the position depicted (the connecting piece can only be attached in this position), connect terminals "5" and "6" of the control motor via a 5A fuse to a 12 V battery e.g. using adapter lead => [ Preparing Adapter Cables for Control Motor Actuation ] Preparing Adapter Cables for Control Motor Actuation (or an adapter lead from the Connector Test Kit (V.A.G 1594/C)). Rotate the control motor for as long until the shaft is located in the position depicted (the connecting element can be connected without pretension), the turning direction can be reversed by swapping Plus and Minus.
• Actuator shaft - B - does not have a stop, it rotates continuously when voltage is applied between terminals 5 and 6. Therefore,if the connecting element - A - is connected or cannot be connected, voltage should be applied only when the control motor has been removed in order to bring shaft into the correct position.
• If connecting element - A - cannot be inserted into the control motor without pretension, the shaft may be incorrectly positioned.
- Install the control motor - B -, making sure both connecting elements - D - and - E - are positioned correctly in relation to each other.
• If there are doubts as to whether the connecting elements - D - and - E - are positioned correctly in relation to each other, connect the control motor terminals "5" and "6" to a 12 V battery via a 5A fuse using an adapter cable => [ Preparing Adapter Cables for Control Motor Actuation ] Preparing Adapter Cables for Control Motor Actuation or an auxiliary cable from the Connector Test Set (V.A.G 1594/C). Let the control motor run until it has reached an end position (the direction of rotation can be changed by switching Plus and Minus) and watch both connecting elements while it runs.
- Install the removed components again in reverse order.
- Check the DTC memory for the Climatronic Control Module (J255) A/C control head and erase any faults displayed if necessary.
- Perform a basic setting and output diagnostic test mode on the A/C system.