ML 55 AMG (163.174) V8-5.5L (113.981) (2001)
Air Door Actuator / Motor: Description and Operation
Blend Air Flap Actuator Motor, Purpose
Blend air flap actuator motor, purpose
The blend air flap actuator motor (M16/8) serves for adjustment of the air conditioning ventilation temperature.
Fresh Air/Recirculated Air Flap Actuator Motor, Purpose
Fresh air/recirculated air flap actuator motor, purpose
The fresh air/recirculated air flap actuator motor serves for shutting off the fresh air supply on request
GF83.10-P-2132-02GI Footwell Flap Actuator Motor, Function
GF83.10-P-2132-02GI Footwell Flap Actuator Motor, Function
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with CODE (580a) Automatic air conditioning
Function
Rotating the air distribution switch in the AAC pushbutton control module (N22) actuates the footwell flap actuator motor via the AC bus. The footwell
flap actuator motor (M2/21) controls the footwell flap, which adopts the following positions according to requirements.
Switching logic
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footwell flap closed = 0%
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footwell flap open = 100%
Automatic footwell flap control (Auto button engaged)
The footwell flap is opened depending on the following values
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blending air flap setting
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Coolant temperature
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Evaporator temperature
linear up to 100 % open.
Footwell flap control via pushbutton control module
(Clock type switch setting of air distribution switch)
NOTE: All actuator motors are identical.
If a problem exists, it is possible to retrieve and verify the defined end positions by means of the diagnosis assistant system (DAS) (valuation trip).
After replacing an actuator motor an adjustment run must be performed via the Diagnosis Assistant System (DAS), i.e. the flap OPEN and SHUT limit
positions are defined and retained.
GF83.10-P-2132GI Footwell Flap Actuator Motor, Location / Task / Function
GF83.10-P-2132GI Footwell Flap Actuator Motor, Location / Task / Function
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with CODE (580a) Automatic air conditioning