E 500 (211.070) V8-5.0L (113.967) (2004)
Control Module HVAC: Description and Operation
GF83.40-P-2181-01TT Control and Operating Unit Comfort Automatic Air Conditioning, Task
GF83.40-P-2181-01TT Control And Operating Unit Comfort Automatic Air Conditioning, Task
- 211 up to 31.5.04
- with CODE (581) Comfort automatic air conditioning
Component Identification
The comfort AAC [KLA] control and operating unit (N22/7) is used to control the following:
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Switching the air conditioning system on and off
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Cold/hot interior temperature selection, separate for left and right
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Manual blower control
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Manual air distribution, separate for left and right
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Automatic blower control and air distribution
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Air recirculation mode
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Defrost function
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Rear window heater
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Residual engine heat utilization system
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Remote control for the rear air conditioning
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Activated charcoal filter operation
The comfort AAC control and operating module (N22/7) performs the following actuations:
Via the Control Area Network bus, class B (interior compartment) (CAN B):
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Refrigerant compressor and heat exchanger shutoff motor by the driver-side SAM control unit with fuse and relay module
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Coolant circulation pump by the passenger-side SAM control unit
Via Controller Area Network bus class C (engine compartment) (CAN-C):
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Engine and AC electric suction fan with integrated control via the central gateway control unit, by the CDI control unit (with diesel engines) or the
ME-SFI [ME] control unit (with gasoline engines).
Via local interconnect network (LIN):
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Blower regulator
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Fresh air/air recirculation flaps actuator motor
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Left blending air flap actuator motor
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Right blending air flap actuator motor
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Left defroster vent flap actuator motor
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Right defroster vent flap actuator motor
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Left footwell flap actuator motor
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Right footwell flap actuator motor
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Left center air flap actuator motor
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Right center air flap actuator motor
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Left rear blending air flap actuator motor
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Right rear blending air flap actuator motor
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Heater booster (for engines 271, 628, 646, 647 and 648)
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Control panel rear switch group
The following sensor signals are received by the convenience AAC pushbutton control unit (N22/7):
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Directly: