Component Description For Automatic Air Conditioning Control And Operating Unit - GF83.40-P-3000GR
MODEL 166 up to model year 2016
Except CODE 581 (Comfort automatic air conditioning) except CODE 494 (USA version)
| Control element | Controllable function | Operating feedback |
|---|---|---|
| Rear window heater button (N22/7s1) | Rear window heater ON/OFF | Integrated LED |
| Air recirculation mode button (N22/7s2) | Air recirculation mode ON/OFF | Integrated LED |
| "AUTO" button (1) | Automatic mode ON/OFF | Integrated LED |
| Defrosting button (2) | Defrost mode ON/OFF | Integrated LED |
| "OFF" button (3) | Air conditioning On/Off | Display (13) |
| Reduce air volume button (4) | Reduce air volume | Display (13) |
| Increase air volume button (5) | Increase air volume | Display (13) |
| Air distribution button (6) | Change air distribution | Display (13) |
| "A/C REST" button (7.2) | Residual heat utilization or refrigerant compressor ON/OFF | Integrated LED |
| "ZONE" button (8.1) | Accept settings of driver side for passenger side and rear | Integrated LED |
| Left temperature selector wheel (11) | Configuration of specified temperature at left | LED on circumference of selector wheel |
| Right temperature selector wheel (12) | Configuration of specified temperature at right | LED on circumference of selector wheel |
Except CODE 581 (Comfort automatic air conditioning) with CODE 494 (USA version)
| Control element | Controllable function | Operating feedback |
|---|---|---|
| Rear window heater button (N22/7s1) | Rear window heater ON/OFF | Integrated LED |
| Air recirculation mode button (N22/7s2) | Air recirculation mode ON/OFF | Integrated LED |
| "AUTO" button (1) | Automatic mode ON/OFF | Integrated LED |
| Defrosting button (2) | Defrost mode ON/OFF | Integrated LED |
| "OFF" button (3) | Air conditioning On/Off | Integrated LED |
| Reduce air volume button (4) | Reduce air volume | Display (13) |
| Increase air volume button (5) | Increase air volume | Display (13) |
| Air distribution button (6) | Change air distribution | Display (13) |
| "A/C" button (7.1) | Refrigerant compressor ON/OFF | Integrated LED |
| "MAX COOL" button (8.2) | Raise basic ventilation level to 100 %, set specified temperature to "maximum cold" | Integrated LED |
| Left temperature selector wheel (11) | Configuration of specified temperature at left | LED on circumference of selector wheel |
| Right temperature selector wheel (12) | Configuration of specified temperature at right | LED on circumference of selector wheel |
With CODE 581 (Comfort automatic air conditioning) except CODE 494 (USA version)
| Control element | Controllable function | Operating feedback |
|---|---|---|
| Rear window heater button (N22/7s1) | Rear window heater ON/OFF | Integrated LED |
| Air recirculation mode button (N22/7s2) | Air recirculation mode ON/OFF | Integrated LED |
| "AUTO" button (1) | Automatic mode ON/OFF | Integrated LED |
| Defrosting button (2) | Defrost mode ON/OFF | Integrated LED |
| "OFF" button (3) | Air conditioning On/Off | Integrated LED |
| Reduce air volume button (4) | Reduce air volume | Display (13) |
| Increase air volume button (5) | Increase air volume | Display (13) |
| Air distribution button (6) | Change air distribution | Display (13) |
| "A/C" button (7.1) | Refrigerant compressor ON/OFF | Integrated LED |
| "ZONE" button (8.1) | Accept settings of driver side for passenger side and rear | Integrated LED |
| "REST" button (8.3) | Residual heat utilization ON/OFF | Integrated LED |
| "AIR FLOW" button (10) | Select ventilation mode | Display (13) |
| Left temperature selector wheel (11) | Configuration of specified temperature at left | LED on circumference of selector wheel |
| Right temperature selector wheel (12) | Configuration of specified temperature at right | LED on circumference of selector wheel |
With CODE 581 (Comfort automatic air conditioning) with CODE 494 (USA version)
| Control element | Controllable function | Operating feedback |
|---|---|---|
| Rear window heater button (N22/7s1) | Rear window heater ON/OFF | Integrated LED |
| Air recirculation mode button (N22/7s2) | Air recirculation mode ON/OFF | Integrated LED |
| "AUTO" button (1) | Automatic mode ON/OFF | Integrated LED |
| Defrosting button (2) | Defrost mode ON/OFF | Integrated LED |
| "OFF" button (3) | Air conditioning On/Off | Integrated LED |
| Reduce air volume button (4) | Reduce air volume | Display (13) |
| Increase air volume button (5) | Increase air volume | Display (13) |
| Air distribution button (6) | Change air distribution | Display (13) |
| "A/C" button (7.1) | Refrigerant compressor ON/OFF | Integrated LED |
| "ZONE" button (8.1) | Accept settings of driver side for passenger side and rear | Integrated LED |
| "MAX COOL" button (8.2) | Raise basic ventilation level to 100 %, set specified temperature to "maximum cold" | Integrated LED |
| "AIR FLOW" button (10) | Select ventilation mode | Display (13) |
| Left temperature selector wheel (11) | Configuration of specified temperature at left | LED on circumference of selector wheel |
| Right temperature selector wheel (12) | Configuration of specified temperature at right | LED on circumference of selector wheel |
With CODE 581 (Comfort automatic air conditioning) and CODE 582 (Rear air conditioning) except CODE 494 (USA version)
| Control element | Controllable function | Operating feedback |
|---|---|---|
| Rear window heater button (N22/7s1) | Rear window heater ON/OFF | Integrated LED |
| Air recirculation mode button (N22/7s2) | Air recirculation mode ON/OFF | Integrated LED |
| "AUTO" button (1) | Automatic mode ON/OFF | Integrated LED |
| Defrosting button (2) | Defrost mode ON/OFF | Integrated LED |
| "OFF" button (3) | Air conditioning On/Off | Integrated LED |
| Reduce air volume button (4) | Reduce air volume | Display (13) |
| Increase air volume button (5) | Increase air volume | Display (13) |
| Air distribution button (6) | Change air distribution | Display (13) |
| "A/C REST" button (7.2) | Residual heat utilization or refrigerant compressor ON/OFF | Integrated LED |
| "ZONE" button (8.1) | Accept settings of driver side for passenger side and rear | Integrated LED |
| Rear air conditioning button "OFF" (8.4) | Rear air conditioning ON/OFF | Integrated LED |
| "AIR FLOW" button (10) | Select ventilation mode | Display (13) |
| Left temperature selector wheel (11) | Configuration of specified temperature at left | LED on circumference of selector wheel |
| Right temperature selector wheel (12) | Configuration of specified temperature at right | LED on circumference of selector wheel |
With CODE 581 (Comfort automatic air conditioning) and CODE 582 (Rear air conditioning) with CODE 494 (USA version)
| Control element | Controllable function | Operating feedback |
|---|---|---|
| Rear window heater button (N22/7s1) | Rear window heater ON/OFF | Integrated LED |
| Air recirculation mode button (N22/7s2) | Air recirculation mode ON/OFF | Integrated LED |
| "AUTO" button (1) | Automatic mode ON/OFF | Integrated LED |
| Defrosting button (2) | Defrost mode ON/OFF | Integrated LED |
| "REAR OFF" button (3.1) | Rear air conditioning ON/OFF | Integrated LED |
| Reduce air volume button and "OFF" (4.1) | Reduce air volume or air conditioning OFF | Display (13) |
| Increase air volume button (5) | Increase air volume | Display (13) |
| Air distribution button (6) | Change air distribution | Display (13) |
| "A/C" button (7.1) | Refrigerant compressor ON/OFF | Integrated LED |
| "ZONE" button (8.1) | Accept settings of driver side for passenger side and rear | Integrated LED |
| "MAX COOL" button (8.2) | Raise basic ventilation level to 100 %, set specified temperature to "maximum cold" | Integrated LED |
| "AIR FLOW" button (10) | Select ventilation mode | Display (13) |
| Left temperature selector wheel (11) | Configuration of specified temperature at left | LED on circumference of selector wheel |
| Right temperature selector wheel (12) | Configuration of specified temperature at right | LED on circumference of selector wheel |
Location
The automatic air conditioning control and operating unit is located in the instrument panel.
The interior temperature sensor (N22/7b1) is integrated in the automatic climate control and operating unit.
Task
The automatic air conditioning control and operating unit performs the following tasks:
- Reading in of sensors and signals
- Evaluation of input factors
- Actuation of components
Reading in of sensors and signals
The input factors are read in via the following connections:
- Direct line
- Climate control LIN (LIN B8)
- Interior CAN (CAN B)
Direct line
The signals from the following sensors are read via direct lines:
- Evaporator temperature sensor (B10/6)
- Rear air duct air outlet temperature sensor (B10/7)
- Rear air conditioning system evaporator temperature sensor (B10/11) (with CODE 582 (Rear A/C system))
- Left side air vent air outlet temperature sensor (B10/31)
- Right side air vent air outlet temperature sensor (B10/32)
- Left footwell vent air outlet temperature sensor (B10/35)
- Right footwell vent air outlet temperature sensor (B10/36)
- Rear air conditioning system head area temperature sensor (B10/37) (with CODE 582 (Rear air conditioning))
- Refrigerant pressure sensor (B12)
- Sun sensor (B32/3)
Climate control LIN
The signals of the air quality sensor (B31) (with CODE 581 (Comfort automatic air conditioning)) are read in over the climate control LIN.
Interior CAN
The following signals, among others, are read in via interior CAN:
- Vehicle speed (from instrument cluster (A1))
- Coolant temperature (from CDI control unit (N3/9) (diesel engine) or from ME-SFI [ME] control unit (N3/10) (gasoline engine))
- Outside temperature (from SAM control unit (N10))
- Engine speed (from CDI control unit (diesel engine) or from ME-SFI [ME] control unit (gasoline engine))
- Circuit 15 status (from electronic ignition lock control unit (N73))
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.
Actuation of components
The actuation of the components takes place via the following connections:
- Direct line
- Climate control LIN
- Interior CAN
Direct line
The following components are actuated via a direct line:
- A/C compressor regulating valve (A9y1) (except CODE B09 (A/C compressor with magnetic clutch))
- A/C compressor regulating valve (A9/7y1) (with CODE B09 (A/C compressor with magnetic clutch))
- A/C compressor magnetic clutch (A9/7y2) (with CODE B09 (A/C compressor with magnetic clutch))
- Rear window heater relay (F4kB)
- Wiper park position heater relay (F58kS)
- Coolant circulation pump (M13/5)
- Booster blower electronic blower regulator (N29/8) (with CODE 581 (Comfort automatic air conditioning))
- Rear A/C system evaporator shutoff valve (Y19/9) (with CODE 582 (Rear A/C system))
Climate control LIN
The following components are actuated via climate control LIN:
- Blower regulator (A32n1)
- Fresh air/recirculated air flap actuator motor (M2/5)
- Left blend air flap actuator motor (M2/6)
- Right blend air flap actuator motor (M2/7)
- Left defroster flap actuator motor (M2/8)
- Right defroster flap actuator motor (M2/9) (with CODE 581 (Comfort automatic air conditioning))
- Left footwell flap actuator motor (M2/10)
- Right footwell flap actuator motor (M2/11) (with CODE 581 (Comfort automatic air conditioning))
- Left center air vent flap actuator motor (M2/12)
- Right center air vent flap actuator motor (M2/13) (with CODE 581 (Comfort automatic air conditioning))
- Rear blend air flap actuator motor with blocking function (M2/21) (with CODE 581 (Comfort automatic air conditioning))
- Rear air distribution flap actuator motor (M2/35) (with CODE 581 (Comfort automatic air conditioning))
- Left B-pillar air distribution actuator motor (M16/33) (with CODE 581 (Comfort automatic air conditioning))
- Right B-pillar air distribution actuator motor (M16/34) (with CODE 581 (Comfort automatic air conditioning))
- Rear air conditioning system electronic blower regulator (N29/2) (with CODE 582 (Rear air conditioning))
- PTC heater booster (R22/3) (diesel engine)
Interior CAN
The following signals are sent by the automatic air conditioning control and operating unit via the interior CAN, for example:
- Idle speed increase request
- Fan motor (M4/7) request
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
| Wiring diagram for automatic air conditioning (AAC) control unit | MODEL 166 up to model year 2016 without CODE 581 (Comfort automatic air conditioning) | PE83.40-P-2101-97NAA | |
| Wiring diagram for Thermotronic automatic air conditioning (AAC [KLA]) | MODEL 166 up to model year 2016 with CODE 581 (Comfort automatic air conditioning) Sheet 1 | PE83.40-P-2105-97NAA | |
| MODEL 166 up to model year 2016 with CODE 581 (Comfort automatic air conditioning) Sheet 2 | PE83.40-P-2105-97NAB |