Component Description For Climate Control Control And Operating Unit - GF83.40-P-3002GN

MODEL 166 as of model year 2016 

MODEL 292 With CODE 580 (Air conditioning) except CODE 494 (USA version) 

With CODE 580 (Air conditioning) and CODE 494 (USA version) 

With CODE 581 (Automatic air conditioning) except CODE 494 (USA version) 

With CODE 581 (Automatic air conditioning) and CODE 494 (USA version) 

With CODE 581 (Automatic air conditioning) and CODE 582 (Rear air conditioning) except CODE 494 (USA version) 

With CODE 581 (Automatic air conditioning) and CODE 582 (Rear air conditioning) and CODE 494 (USA version) 

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 air conditioning control and operating unit.

Task 

The automatic air conditioning control and operating unit performs the following tasks:

• Read in sensors and signals
• Evaluation of input factors 
• Actuation of components 

Read in 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 in via direct lines:

• 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 system))
• Refrigerant pressure sensor (B12)
• Sun sensor (B32/3)

Climate control LIN 

The signals of the air quality sensor (B31) (with CODE 581 (Automatic air conditioning)) are read in via 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 or ME-SFI [ME] control unit)
• Circuit 15 status (from electronic ignition lock control unit (N73))
• Stationary heater button status (N72/1s30) (with code 228 (Stationary heater)) (from SAM control unit)
• Pre-entry climate control button status (N72/1s31) (model 166.063) (from SAM control unit)

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 
• Climate control LIN 1 (LIN B8-1) 
• Climate control LIN 2 (LIN B8-2) 
• Interior CAN 

Direct line 

The following components are actuated via direct lines:

• 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))
• Coolant circulation pump (M13/5)
• Booster blower electronic blower regulator (N29/8) (with CODE 581 (Automatic air conditioning))
• Rear window heater (R1)
• Front evaporator shutoff valve (Y19/3) (model 166.063 or CODE 582 (Rear air conditioner))
• Rear A/C system evaporator shutoff valve (Y19/9) (with CODE 582 (Rear A/C system))
• High-voltage battery cooling expansion valve (Y110) (model 166.063)

Climate control LIN 

The following components are actuated via climate control LIN:

• 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 (Automatic air conditioning))
• Left footwell flap actuator motor (M2/10)
• Left center air vent flap actuator motor (M2/12)
• Right center air vent flap actuator motor (M2/13) (with CODE 581 (Automatic air conditioning))
• Rear blend air flap actuator motor with blocking function (M2/21) (with CODE 581 (Automatic air conditioning))
• Rear air distribution flap actuator motor (M2/35) (with CODE 581 (Automatic air conditioning))
• Left B-pillar air distribution actuator motor (M16/33) (with CODE 581 (Automatic air conditioning))
• Right B-pillar air distribution actuator motor (M16/34) (with CODE 581 (Automatic air conditioning))

Climate control LIN 1 

The following components are actuated over the climate control LIN 1:

• Blower regulator (A32n1)
• Rear air conditioning system electronic blower regulator (N29/2) (model 166.8 with code 582 (Rear air conditioning system))

Climate control LIN 2 

The following components are actuated via climate control LIN 2:

• Electric refrigerant compressor (A9/5) (model 166.063)
• Driver side air vent ionizer (N18/9) (with CODE P21 (Air quality package))

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
• Coolant circulation pump (M13/5) request
• Pre-entry climate control request (model 166.063)