A/C workings & design

A/C control: automatic

workings & design

auto A/C Control Unit

2 -zone regulation / until 02/2011.

1 ventilation (blower) speed selection +.

2 ventilation (blower) speed selection .

3 windscreen defrost.

4 left side temperature selection.

5 system stop OFF.

6 right side temperature selection.

7 rear window defrost.

8 air mix.

9 A / C activation.

10 auto mode AUTO.

11 air recirculation.

12 monozone mode MONO.

13 display.

auto A/C Control Unit

2 -zone regulation / from 03/2011:

1 ventilation (blower) speed selection +.

2 ventilation (blower) speed selection .

3 windscreen defrost.

4 left side temperature selection.

5 system stop OFF.

6 right side temperature selection.

7 rear window defrost.

8 air mix.

9 A / C activation.

10 auto mode AUTO.

11 air recirculation.

12 monozone mode ZONE.

13 display.

auto A/C Control Unit

3 -zone regulation + auxiliary heater / until 02/2011:

1 ventilation (blower) speed selection +.

2 ventilation (blower) speed selection .

3 windscreen defrost.

4 left side temperature selection.

5 system stop OFF.

6 right side temperature selection.

7 rear window defrost.

8 heater circuit residual REST.

9 air mix / right side.

10 A / C activation.

11 auto mode AUTO.

12 air mix / left side.

13 air recirculation.

14 3-zone regulation / monozone mode MONO.

15 display.

auto A/C Control Unit

3 -zone regulation + auxiliary heater / from 03/2011:

1 ventilation (blower) speed selection +.

2 ventilation (blower) speed selection .

3 windscreen defrost.

4 left side temperature selection.

5 system stop OFF.

6 right side temperature selection.

7 rear window defrost.

8 heater circuit residual REST.

9 air mix / right side.

10 A / C activation.

11 auto mode AUTO.

12 air mix / the both sides.

13 air recirculation.

14 3-zone regulation ZONE.

15 display.

651.911-170

workings & design

diagram caption

Input circuit :

A1 dashboard instrument subsystem / bridge.

B10/4 cabin temperature sensor.

B10/6 temperature sensor of the evaporator.

B10/31 temperature sensor of the blown air / lateral air vent / left side.

B10/32 temperature sensor of the blown air / lateral air vent / right side.

B10/35 temperature sensor of the blown air / lower air vent / left side.

B10/36 temperature sensor of the blown air / lower air vent / right side.

B11/4 temperature sensor of the radiator coolant.

B12 A/C refrigerant high pressure HP sensor.

B14 outside temperature sensor.

B32/3 sunlight sensor.

B82 moisture sensor + temperature of the moisture.

CAN multiplexed network CAN / motor.

LIN multiplexed network LIN.

N3/9 engine control unit – ECU / diesel engine.

N3/10 engine control unit – ECU / petrol engine.

N10/1 control unit / car body systems SAM.

N70 C. U. for cabin lights, sliding roof, remote controls, … located within the rooflight unit.

N70/b1 built-in cabin temperature sensor.

N73/3 control unit / bridge / ignition (anti-theft) lock switch.

N22/7 auto A/C Control Unit.

Multiplexed network :

CAN B multiplexed network / in the cabin.

CAN E multiplexed network / motor.

LIN multiplexed network.

Specificities :

*1 until ->05/2008.

*2 from 12/2009->.

*3 according to the versions.

workings & design

diagram caption

Output circuit :

A9/7 compressor with external control.

A32m1 cabin blower.

A32n1 cabin blower control module.

M2/5 air recirculation motor.

M2/6 air mix motor / left side.

M2/7 air mix motor / right side.

M2/16 defrost flap servomotor.

M16/22 air distribution flap servomotor.

M13/5 heating loop pump.

N3/9 engine control unit – ECU / diesel engine.

N3/10 engine control unit – ECU / petrol engine.

N10/1 control unit / car body systems SAM.

N22/7 auto A/C Control Unit.

N73 control unit / bridge / ignition (anti-theft) lock switch.

R22/3 immersion heater resistance / heater circuit / residual.

Multiplexed network :

CAN B multiplexed network / in the cabin.

CAN E multiplexed network / motor.

LIN multiplexed network LIN.

workings & design

diagram caption

Engine coolant circuit :

M4/7 motoventilator with integrated chopper relay.

N3/9 engine control unit – ECU / diesel engine.

N3/10 engine control unit – ECU / petrol engine.

N22/7 auto A/C Control Unit.

N73 control unit / bridge / ignition (anti-theft) lock switch.

N127 control unit / motor compartment.

Multiplexed network :

CAN B multiplexed network / in the cabin.

CAN E/E1 multiplexed network / motor.

Specificities :

*1 diesel engine.

*2 petrol engine.

*3 diesel engine 1.5 Cdi.

651.911-170

workings & design

diagram caption

Input circuit :

A1 dashboard instrument subsystem / bridge.

B10/4 cabin temperature sensor.

B10/6 temperature sensor of the evaporator.

B10/31 temperature sensor of the blown air / lateral air vent / left side.

B10/32 temperature sensor of the blown air / lateral air vent / right side.

B10/35 temperature sensor of the blown air / lower air vent / left side.

B10/36 temperature sensor of the blown air / lower air vent / right side.

B10/38 temperature sensor of the blown air / rear air conditioning.

B11/4 temperature sensor of the radiator coolant.

B11/12 moisture sensor.

B12 A/C refrigerant high pressure HP sensor.

B14 outside temperature sensor.

B31/1 air quality sensor – AQS.

B32/3 sunlight sensor.

B82 moisture sensor + temperature of the moisture.

N3/9 engine control unit – ECU / diesel engine.

N3/10 engine control unit – ECU / petrol engine.

N10/1 control unit / car body systems SAM.

N70 C. U. for cabin lights, sliding roof, remote controls, … located within the rooflight unit.

N70/b1 built-in cabin temperature sensor.

N73 control unit / bridge / ignition (anti-theft) lock switch.

N22/7 auto A/C Control Unit.

Multiplexed network :

CAN B multiplexed network / in the cabin.

CAN E multiplexed network / motor.

LIN multiplexed network.

Specificities :

*1 until ->05/2008.

*2 from 12/2009->.

*3 until ->05/2010.

*4 according to the versions.

workings & design

Output circuit :

A9/7 compressor with external control.

A32m1 cabin blower.

A32n1 cabin blower control module.

M2/1 rear cabin blower.

M2/5 air recirculation motor.

M2/6 air mix motor / left side.

M2/7 air mix motor / right side.

M2/8 defrost flap servomotor / left side.

M2/9 defrost flap servomotor / right side.

M2/10 air distribution flap servomotor -> floor / left side.

M2/11 air distribution flap servomotor -> floor / right side.

M2/12 air distribution flap servomotor / centre air vent / left side.

M2/13 air distribution flap servomotor / centre air vent / right side.

M2/21 air distribution flap servomotor / four-zones air conditioning.

M2/34 dynamic flap servomotor / air recirculation *.

M2/35 air distribution flap servomotor / rear.

M13/5 heating loop pump.

N3/9 engine control unit – ECU.

N3/10 engine control unit – ECU.

N10/1 control unit / car body systems SAM.

N22/4 rear A/C control.

N22/7 A/C control unit.

N73 control unit / bridge / ignition (anti-theft) lock switch.

R22/3 immersion heater resistance / heater circuit / residual **.

Multiplexed network :

CAN B multiplexed network / in the cabin.

CAN E multiplexed network / motor.

LIN multiplexed network LIN.

Specificities :

* until ->05/2010.

** diesel engine.

workings & design

diagram caption

Engine coolant circuit :

M4/7 motoventilator with integrated chopper relay.

N3/9 engine control unit – ECU / diesel engine.

N3/10 engine control unit – ECU / petrol engine.

N22/7 auto A/C Control Unit.

N73 control unit / bridge / ignition (anti-theft) lock switch.

N127 control unit / motor compartment.

Multiplexed network :

CAN B multiplexed network / in the cabin.

CAN E/E1 multiplexed network / motor.

Specificities :

*1 diesel engine.

*2 petrol engine.

*3 diesel engine 1.5 Cdi.

© Fluxea 2019