2753549 - E6020 AIR CONDITIONING - Functional description (Automatic Air Conditioning)
Functional description
The climate control unit M070 receives an ignition-dependent supply at pin 2 of connector B along the line protected by the fuse F49, located in the junction unit under the dashboard B002, and a direct battery supply at pin 1 of connector B along the line protected by fuse F39 located in the body computer node M001. The body computer node M001, from pin 9 connector C, manages the operation of relay T08, which supplies the direct battery supply to the electric motor of the fan N085. The relay, excluded during engine starting, is always energised, as it is connected directly to earth C011 from pin 49 connector D of the engine compartment junction unit B001.The vehicle interior air fan N085, is connected to earth C016 at pin 3. The climate control unit M070 manages the various speeds of the fan N085 from pins 7, 8 connector B.The control unit also provides the supply and earth to all the actuators and sensors connected to it.From connector A, the climate control unit M070:
- from pins 5, 6 provides the supply and earth reference to the actuator for the external air / recirculation flap N082;
- from pins 9, 10, provides the supply and earth reference to the actuator for the air mixer flap N081;
- from pins 11, 12 provides the supply and earth reference to the actuator for the air distribution flap N080;
- at pin 2 provides the enablement to switch on the air mixer flap actuator N081 and the air distribution flap actuator N080;
- at pins 1, 7 receives signals from the air mixer flap actuator N081 and the air distribution flap actuator N080.
- from pin 8 sends the compressor engagement signal to the engine control unit M010 ( See E6021 COMPRESSOR ENGAGEMENT ).
From connector B, the climate control unit M070:
- from pin 5 supplies the anti-frost sensor K086, the bottom mixed air temperature sensor K087 and the top mixed air temperature sensor K088;
- at pin 6 receives the signal supplied by the anti-frost sensor K086;
- at pin 11 receives the signal supplied by the bottom mixed air temperature sensor K087;
- at pin 12 receives the signal supplied by the top mixed air temperature sensor K088.