125002466 - E6020 AIR CONDITIONER - FUNCTIONAL DESCRIPTION (Manual Air Conditioning)

Operational description

The climate control system control unit M70receives an ignition-controlled power supply (INT/A) at pin 3 from the line protected by fuse F31 of the junction unit under the dashboard B2.''; receives a direct supply at pin 2 from the line protected by fuse F39 of the junction unit under the dashboard B2.Pin 1 of M70is earthed.The recirculation actuator N82is operated by control unit M70from pins 14, 15, 16 and 17.The mixture actuator N81is operated by control unit M70from pins 23, 24, 25 and 26.The distribution actuator N80is operated by control unit M70from pins 19, 20, 21 and 22.An electronic governor M72activates the fan N85 on an earth command at different speeds: it receives an ignition-controlled power supply (INT/A) from the line protected by fuse F31 of the junction unit under the dashboard B2it receives a control unit input control signal from pin 10 and provides a feedback signal to pin 18 of M70.The fan N85receives a direct supply from the line protected by fuse F5 of the engine compartment junction unit B11.Pin 11 of M70controls the engagement of the compressor    See E6021 COMPRESSOR ENGAGEMENT

Control unit M70 is connected, via the CAN line, from pins 12 and 13 to the Body Computer M1 and to node H44, exchanging the following signals:

• speedometer signal;
• windscreen washer engagement signal for activating recirculation;
• windows and sun roof closing command;
• battery voltage signal;
• heated rear windscreen on signal.