The climate control system control unit M070 receives an ignition-operated power supply (INT) at pin 39 through the line protected by fuse F51 of the Body Computer M001 (pin 18 of connector C).

It also receives a direct battery supply, at pin 30, via the line protected by fuse F36 of the Body Computer M001 (pin 13 of connector C), whilst it is connected, via pin 40, to the air conditioning unit earth C016.

The climate control system control unit M070 is connected, via pin 7 (power supply) and pin 10 (signal) to the solar sensor K090 (pins 2 and 3 respectively) from which it receives information concerning the solar radiation level.

The climate control system control unit M070 is connected, via pin 5 (power supply) and pin 29 (feedback) to the passenger compartment air fan N085, pins 2 and 1 respectively, to adjust the speed.

The passenger compartment air fan N085 receives a direct battery supply, at pin 4, via the line operated by relay switch T08 (except during starting, "INT/A") and protected by fuse F08 located in the engine compartment junction unit B001.

The additional heater relay switch J036 can be activated by a request coming from pin F of the additional heater control unit M075.

See E6015

The same signal is also sent to pin 28 of the climate control system control unit M070.

The supply line for fan N085, coming from the additional heater relay switch J036 and controlled by the additional heater control unit M075, delivers a direct battery supply and is protected by fuse F04 of the engine compartment junction unit B001 and by fuse F27 of the additional system fuse box B046.

The passenger compartment air fan N085 is connected, via pin 3, to the air conditioning unit earth C016.

The climate control system control unit M070 manages the compressor engagement from pin 37 by sending the corresponding signal to the Body Computer M001 (pin 42 of connector D), which sends this request via the C-CAN to the engine management control unit M010.

For more details,

See E6021

The same signal is sent, depending on the version, either to the conversion socket or to the additional air conditioning system, if present.

For more details,

See E3094

See E6025

The climate control system control unit M070 then manages the mixing, distribution and recirculation of the air, constantly checking the temperature.

In particular, the climate control system control unit M070:

• via pin 11 is connected to pin 14 of the climate control system / air diffuser coupling D120, providing a reference earth for the upper and lower treated air sensors;

• via pin 20 receives the signal from the lower treated air sensor (pin 16 of D120);

• via pin 9 receives the signal from the upper treated air sensor (pin 15 of D120);

• via pins 25, 26, 35 and 36 is connected to pins 5, 7, 8, and 9 of the climate control system / air diffuser coupling D120 for the management of the air mixing function;

• via pins 21, 22, 31 and 32 is connected to pins 10, 11, 12 and 13 of the climate control system / air diffuser coupling D120 for the management of the air recirculation function;

• via pins 23, 24, 33 and 34 is connected to pins 1, 2, 3, and 4 of the climate control system / air diffuser coupling D120 for the management of the air distribution function;

• via pin 38 is connected to pin 6 of the climate control system / air diffuser coupling D120, providing a power supply for all the actuators for the management of the above three functions.

Lastly, the climate control system control unit M070 is connected to the CAN via pins 1 and 2.

    See E1050 CAN CONNECTION LINES

This CAN connection is designed, amongst other things, to measure the outside temperature coming from the outside air temperature sensor fitted on the driver's door mirror P060, measured at pins 52 (earth reference) and 37 (signal) of connector C of the Body computer M001.