AIR CONDITIONER - OPERATIONAL DESCRIPTION

1.8, 2.2, 1.9 JTD 8v, 1.9 JTD 16v · RIGHT HAND DRIVE

Manual climate control unit M070 is supplied by an ignition-operated supply (INT and INT/A of the steering lock control unit) at pins 19 and 17 respectively via lines protected by fuses F49 and F31 of under-dashboard junction unit B002. It is supplied directly from the battery at pin 25 via a line protected by fuse F39 of B002.

Pin 23 of M070 is earthed.

Pin 32 of control unit M070 controls activation of supplementary passenger compartment air relay J121 via an earth signal, which supplies an earth signal to control H081.

Fan control H081 drives N085 at different speeds by means of regulator O030: the control signal varies according to the position of the knob and thus the number of resistances it passes through, determining three different voltage signals for fan N085, which thus turns at three different speeds.

Pin 31 of control unit M070 controls activation of maximum passenger compartment air speed relay J041 via an earth signal, which closes to cut out adjustment resistance O030.

The recirculation actuator N082 is operated by the control unit M070 from pins 20 and 22.

Distribution actuator N080 is controlled by control unit M070 from pins 4 and 5. It receives power to control the potentiometer from pin 29 of M070, a reference earth from pin 8 of M070 and sends a feedback signal to pin 27 of M070.

Distribution actuator N081 is controlled by control unit M070 from pins 1 and 21. It receives power to control the potentiometer from pin 13 of M070, a reference earth from pin 7 of M070 and sends a feedback signal to pin 26 of M070.

Fan N085 is supplied directly from the battery via a line protected by relay T8 and protected by fuse F8 in the engine compartment junction unit B001.

Pin 16 of M070 controls the engagement of the compressor.

See E6021 COMPRESSOR ENGAGEMENT

The heated rear window controls are connected to pins 14 and 30 of M070.

See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING

Pin 28 of M070 receives the +light signal for the dimmed lighting of the symbols inside the control unit.

See E2530 INSTRUMENT LIGHTING

AUTOMATIC AIR CONDITIONING, RIGHT HAND DRIVE

Climate control system M070 receives an ignition-operted power supply (INT and INT/A of steering lock control unit) at pins 14 and 13 of connector A respectively via a line protected by fuses F49 and F31 of under-dashboard junction unit B002; it is supplied directly from the battery at pin 11 of connector A via a line protected by fuse F39 of B002.

The control unit M070 is connected, via the CAN line, from pins 1 and 10 of connector A - to the Body Computer M001 and to the other nodes.

Sensors K111 (right lower treated air) and K113 (left lower treated air), K110 (right upper treated air) and K112 (left upper treated air) are connected to control unit M070: these sensors receive a reference earth from pin 17 of connector B and send the relevant signal to pins 18, 1, 2 and 19 of connector B of M070.

Exhaust gas presence sensor (AQS) K064 is supplied directly by the battery via a line protected by fuse F35 of junction unit B002 and sends its signal to pin 6 of the connector of control unit M070.

The solar sensor K090 informs the control unit of the heat coming from the sun''s rays: it receives a reference earth from control unit M070 - pin 9 of connector A - and returns two signal to the control unit: to pin 8 of connector A for the left area and pin 18 of connector A for the right area.

The air conditioning system is equipped with a recirculation actuator (N082), two for air mixing (N078 and N079) and air distribution (N113 and N112).

Recirculation actuator N082) is controlled by control unit M070 from pins 30 and 31 of connector B.

Air mixing actuators N078 and N079 are connected to control unit M070 respectively at pins 9, 10, 25, 26 and pin 11, 12, 27, 28 of connector B; both receive a power supply from pin 29 of connector B of M070.

Air distribution actuators N113 and N112 are connected to control unit M070 respectively at pins 7, 8, 23, 24 and pins 3, 4, 5, 6 of connector B; both receive a power supply from pin 29 of connector B of M070.

Electric fan N085 (with built-in speed regulation electronics) is supplied directly from the battery via a line protected by fuse F2 of engine compartment junction unit B001.

It receives an input signal for control of the various speeds from pin 14 of connector B of M070 and returns a feedback signal to pin 13 of M070.

The sensor which measures the outside temperature is located on the door mirror P060: this is connected to pins 2 and 6 of connector E of driver side door control unit M066, which sends the corresponding signal to the other nodes via the CAN network - pins 15 and 16 of connector B.

Pin 7 of connector A of M070 controls compressor activation.

See E6021 COMPRESSOR ENGAGEMENT

The heated rear window control is connected to pin 4 of connector A of M070.

See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING