DescriptionAn automatic system manages the passenger compartment climate control, i.e. temperature and ventilation with recirculation and air flow orientation, with separate management of the temperature for the left and right hand sides of the passenger compartment. A dedicated control unit manages system operation by controlling:air temperature at the driver/passenger vent;Air distribution to the vents.fan speed (varies continuously);activation of the compressor (air cooling circuit);activation of air recirculation;the MAX-DEF fast defrost function (i.e. a set of actions which allow both the windscreen and the rearscreen to be demisted quickly);The control unit sets the above parameters in order to adjust passenger compartment temperature to the required level. The system controls are located outside the control unit housing. The following parameters/functions can be modified manually:fan speed;distribution direction;compressor disablement;defrosting/demisting:recirculation.Manual selections always take precedence over automatic selections and are stored until the user deliberately cancels the command, allowing the automatic device to take control over the relevant function. The control unit downloads information on interior and exterior temperature and climatic conditions via special sensors.exterior temperature sensor, locate on the driver's side door mirror. The sensor reading is downloaded by a control unit on the door and filtered as necessary; it is then sent via the CAN network to the climate control system ECU (to instrument panel and other appliances).lower mixed air temperature sensor (right and left);upper mixed air sensors (right and left);passenger compartment temperature sensor;sunlight sensor, which measures the sun's rays on the windscreen;exhaust gas presence sensor (A.Q.S.: Air Quality Sensor):supplies a signal when the air pollution index exceeds a preset level of harmfulness. This signal turns on the recirculation to prevent polluted air entering the passenger compartment;demisting sensor, which detects the presence of water droplets (mist) on the inner surface of the windscreen; this information turns on the relevant demisting strategy., which alters the air and ventilation distribution pattern.After processing the information, it adjusts passenger compartment air intake speed by means of the fan motor and air temperature by means of two mixer actuators (one for the right side and one for the left). It also controls flow distribution via another actuator and - lastly - the interior/exterior air recirculation function via a final actuator. When required, the ECU automatically activates the cooling circuit and dehumidifies the air by operating the air conditioner compressor 3023557SeeE6021COMPRESSOR ENGAGEMENT .
Functional description Climate control control unit M70 is supplied when the ignition is turned on (INT/A) at pin 25 of a line protected by fuse F31 from underfacia junction unit B2 . ; it is supplied directly at pin 31 from a line protected by fuse F39 of underfacia control unit B2 . The supply for lighting the controls with the side lights on reaches pin 24 from the line protected by fuse F35 of underfacia control unit B2. Pin 21 of M70 is earthed. Control unit M70 is also connected to sensors K87 (right lower treated air - connector B - and left - connector A), K88 (right upper treated air - connector B - and left - connector A); these sensors receive a reference earth from pin 32 and send signals to pins 19, 20, 29 and 30 of M70 . Passenger comparment air sensor K89 also receives a reference earth from pin 32 and sends a signal to pin 37 of M70 . Sensor K89 is fitted with a fan motor controlled by the ignition so that the temperature reading is not affected by the motionless and thus warmer air inside the dashboard. The solar ray sensor K90 informs the control unit of the heat coming from rays: it receives a 5V supply from pin 38 control unit M70 and gives out two signals: to pin 39 for the right area and to pin 40 for the left area. The exhaust gas presence sensor (A.Q.S.) K64 supplies a recirculation control signal when the air pollution exceeds pre-set levels: it is supplied at pin 1 from the line controlled by the ignition (INT/A) protected by fuse F31 of underfacia control unit B2 . pin 2 is earthed and pin 3 sends a signal to pin 27 of M70 . Demisting sensor K03 is supplied at pin 2 of ignition-operated line (INT) protected by fuse F49 of underfacia control unit B2 ; Pin 1 is earthed and pin 3 sends a signal to pin 28 of M70 . The air conditioning system is equipped with one recirculation actuator ( N82 ), two air blending actuators (N78 and N79) and two air districution actuators ( N81 and N83 ). Recirculation actuator N82 is controlled by control unit M70 , via pins 1, 2, 3 and 4. Mixing actuators N78 and N79 are controlled from control unit M70 via pins 5, 6, 7, 8 and 11, 12, 13 14 respectively. Distribution actuator N80 is controlled from control unit M70 from pins 15, 16, 17 and 18. An electronic governer M72 controls fan N85 at different speeds via an earth command: this is ignition-operated (INT/A) from a line protected by fuse F31 of underfacia control unit B2 . It receives a control signal from pin 33 of the control unit and returns a feedback signal to pin 9 of M70 . Fan N85 is supplied directly from a line protected by fuse F5 of engine bay control unit B1 . Pin 36 of M70 controls activation of compressor 3023557SeeE6021COMPRESSOR ENGAGEMENT .
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213025802-7040A37fuse box cover - r r1. Disconnect the electrical connections at the front (1a, 1b, 1c,1d, 1e, 1f).2. Undo the bolts fixing the control unit.3. Undo the bolts shown fixing the dashboard cover.2004865
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Ensure that the ignition key is in the OFF position, then disconnectthe negative battery terminal (-).2. Open the maxi fuse box cover.3. Undo the bolts securing the 'maxi-fuse' box to the battery.4. Loosen the bolt fixing the battery terminal (+).5. Release the maxi fuse box from the battery and move it to theside.2004975
5530B14
Follow these precautions:769768768
5530B18
Follow these precautions.769On batteries with an opticam hydrometer,electrolyte level and battery charge status can be monitored qualitativelyby examining the indicator colour: a light, bright colour indicates low electrolytelevel: top up with distilled water;a dark colour without a green area in thecentre indicates that the electrolyte level is correct but chargeis low: recharge the battery; a dark colour with a green area in themiddle indicates that both electrolyte level and charge status arecorrect: no action is necessary. For further details, see DESCRIPTION ANDOPERATION - 5580.768Proceed as follows.Check the battery voltage without loadusing the test device recommended by the Service outlets (e.g. 'MICRO360'). Depending on the voltage values measured,which define the state of charge of the battery, proceed as follows:If the voltage without load is less than12.10 V, replace the battery (see op.). 5530B10).If the voltage without load is over 12.10V but less than 12.50 V, recharge the battery (see op. 5530B14).If the voltage without load is over 12.50V, the battery is efficient.If necessary, top up the electrolyte asfollows.Carefully remove the cap strip.Top up with distilled and deionized water,taking care not to allow electrolyte to splash out.768
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Place the vehicle on a lift.Open the bonnet lid.1. Release the retainers (1a) and remove the cover (1b).2004980
5530B40
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.1. Release the retainers (1a) and remove the cover (1b).2004986
5530B52
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Proceed with removal 3025534-5530B10battery - r+r .1. Remove the relay/fuse box cover.2. Undo the nut (2a) and disconnect the earth lead (2b) from therelay-fuse box.2004990
5530B60
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213025534-5530B10battery - r+r1. Remove the battery drip tray.2. Unscrew bolts (2a) and loosen bolt (2b) securing the batterycradle.3. Move the battery cradle aside.4. Release the belt retaining stud.5. Remove the belt.2005002
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Release and gently extract the switch unit.2. Disconnect the electrical connections.3. Recover the switch unit.2005147
7005M14
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Unscrew the bolt.2. Gently extract the switch unit and control unit.3. Disconnect the electrical connections (3a, 3b).4. Recover the switch unit and control unit.2005148
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213025685-7005R30electrically controlleddoor mirror (one) - r+r (left).1. Undo the lower bolts.2. Move the rear view mirror assembly slightly.3. Remove the outside air temperature sensor from its housing.4. Disconnect the electrical connections for the sensor from theconnector.5. Cut the retaining band and remove the wiring and sensor.2004693
5010D27
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213025797-7040A12removable box on facia- arrangeRemove the radio.1. Unscrew the bolts2. Extract the control unit/controls without disconnecting the electricalconnections.2004694
5010D28
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213025803-7040A65passenger compartmentbox lock , one , r r1. Rotate the sensor in an anti-clockwise direction and extractit.2. Disconnect the electrical connection for the sensor (2a, 2b).2004696
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Release the sensor from the retainers.2. Disconnect the electrical connections.3. Recover the sensor.2004697
5010D72
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting21Open the bonnet lid.1. Remove the cover.2. Undo the bolts retaining the windscreen base right trim.3. Release the inner retainers using the special tool.4. Recover the windscreen base right trim.2004698
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Unscrew the motor retaining bolt.2. Disconnect the motor electrical connection.3. Remove the motor (3a) releasing the toothed wheel (3b) from thecam rack.2004835
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Unscrew the motor retaining bolt.2. Disconnect the electrical connections for the motor (2a, 2b,2c, 2d).3. Remove the motor (3a) releasing its connection (3b).2004840
1. Release the retainers for the wiring.2. Undo the upper bolts for the crossmember.3. Undo the lower bolts for the crossmember.4. Move the air conditioning crossmember slightly.5. Undo the bolt and move the earth carrier electrical connection.6. Disconnect the electrical connections.7. Disconnect any other electrical connections and remove the crossmember/airconditioning assembly with the dashboard wiring. 2004756
5040C15
769
5040C24
<anchor>0</anchor><span>Dismantling</span><icon><imageid>20</imageid></icon>1Reassembling213025454-5040D90air conditioner systemwiring bundle - r r1. Undo the bolts fixing the shield for the expansion valve.2. Remove the shield.2004779
5040C30
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Working under the right side of the dashboard, undo the nutsfixing the bulkhead.2. Remove the bulkhead.2004805
5040C34
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect the electrical connections.2. Undo the bolt fixing the fan.3. Rotate the fan and extract it.2004807
5040C44
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Working under the right side of the dashboard, undo the nutsfixing the bulkhead.2. Remove the bulkhead.2004808
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Undo the bolts fixing the shield for the expansion valve.2. Remove the shield.2004815
5040C80
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting211. Disconnect the electrical connection for the air recirculationand intake motor.2. Unscrew the bolt.3. Rotate the air recirculation and intake assembly and remove it.2004824
<anchor>0</anchor><span>Removing</span><icon><imageid>20</imageid></icon>1Refitting213025672-7005E12corner cover of onefront side door, lh or rh r r1. Disconnect the electrical connections for the door mirror.2. Remove the sound inslation.3. Undo the bolts securing the door mirror.4. Remove the door mirror.2005152
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