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Fiat MULTIPLA 1.6 16v da 04/02 a 08/03 – AIR CONDITIONING – – Right hand drive – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

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Fiat MULTIPLA 1.6 16v da 04/02 a 08/03 – AIR CONDITIONING – – Right hand drive – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION
Wiring diagram
AIR CONDITIONING - Wiring diagram Fiat MULTIPLA 1.6 16v da 04/02 a 08/03Unlock Lifetime Access for This Car.


AIR CONDITIONING - Wiring diagram Fiat MULTIPLA 1.6 16v da 04/02 a 08/03Unlock Lifetime Access for This Car.

Components
Component codeNameAssembly reference
B1Junction unitB5MAXI FUSE boxB27Fuse power supply ignition operated excl ignition (INT/A)-
B27Fuse power supply ignition operated excl ignition (INT/A)-
C10Left front earth-
C10Left front earth-
D1Front/facia junction-
D8Air conditioning heater front coupling-
D8Air conditioning heater front coupling-
D21Dashboard/air conditioning-heater connection-
D21Dashboard/air conditioning-heater connection-
D030Front door junction left-
D030Front door junction left-
D31Front door junction right-
D31Front door junction right-
E50Instrument panelG45Air conditioner/heater control lightG45Air conditioner/heater control lightG45Air conditioner/heater control lightG45Air conditioner/heater control lightH1Ignition switchH80Climate control system controlsH081Climate control fan control ( AIR CONDITIONING )H081Climate control fan control ( AIR CONDITIONING )H081Climate control fan control ( AIR CONDITIONING )H82Climate control temperature controlI65MAX-DEF function switchI65MAX-DEF function switchJ20Air conditioning compressor activation relay-
J35Interior compartment air electric fan relay-
J36Additional heater relay-
K87Treated air sensorM70Climate control system control unitM72Fan speed transformerM72Fan speed transformerN81Air mixing actuatorN82Air intake actuatorN85Passenger compartment ventilation fanN85Passenger compartment ventilation fanO30Air fan adjustment resistanceO30Air fan adjustment resistanceO30Air fan adjustment resistanceO30Air fan adjustment resistanceR10Multiple tester connection-
Location of components
AIR CONDITIONING - Location of components Fiat MULTIPLA 1.6 16v da 04/02 a 08/03Unlock Lifetime Access for This Car.

Components
Component codeNameAssembly reference
B1Junction unitB5MAXI FUSE boxB27Fuse power supply ignition operated excl ignition (INT/A)-
B27Fuse power supply ignition operated excl ignition (INT/A)-
C10Left front earth-
C10Left front earth-
D1Front/facia junction-
D8Air conditioning heater front coupling-
D8Air conditioning heater front coupling-
D21Dashboard/air conditioning-heater connection-
D21Dashboard/air conditioning-heater connection-
D030Front door junction left-
D030Front door junction left-
D31Front door junction right-
D31Front door junction right-
E50Instrument panelG45Air conditioner/heater control lightG45Air conditioner/heater control lightG45Air conditioner/heater control lightG45Air conditioner/heater control lightH1Ignition switchH80Climate control system controlsH081Climate control fan control ( AIR CONDITIONING )H081Climate control fan control ( AIR CONDITIONING )H081Climate control fan control ( AIR CONDITIONING )H82Climate control temperature controlI65MAX-DEF function switchI65MAX-DEF function switchJ20Air conditioning compressor activation relay-
J35Interior compartment air electric fan relay-
J36Additional heater relay-
K87Treated air sensorM70Climate control system control unitM72Fan speed transformerM72Fan speed transformerN81Air mixing actuatorN82Air intake actuatorN85Passenger compartment ventilation fanN85Passenger compartment ventilation fanO30Air fan adjustment resistanceO30Air fan adjustment resistanceO30Air fan adjustment resistanceO30Air fan adjustment resistanceR10Multiple tester connection-
DescriptionAn automatic system manages the climate control of the passenger compartment, i.e. temperature and ventilation with recirculation and air flow orientation.A dedicated control unit manages system operation by controlling:air temperature at outlets;fan speedactivation of the compressor (air refrigeration circuit);activation of air recirculation;'rapid demisting' function;The control unit sets the above parameters in order to adjust passenger compartment temperature to the required level.The climate control is operated by acting on the three knobs in the dashboard:the left knob controls the mixing of the hot and cold air;the right knob, mechanically operated via a cable, controls the opening of the flaps which regulate the distribution of air flows;the centre knob adjusts the air ventilation.The air recirculation button and the button for switching on the air conditioning compressor are located in the lower part of the control panel.The control unit supplies information on interior and exterior temperature via special sensors.After processing the information, it adjusts passenger compartment air intake speed by means of the fan motor and air temperature by a mixer actuator. It also controls interior air circulation via a specific actuator. When required, the ECU automatically activates the cooling circuit and dehumidifies the air by operating the air conditioner compressor ( 2889470SeeE6021COMPRESSOR ENGAGEMENT ). For more details, 2888280see DESCRIPTION AND OPERATION:5040Cair conditioner box and components . The control panel is lit up when the side lights are on.The fan circuit is protected by a specific fuse, in the junction unit under the dashboard, controlled by the passenger compartment air fan relay, located in the duct/distributor unit.The fan only operates when the ignition is switched ON.
Functional description The climate control control unit M70 receives a supply controlled by the ignition (INT/A) at pin 12 of connector A from the line protected by fuse B27 ; the same line also supplies all the actuators of the system. The direct supply arrives from the battery (maxifuse J/B1 of B5 ) at pin 8 of connector B through fuse F12 of the junction unit B1 . The supply for illuminating the controls with the side lights on reaches the lights G45 from the line coming from the switch for the steering column switch unit H5 and is protected by fuse F3 of B1 . Pin 8 of connector A and pin 4 of connector B of M70 are earthed. Pin2 of connector A signals the outside temperature to the instrument E50 . The sensor which measures the outside temperature is located on the external rear view mirror P61 : the sensor receives a 5 V supply from pin 7 of connector B of M70 and sends the signal to pin 6 of connector A. Control unit M70 is also connected to the treated air sensor K87 which receives a 5 V supply from pin 7 of connector B which sends a signal to pin 1 of connector B of M70 . The fan H81 and temperature H82 adjustment knobs receive a 5V supply and reference earth from the control unit - pins 9 and 7 of connector B - and return a potentiometric signal to pins 3 and 2 of connector B, respectively. The controls for unit H80 contain:the switch for engaging the recirculation, supplied by the line controlled by the ignition INT/A, which sends a signal to pin 12 of connector B of M70 ;the passenger air temperature sensor, connected to pin 7 of connector A of M70 ; the fan motor is constantly supplied (line controlled by the ignition INT/A) so that the temperature measured is not affected by the stationary air under the dashboard. Switch I65 controls the MAX DEF function sending a signal to pin 6 of connector B of M70 and to H80 (which inhibits the recirculation and engages the compressor). The air conditioning system is equipped with two actuators for recirculation ( N82 ) and air mixing ( N81 ). The recirculation actuator N82 is operated by the control unit M70 from pins 10 and 11 of connector A. The mixing actuator N81 is controlled by the control unit M70 from pins 14 and 15 of connector A, receiving a supply and earth for controlling the potentiometer from pins 7 and 9 of connector B and sending a feedback signal to pin 4 of connector A of M70 . The electronic governor M72 operates the fan at different speeds: it receives an input signal from the control unit (from pin 1 of connector A) and transforms it into a variable voltage signal that controls the fan. The supply for the governor is controlled by the ignition (INT/A) from fuse B27 ; it is connected to the earth for the control unit - pin 16 of connector A of M70 . The fan N85 is supplied directly from the battery from the maxifuse line of J/B1 of B5 protected by fuse F12 of B1 , whilst it is controlled at the different speeds for the voltage signal coming from the electronic governor M72 . The control unit M70 is equipped with a self-test system which can be used by connecting the unit to connector R10: it receives signals from pins 10 and 11 of connector B through diagnostic lines L and K. Pin 13 of connector A controls the engagement of the compressor, whilst the request signal reaches pin 5 of connector B 2889470SeeE6021COMPRESSOR ENGAGEMENT .

Junction unit



B001A



B001A



B001C



B001C



B001D



B001E



B001E



B001E



B001F



B001G



B001H



B001H



B001H



B001I



B001I



B001I



B001J



B001J



B001B



B001B



B001B



B001B



B001B



B001B



B001C



B001C



B001C



B001C



B001C



B001C



B001C



B001D



B001D



B001D



B001D



B001D



B001D



B001D



B001E



B001E



B001E



B001G



B001G



B001G



B001H



B001H



B001H



B001H



B001H



B001I



B001I



B001J



B001J



B001B



B001B



B001B



B001C



B001C



B001C



B001D



B001D



B001D



B001H



B001H



B001H



B001I



B001J



Junction unit



B001A



B001A



B001C



B001C



B001D



B001E



B001E



B001E



B001F



B001G



B001H



B001H



B001H



B001I



B001I



B001I



B001J



B001J



B001B



B001B



B001B



B001B



B001B



B001B



B001C



B001C



B001C



B001C



B001C



B001C



B001C



B001D



B001D



B001D



B001D



B001D



B001D



B001D



B001E



B001E



B001E



B001G



B001G



B001G



B001H



B001H



B001H



B001H



B001H



B001I



B001I



B001J



B001J



B001B



B001B



B001B



B001C



B001C



B001C



B001D



B001D



B001D



B001H



B001H



B001H



B001I



B001J



Fuse power supply ignition operated excl ignition (INT/A)



B027



B027



B027



B027



Left front earth



C010A



C010B



C010C



C010C



C010D



C010D



C010A



C010A



C010A



C010A



C010A



C010A



C010A



C010A



Front/facia junction



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001B



D001B



D001B



D001B



D001B



D001B



D001B



D001B



D001B



D001B



D001B



D001C



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001A



D001C



D001C



D001C



D001C



D001C



D001C



D001C



D001C



D001A



D001C



D001C



Air conditioning heater front coupling



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



D008



Dashboard/air conditioning-heater connection



D021



D21



D021



D021



D021



D021



Front door junction left



D030



D030



D030



D030



D30



D030



D030



D030



D030



D030



D030



D030



D030



D030



D030



D030



D030



D030



D030



Front door junction right



D031



D031



D031



D031



D031



D031



D031



D031



D31



D031



D31



D031



D031



D031



D031



D031



D031



D031



D031



D031



D031



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Instrument panel



E050A



E050A



E050A



E050A



E050A



E050B



E050B



E050B



E050B



E050B



E050B



E050B



E050C



E050C



E050A



E050B



E050C



E050C



E050A



E050C



Interior compartment air electric fan relay



J035



J035



J035



J035



Additional heater relay



J036



J036



Treated air sensor



K087



Treated air sensor



K087



Treated air sensor



K087



Treated air sensor



K087



Treated air sensor



K087



Treated air sensor



K087



Treated air sensor



K087



Treated air sensor



K087


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