Fiat DOBLO 1.9 JTD 8V Da 10/2000 – AIR CONDITIONING – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

Wiring diagram - AIR CONDITIONING - Fiat DOBLO 1.9 JTD 8V Da 10/2000

AIR CONDITIONING - WIRING DIAGRAM Fiat DOBLO 1.9 JTD 8V Da 10/2000

COMPONENTS - AIR CONDITIONING - Fiat DOBLO 1.9 JTD 8V Da 10/2000

Component code	Name	Assembly reference
B1	Engine compartment junction unit	-
B1	Engine compartment junction unit
B1	Engine compartment junction unit
B2	Junction unit under dashboard	-
B2	Junction unit under dashboard
C10	Front left earth	-
C15	Facia earth, driver''s side	-
D8	Front/air conditioning - heater coupling	-
G45	Air conditioning/heater controls light
H80	Climate control controls
H81	Climate control fan control
K10	4 stage pressure switch	-
K10	4 stage pressure switch
N85	Passenger compartment ventilation fan
N86	Electronic thermostat	-
O30	Passenger compartment air fan adjustment resistor

Location of components - AIR CONDITIONING - Fiat DOBLO 1.9 JTD 8V Da 10/2000

AIR CONDITIONING - LOCATION OF COMPONENTS Fiat DOBLO 1.9 JTD 8V Da 10/2000

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COMPONENTS - AIR CONDITIONING - Fiat DOBLO 1.9 JTD 8V Da 10/2000

Component code	Name	Assembly reference
B1	Engine compartment junction unit	-
B1	Engine compartment junction unit
B1	Engine compartment junction unit
B2	Junction unit under dashboard	-
B2	Junction unit under dashboard
C10	Front left earth	-
C15	Facia earth, driver''s side	-
D8	Front/air conditioning - heater coupling	-
G45	Air conditioning/heater controls light
H80	Climate control controls
H81	Climate control fan control
K10	4 stage pressure switch	-
K10	4 stage pressure switch
N85	Passenger compartment ventilation fan
N86	Electronic thermostat	-
O30	Passenger compartment air fan adjustment resistor

Description - AIR CONDITIONING - Fiat DOBLO 1.9 JTD 8V Da 10/2000

The vehicle climate control system involves a duct/distributor unit with a heater. The air conditioning system includes the heater and has the function of producing cold, dehumidified air by switching on the compressor and the refrigeration system.The climate control is operated by acting on the three knobs in the dashboard:the left knob mechanically controls the mixture flap between 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 electrically controls the ventilation of the air at four different speeds; two versions are available: one with three speeds and one with four speeds;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 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 - AIR CONDITIONING - Fiat DOBLO 1.9 JTD 8V Da 10/2000

The passenger compartment air fan is controlled by the relay R8 housed in the engine compartment junction unit B01 .The supply for the relay contact arrives from the battery at pin 1 of connector A and is protected by fuse F8 , whilst the energizing of the coil is controlled by the ignition (INT/A) by the line protected by fuse F31 (junction unit under the dashboard B02).When the climate control button H80 is pressed, relay R8 directly supplies the fan N85, which operates at different speeds according to the ''load'' applied by the control knob H81 (supplied at pin 1 from the line for fuse F31). Operating the selector varies the number of resistances appiled (voltage divider) altering the fan speed.The frost thermostat N86, which prevents the operation of the air conditioning compressor in case the actual evarporator ''freezes'', is located on the evaporator in the duct/distributor assembly.In positions 1 to 4, the selector H81 , closes an internal contact which enables the engagement of the air conditioning compressor.The control panel has ideograms lit up when the side lights are switched on by lights G45 (A, B, C) supplied through the line protected by fuse F51 of the junction unit under the dashboard B2 .