Fiat DUCATO 2.3 JTD 16V da 03/05 – HEATER – – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION – WIRING DIAGRAM, LOCATION COMPONENTS, OPERATIONAL DESCRIPTION

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Description - HEATER - Fiat DUCATO 2.3 JTD 16V da 03/05

The vehicle climate is controlled via a duct/distributor unit with heater and controlled by means of three control knobs on the facia.The left-hand knob controls air ventilation at four different speeds by means of an electrical control;the centre knob controls the mechanical warm and cold air mixing flap;the right hand knob controls opening of the flaps that govern air flow distribution mechanically via a cable.The control for different fan speeds is via a resistance partitioner protected against temperature surges by a thermal fuse.A cursor under the knobs on the control unit modulates the recirculation function mechanically via a cable.The control unit is lit with the side lights on.The entire system is protected by dedicated fuses housed in the engine bay and under-facia junction units. Fan activation is governed by a specific relay.The fan can only be activated with the key ON.

Operational Description - HEATER - Fiat DUCATO 2.3 JTD 16V da 03/05

The passenger compartment fan motor N085 receives the +30 direct battery signal along the line protected by fuse F55 located in the junction unit under the dashboard B002.When the climate control fan selector H081 is turned to select first, second or third speed the passenger compartment air fan adjustement resistance O030 receives a reference earth. There is only a direct connection to earth when the maximum speed is selected and the maximum temperature is reached.