9-3 Viggen Coupe (9400) L4-2.3L Turbo (B235) HO (1999)
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Control Assembly: Description and Operation
System Overview
System overview
Brief description
Control panel, heater and ventilation, also called MCP (Manual Control Panel) is a system for manual climate control. The control panel consists of three
control knobs for temperature, air distribution and fan speed. The electrically heated rear window and rear-view mirrors, air recirculation and eventual
A/C is controlled with buttons.
The following functions can be controlled manually from the panel:
Temperature
The air-mixing damper is controlled by a control wire.
Depending on the position selected on the heater control, the air-mixing damper directs a certain amount of incoming air through the heater box. The
temperature in the heater box itself is not affected by the position of the temperature control knob.
If the cold air" position has been selected on the control panel, the air-mixing dampers will be closed to prevent the air from reaching the heater box.
Air distribution
The air distribution damper directs the air to the positions for defroster, panel or floor. The knob on the control panel can also be set between the three
main positions. The air is then distributed between the defroster and floor or between the panel and floor.
