SsangYong Actyon Sports II. Manual — part 60

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C. Input/Output for oxygen sensor

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D. Oxygen sensor control

The wide band oxygen sensor uses ZnO2. It produces the voltage by movement of oxygen ions when

there is oxygen concentration difference between exhaust gas and atmosphere.

If a certain voltage is applied to the sensor, the movement of oxygen ions occurs regardless of the

oxygen density. The current generated through this flow of ions, is called pumping current (IP), and the

oxygen sensor measures this value.

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HFM (intake air

temperature)

Cooling fan

module

DSI 6 A/T (ATF

temperature)

Coolant

temperature

sensor

Refrigerant

pressure sensor

Relay box

(12) Cooling fan control

A. Overview of cooling fan and A/C compressor

The cooling system maintains the engine temperature at an efficient level during all engine operating

conditions. The water pump draws the coolant from the radiator. The coolant then circulates through

water jackets in the engine block, the intake manifold, and the cylinder head. When the coolant reaches

the operating temperature of the thermostat, the thermostat opens. The coolant then goes back to the

radiator where it cools. The heat from automatic transmission is also cooled down through the radiator

by circulating the oil through the oil pump. ECU controls the electric cooling fans with three cooling fan

relays to improve the engine torque and air conditioning performance.

For detailed information, refer to Chapter "Air Conditioning System".

B. Components

A/C compressor

D20DTR ECU

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C. Input/Output for cooling fan and A/C compressor