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