FAQ : 170 : Engine coolant temperature sensor - C4

FAQ

FAQ #170

	Engine coolant temperature sensor
	Engine coolant temperature sensor (1220) The engine coolant temperature sensor informs the ECU about the engine coolant temperature . Role of the injection ECU according to the data received : To adjust the starting flow To adjust the idle speed To obtain an accelerated idle speed which decreases as the engine heats up Description The sensor consists of a CTN -type resistor (negative temperature coefficient resistance) . The more the temperature increases, the more its resistance value is reduced . Electrical features Supply : Injection ECU . Allocation of the connector channels : Channel 1 : Signal Channel 2 : Earth Electrical specifications : Resistance at 20 °C = 6250 ohms Resistance at 80 °C = 600 ohms
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FAQ Posted by	Dave_Retired.
Info	Created: 22 September 2009 Last Updated: 22 September 2009

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