Engine coolant temperature sensor (202), E39
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Engine coolant temperature sensor (202), E39
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Engine coolant temperature sensor (202), E39
Informs the control module of current coolant temperature.
The value from the temperature sensor is used for:
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controlling the radiator fans
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determining injection duration for preinjection
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determining injection duration while starter motor cranking
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determining when closed loop should be engaged
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correction of idle speed.
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The temperature sensor is of NTC type.
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202 pin no.
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Signal type
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Description
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A
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Signal
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Connected to ECM pin 24(C).
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B
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Ground
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Connected to ECM pin 8(C).
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Depending on the coolant temperature, the sensor delivers a proportional voltage to the ECM control module E39 (590), pin 8(C). The sensor is powered with +5 V internally from ECM via 1.5 kΩ and is grounded to ECM pin 8(C).
