Temperature sensor, engine oil
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Temperature sensor, engine oil
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The task of the temperature sensor is to inform the engine control module of the existing engine oil temperature.
The connections for the temperature sensor are:
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1.
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Signal, engine oil temperature: Pin 1 of the temperature sensor is connected to pin 21 of the engine control module
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2.
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Sensor ground: Pin 2 of the temperature sensor is connected to pin 33 of the engine control module
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The engine oil temperature sensor is located on the front of the oil pan. The sensor is type NTC and if fed 5 V by the engine control module.
Temperature sensor resistance changes with the temperature; sensor resistance is as follows:
20°C (68°F)
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2500 Ohm 6%
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100°C (212°F)
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186 Ohm 6%
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If the oil temperature sensor is shorted to B+, DTC P0198 is generated.
If the oil temperature sensor is shorted to ground, DTC P0197 is generated.
One minute after the engine is started, a check of the oil temperature sensor is ordered. The temperature is then compared with the coolant temperature. When coolant temperature reaches 80°C , the value is stabilised for 3 minutes. If the oil temperature has not reached 50°C by the end of the 3 minutes, DTC P0196 is generated.
System reaction to a fault
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If a DTC is generated, the substitute value +100°C is used.
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For DTC P0198, the read value on the diagnostic instrument is +100°C.
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For DTC P0197, the read value on the diagnostic instrument is +100°C.
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