Engine oil temperature sensor
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Engine oil temperature sensor
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The task of the temperature sensor is to inform the engine control module of the current engine oil temperature.
The temperature sensor has the following connections
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1.
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Signal, engine oil temperature: Pin 1 on the temperature sensor is connected to pin 86 on the engine control module
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2.
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Sensor ground: Pin 2 on the temperature sensor is connected to pin 93 on the engine control module
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The engine oil temperature sensor is located on the front of the oil pan. It is an NTC type sensor and is powered with 5V from the engine control module.
The resistance of the temperature sensor changes with the temperature. The sensor resistance takes the following values:
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 sensor input is short-circuited to B+, diagnostic trouble code P0195 will be generated.
If the sensor input is short-circuited to ground, diagnostic trouble code P0196 will be generated.
System reaction to a fault
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As soon as the control module detects the fault the substitute value +100°C is used.
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The diagnostic tool reading is -50° when P0195 has been generated.
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The diagnostic tool reading is +200° when P0196 has been generated.
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