The intake air temperature (IAT) sensor is a thermistor which changes
value based on the temperature of air entering the engine. A low
temperature produces a high resistance (100,000 ohms at -40°C/-40°F),
while a high temperature causes a low resistance (70 ohms at
130°C/266°F).
The PCM supplies a 5.0 volt signal to the sensor through a resistor in the
PCM and measures the voltage. The voltage will be high when the
incoming air is cold, and low when the air is hot. By measuring the voltage,
the PCM calculates the incoming air temperature. The IAT sensor signal is
used to adjust the spark timing according to the incoming air density.
A common OBD2 computer trouble code is p0113.
value based on the temperature of air entering the engine. A low
temperature produces a high resistance (100,000 ohms at -40°C/-40°F),
while a high temperature causes a low resistance (70 ohms at
130°C/266°F).
The PCM supplies a 5.0 volt signal to the sensor through a resistor in the
PCM and measures the voltage. The voltage will be high when the
incoming air is cold, and low when the air is hot. By measuring the voltage,
the PCM calculates the incoming air temperature. The IAT sensor signal is
used to adjust the spark timing according to the incoming air density.
A common OBD2 computer trouble code is p0113.
| A few related questions and answers |
Where is the IAT sensor on my 1998 pontiac grand am 3.1 v6.
2002 pontiac TRAC OFF light is on the dash and trans shifts hard.
Where is the intake air temperature sensor on my chevy silverado.
How can i fix and clear the service engine soon light p0113.
Intake Air Temperature sensor ( IAT )
Warning Lights
