Operation CHARM: Car repair manuals for everyone.
Home >> Saturn >> 2004 >> VUE AWD V6-3.5L VIN 4 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Air Temperature Sensor ( Ambient / Intake ) >> Description and Operation
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Air Temperature Sensor ( Ambient / Intake ): Description and Operation

INTAKE AIR TEMPERATURE (IAT) SENSORS

The intake air temperature (IAT) sensor 1 is located in the inlet air duct between the air cleaner and the throttle body. The intake air temperature (IAT) sensor 2 is mounted in the front of the intake manifold just behind the throttle body. The IAT sensors measure the temperature of the air at their respective locations in the intake system. The IAT sensors provide useful air temperature information to the powertrain control module (PCM).




Each IAT sensor is a thermistor-a resistor whose resistance changes as a function of temperature. When the temperature is low, the resistance is high. The resistance decreases as the temperature increases. The IAT sensor is a 2-wire circuit with a reference or signal voltage and a ground coming from the PCM.
pro multis · About Operation CHARM