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

Intake Air Temperature Sensor
The combination, dual function Intake Manifold Air Temperature Sensor/MAP Sensor is installed into the top of the intake manifold.

The combination, dual function Intake Manifold Air Temperature Sensor/MAP Sensor is installed into the top of the intake manifold with the sensor element extending into the air stream.

The IAT portion of the sensor provides an input voltage to the Engine Control Module (ECM) indicating intake manifold air temperature. The MAP portion of the sensor provides an input voltage to the ECM indicating turbocharger boost pressure.



Inlet Air Temperature Sensor
The combination, dual function Inlet Air Temperature/Pressure Sensor is located on the air cleaner (filter) cover.

The Inlet Air Temperature/Pressure Sensor is a combination dual-function sensor.

The sensor element extends into the intake air stream at the top of the air filter housing. Ambient air temperature as well as barometric pressure is monitored by this sensor.

The Engine Control Module (ECM) monitors signals from this sensor.