RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 6 (1998)
Intake Air Temperature Sensor: Description and Operation
INTAKE MANIFOLD AIR TEMPERATURE (IAT) SENSOR-ECM INPUT
The IAT provides an input voltage to the Engine Control Module (ECM) indicating intake manifold air temperature. The input is used along with
inputs from other sensors for engine protection, fuel timing and fuel control. As the temperature of the air-fuel stream in the manifold varies, the
sensor resistance changes. This results in a different input voltage to the ECM.
Intake Manifold Air Temperature (IAT) Sensor Location
The intake manifold air temperature sensor is installed into the rear of the intake manifold with the sensor element extending into the air stream.
