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DESCRIPTIONThe 2-wire Intake Manifold Air Temperature (IAT) sensor is installed in the air inlet tube with the sensor element extending into the air stream.The IAT sensor is a two-wire Negative Thermal Coefficient (NTC) sensor. Meaning, as inlet air temperatures increase, resistance (voltage) in the sensor decreases. As temperature decreases, resistance (voltage) in the sensor increases.
OPERATIONThe IAT sensor provides an input voltage to the Powertrain Control Module (PCM) indicating the density of the air entering the intake manifold based upon inlet air temperature. At key-on, a 5-volt power circuit is supplied to the sensor from the PCM. The sensor is grounded at the PCM through a low-noise, sensor-return circuit.The PCM uses this input to calculate the following:
The resistance values of the IAT sensor is the same as for the Engine Coolant Temperature (ECT) sensor.
Disconnect the electrical connector (1) from the inlet air temperature (IAT) sensor
I need to know where the sensor is located (intake/intake tube) along with a diagram and the wire colors of the two sensor wires.
Sorry Dave, did not see the whole response!
Hi Dave, can you tell me if the IAT wires are Light Green-White and Dark Blue-Dark Green ?
I had to switch to this format because it would not post my answers to you. Here is a diagram showing where the sensor is. The best way to insure you get the correct colors of the wires is to look at the sensor and get them from it. Chrysler changes harness providers at times and can change the colors.
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