INTAKE AIR TEMPERATURE (IAT) SENSOR [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)]

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IAT Sensor No.1

Purpose/Function

•  Detects the IAT before it passes through the throttle body as basic information (mainly used to determine the fuel injection amount) and sends it to the PCM as an IAT signal.

Construction

•  Built into the MAF sensor.

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•  A cold resistor has been adopted (as the detecting element) for detecting the IAT.

Operation

•  Sends a signal to the PCM via SENT communication which fluctuates according to the intake airflow amount just after it passes through the air cleaner.

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Fail-safe

DTC No.	Fail-safe function
P0110:00	•  Restricts the upper limit of the engine speed. •  Inhibits the evaporative purge control.
P0112:00	•  Fixes the intake air temperature (for engine control) at 20 °C {68 °F}. •  Inhibits the fuel cut control during shift change.
P0113:00	•  Fixes the intake air temperature (for engine control) at 20 °C {68 °F}. •  Inhibits the fuel cut control during shift change.

IAT Sensor No.2

Purpose/Function

•  Detects the IAT (in intake manifold) after it passes through the throttle body as basic information (mainly used to determine the fuel injection amount) and sends it to the PCM as an intake air temperature signal.

Construction

•  Built into the MAP sensor.

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•  A cold resistor has been adopted (as the detecting element) for detecting the IAT.

Operation

•  Sends the signal, which fluctuates according to the IAT (in the intake manifold), to the PCM.

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IAT sensor No.2 characteristic

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Fail-safe

•  Function not equipped.