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Temperature and Manifold Absolute Pressure Sensor (TMAP)
The TMAP sensor fits directly into the inlet manifold and accurately measures the vacuum from  the engine. The TMAP sensor consists of a temperature sensor and a pressure transducer and therefore replaces the IAT and the MAP sensors.
The TMAP sensor provides the powertrain control module with information relating to inlet manifold vacuum and barometric pressure along with the temperature of the air in the inlet manifold. With the ignition on but without the engine running the sensor reads barometric pressure and when the engine is running, the sensor reads inlet manifold vacuum.
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