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Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- Discovery Sport/L550) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol >> Description And Operation >> Description >> Manifold Absolute Pressure And Temperature Sensor

Manifold Absolute Pressure And Temperature Sensor

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.
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A single Manifold Absolute Pressure and Temperature (MAPT) sensor is located in the intake manifold. The sensor is secured with a single screw and sealed with an O-ring seal. The sensor provides a voltage signal to the Powertrain Control Module (PCM) relative to the intake manifold pressure and temperature.

The MAPT sensor has a four pin connector which is connected to the Powertrain Control Module (PCM). The connector provides a 5 V reference voltage from the PCM, a pressure and a temperature signal input to the PCM and a ground connection.

The MAPT sensor allows the PCM to calculate the charge air density immediately before it enters to the combustion chamber. This is used to adjust the ignition timing relative to the charge air pressure and to monitor the performance of the charge air cooler.

The MAPT sensor uses a diaphragm transducer to measure the air pressure and a Negative Temperature Coefficient (NTC) thermistor to measure the temperature.

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