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Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Electronic Engine Controls - TDV6 3.0L Diesel -- Range Rover/L405) >> Electronic Engine Controls - TDV6 3.0L Diesel >> Electronic Engine Controls (Description And Operation) >> Description And Operation >> Description >> Mass Air Flow And Temperature Sensor

Mass Air Flow And Temperature Sensor

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The air filter housing is located in left front corner of the engine compartment. The Mass Air Flow and Temperature (MAFT) sensor is attached to the air cleaner outlet. The MAFT sensor provides the mass air flow and temperature signal for the Powertrain Control Module (PCM).

The PCM checks the calculated air mass against the engine speed. If the calculated air mass is not plausible, the PCM uses a default air mass figure which is derived from the average engine speed compared to a stored characteristic map. The air mass value will be corrected using values for charge air pressure, ambient air pressure and ambient air temperature.

For additional information, refer to: INTAKE AIR DISTRIBUTION AND FILTERING

The MAFT sensor receive a 12 V supply from the PCM relay in the Engine Junction Box (EJB) and a ground connection via the PCM. If the MAFT sensor fail the PCM implements the default strategy based on engine speed.

In the event of a MAFT sensor signal failure, the following symptoms may be observed:

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