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Home >> Jaguar >> 2017 >> XJR L >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Electronic Engine Controls - V6 S/C 3.0L Petrol -- XJ/X351) >> Electronic Engine Controls - V6 S/C 3.0 L Petrol >> Description And Operation >> Electronic Engine Controls - System Operation And Component Description (G1772584) >> Manifold Absolute Pressure (Map) Sensor

Manifold Absolute Pressure (Map) Sensor

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The manifold absolute pressure (MAP) sensor allows the ECM to calculate the load on the engine, which is used in the calculation of fuel injection time.

The MAP sensor is installed in the air inlet of the supercharger. The sensor is secured with a single screw and sealed with an O-ring. A three pin electrical connector provides the interface with the engine harness.

If the MAP sensor fails, the ECM adopts a default value of 1 bar (14.5 lbf/in.2 ).

With a failed MAP sensor, the engine will suffer from poor starting, rough running and poor drive ability.

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