Intake manifold pressure sensor: Description

Under certain conditions the manifold pressure (MAP) sensor is checked for a coherent value against engine speed and throttle opening. These conditions are:

• MAP too low when engine stopped (in these conditions, MAP cannot be lower than the minimum ambient pressure).
• MAP too low at idle speed engine running (in these conditions, the engine cannot run with too low manifold pressure)
• MAP too low at full load for low engine speed (in these conditions, MAP cannot be lower than the minimum ambient pressure)
• MAP too high in deceleration (the engine management system calibration is tuned so that the MAP target value is 200 hPa during deceleration).

In case of error on MAP acquisition, the MAP information will be built up by using engine speed and throttle position information.