Diagnostic Overview
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.
The ambient-pressure-sensor is monitored continuously in a 100ms-grid with two kinds of diagnostics:
- Electrical diagnostics
It compares the sensor signal voltage with an upper and lower limit to detect short circuit.
- Pressure Plausibility
Electrical failures or influences due to components can generate a malfunction of the ambient-pressure-sensor. A stuck sensor is, for instance, permanently emitting the same value. This kind of error cannot be recorded by the conventional electrical diagnostics, as well as a sensor drift inside the frame of electrical thresholds. Therefore the signal of the ambient-pressure-sensor is additionally checked in comparison to a model.