911 Targa 4S (997) F6-3.8L (2007)
The actual engine torque has to be compared with a permitted torque calculated out of characteristic maps.
Diagnosis of load sensor monitoring:
Additionally to the diagnosis of the air mass sensor a diagnosis must be done separately in the safety monitoring concept. In the case of measuring a too
small load signal the calculation of a too small actual engine torque in the function monitoring must be prevented.
Diagnosis of engine speed monitoring:
The engine speed has to be monitored separately in the safety monitoring concept, e.g. to prevent a faulty calculation in the monitoring of the actual
engine torque
Diagnosis of accelerator pedal position monitoring:
The calculation of the permitted torque in the torque monitoring is strongly determined through the actual pedal position. The monitoring of the pedal
position prevents a faulty calculation of the permitted torque. The deviation between the both potentiometer-signals of the accelerator pedal is monitored.
If a fault is detected, limp home mode (safety fuel cut off) and idle speed is requested.