Fuel Level Noisy Monitor

Fuel level noisy monitor
Once the fuel level % has changed to satisfy the stuck monitor described above and a few other entry conditions the system will complete a fuel level noisy test in the next available idle period. When the vehicle comes to rest the fuel movement will be allowed to subside and then the output of the fuel level sensor will be monitored for a short period, during this period the output of the fuel level sensor will be integrated and compared to a threshold, which is set to find faulty fuel level sensors. This process is repeated as the fuel level falls. If the failure threshold is exceeded a 1st trip temporary failure flag will be set. A further failure in the next trip will illuminate the MIL.