4.32.2 Fuel level noisy monitor
Once the fuel level percentage has changed to satisfy the stuck monitor described above and a number of other entry conditions have been satisfied, the system will complete a fuel level noisy test during the next available idle. When the vehicle comes to rest, fuel movement is allowed to subside and the output of the fuel level sensor is monitored for a short period of time. During this period the output of the fuel level sensor is integrated and compared to a failure threshold. This process is repeated as the fuel level falls. If the failure threshold is exceeded a temporary fault will be stored. A further failure in the next trip will cause a permanent fault to be stored, however the MIL will not illuminate.