Offset Detection

Offset Detection
This part of the monitor executes when the vehicle is idling. When closed loop fuel pump control is executing, a settle timer is incremented. After the counter reaches 5 seconds monitoring can be started. This is to allow the system time to settle after a transition from open to closed loop fuel pump control. Once the counter is greater than 5 seconds the target pressure is checked against the actual fuel rail pressure. If the error is less than the failure threshold a normal counter is started. If the normal counter reaches 1 second, normal judgement is made. If the target to actual error is greater than the failure threshold a failure counter is started. If the failure counter reaches 5 seconds then failure judgement is made.