Fuel System
- Fuel System Similar Conditions Window
An indicator that ABSOLUTE MAP WHEN FUEL SYS FAIL and RPM WHEN FUEL SYS FAIL are all in the same range when failure occurred. This is indicated by switching from NO to YES.
- Absolute MAP When Fuel Sys Fail
Stored MAP reading at time of failure. Tells at what engine load the failure occurred.
- Absolute MAP
A real-time reading of engine load to aid the user in accessing the Similar Conditions Window.
- RPM When Fuel Sys Fail
Stores the engine RPM at time of failure. Informs the user at what engine RPM the failure occurred.
- Engine RPM
A real-time reading of engine RPM to aid the user in accessing the Similar Conditions Window.
- Adaptive Memory Factor
The PCM uses both Short Term Compensation and Long Term Adaptive to calculate Adaptive Memory Factor for total fuel correction.
- Upstream O2S Volts
A real-time reading of O2 sensor to indicate performance of sensor. For example, stuck lean, stuck rich, etc.
- Similar Conditions Window (SCW) Time In Window
The PCM uses this timer to indicate that after all Similar Conditions have been met, if engine has been running good enough in SCW without failure detected. This timer is used to increment a Good Trip.
- Fuel System Good Trip Counter
This trip counter is used to turn off the MIL for fuel system DTCs. A Fuel System Good Trip increment is when engine is in Similar Conditions Window, Adaptive Memory Factor must be less than calibrated threshold and Adaptive Memory Factor must stay below that threshold for a specific amount of time.
- Test Done This Trip
Indicates the monitor has already run and completed during the current trip.