Fuel Control

Adaptive fuel control strategy is designed to compensate for variability in the fuel system components. If, during normal vehicle operation, the fuel system is detected to be biased rich or lean, the adaptive fuel control will make a corresponding shift in the fuel delivery calculation. The output of Diagnostic Trouble Codes (DTCs) indicates the adaptive fuel control strategy has reached its rich or lean learning limits.

Whenever an injector or fuel pressure regulator is replaced, Keep Alive Memory (KAM) should be cleared. This is necessary so the fuel strategy does not use the previously learned adaptive values.

To clear KAM, refer to Powertrain Control Module (PCM) Reset.