Scheme 272
For the Engine circuit diagram (Refer to ENGINE - SCHEMATICS AND DIAGRAMS) .
Theory Of Operation
- Theory of Operation The PCM records the fuel level when the ignition key is turned off and then again when the ignition key is turn back on. This is done to monitor for fuel level increase. If a fuel level increase is detected and the EVAP Leak monitor is run and fails, the Loose Gas Cap DTC will set and the GAS CAP indicator will displayed in odometer to inform the vehicle operator that the cap is off of loose.