Fuel Level Sensor: Description and Operation
DESCRIPTIONThis signal is sent from the fuel level sensor installed in the fuel tank and operates the same as other vehicles.
OPERATION
The PCM uses this signal as one of the monitoring conditions for detecting DTC's. For vehicles with Enhanced EVAP systems, if the fuel level is higher than a specified level, the PCM makes the EVAP Tank Pressure Control Solenoid Vacuum Valve operate so as to prevent liquid fuel from flowing from the fuel tank to the EVAP canister. To accomplish this the tank pressure control valve closes off the fuel vapor line.