General Information: General Description

PCM monitors the voltage output signals of the Fuel Level Sensor (FLS) (#1) and the Fuel Sub Sender (#2). The combined resistance of the two sensors in series enables the fuel gage to determine fuel tank level. PCM also uses values from both sensors to determine condition of the EVAP system for leak detection. PCM monitors both fuel level sensors for the conditions of being stuck high or low, and differences between voltages of fuel level sensors. PCM will calculate if voltage deviation of fuel level sensors has exceeded a limit value while driving. This would be interpreted by the PCM as a fault.