General Information

Component Location





General Description

The Fuel Level Sensor (FLS) measures the fuel level in fuel tank and its information is used to supply the ECM with information regarding the monitoring condition of the EVAP canister purge system for leak detection. If the fuel level sensor is monitored for high or low stuck or difference between voltage of fuel level sensor and voltage deviation of fuel level sensor is exceeds limited value while driving, this is interpreted by the ECM as a fault.

DTC Description

This function will check the difference between the current fuel level sender voltage and the previous fuel level sender voltage to determine the amount of fuel removed from the tank. This information, coupled with the distance traveled, can determine whether the fuel level sender is functioning correctly, or if it is stuck.
When the Fuel Level Sender fails, it may cause the Evaporative System Diagnostic to function improperly since it relies on Fuel Level in its leak detection algorithm. A failed Fuel Level Sender will also provide misleading Fuel Level information to the driver (in cases where the PCM drives the fuel gauge).
Checking fuel level change under detecting condition, if not only the fuel level difference between current and previous is lower than 0.035 but also odometer difference between present and previous is higher than 200 km, PCM sets P0451. MIL (Malfunction Indication Lamp) turns on when the malfunction lasts till consecutive 2 driving cycle.

DTC Detecting Condition





Specification





Schematic Diagram