Tracker 2WD L4-1.6L VIN 6 (2000)
Fuel Gauge Sender: Description and Operation
The fuel level sensor is located in the fuel tank. The fuel level sensor sends a signal to the Powertrain Control Module (PCM) and the fuel gauge in the
instrument panel. The PCM uses the signal from the fuel level sensor as one of the monitoring conditions for detecting EVAP control system DTCs. The
PCM also uses the fuel level sensor input in order to control the EVAP tank pressure control solenoid vacuum valve. If the fuel level is more than a
specified value, the PCM will operate the EVAP tank pressure control solenoid vacuum valve in order to prevent liquid fuel from flowing into the EVAP
canister from the fuel tank.
The fuel level sensor is located in the fuel tank and is part of the fuel sender assembly. The fuel level sensor, or fuel gauge sending unit, consists of a
float, a float arm, and a variable resistor. The fuel level is measured by the position of the float in the fuel tank. The fuel level sensor indicates the
position of the float to a gauge in the Instrument Panel (IP) and the powertrain control module. When the fuel level changes, the float position changes.
The change in the float position increases or decreases the resistance reading of the variable resistor. The change in the resistance causes a change in the
indicated fuel level. The powertrain control module monitors the fuel level sensor and uses the signals from the sensor in order to determine when to
perform certain EVAP control system diagnostic procedures.
