Tracker 4WD L4-1.6L VIN 6 (1998)
Fuel Tank Unit: Description and Operation
Fuel Level Sensor
The fuel level sensor (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 (I/P) cluster assembly and the
Powertrain Control Module (PCM). 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 PCM 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.