Switch and Sensors
Fuel Level Sensor Inspection
Fuel Pump (see Fuel Pump Removal in the Fuel System
Check that the float moves up and down smoothly without
binding. It should go down under its own weight.
If the float does not move smoothly, replace the fuel pump.
Float in Full Position [A]
Float in Empty Position [B]
Using the hand tester [A], measure the resistance across
the terminals in the fuel level sensor lead connector [B].
Special Tool - Hand Tester: 57001-1394
If the tester readings are not as specified, replace the fuel
Fuel Level Sensor Resistance
Full position [E]: 9 ∼ 11 Ω
Empty position: 213 ∼ 219 Ω
Water Temperature Sensor Inspection
Water Temperature Sensor (see Water Temperature
Sensor Removal in the Fuel System (DFI) chapter)
Suspend the sensor [A] in a container of machine oil so
that the heat-sensitive portion and threaded portion are
Suspend an accurate thermometer [B] with heat-sensitive
portions [C] located in almost the same depth.
The sensor and thermometer must not touch the con-
tainer side or bottom.
Place the container over a source of heat and gradually
raise the temperature of the oil while stirring the oil gently
for even temperature.
Using the hand tester, measure the internal resistance of
the sensor across the terminal and the body at the tem-
peratures shown in the table.
If the measurement is out of the range, replace the sensor.
Water Temperature Sensor Resistance
*: Reference Information
ELECTRICAL SYSTEM 16-105