3-48 FUEL SYSTEM (DFI)
Water Temperature Sensor (Service Code 14)
Water Temperature Sensor Resistance Inspection
Remove the water temperature sensor (see Water Tem-
perature Sensor Removal/Installation).
Suspend the sensor [A] in a container of machine oil so
that the heat-sensitive portion and threaded portion are
Suspend a thermometer [B] with the heat-sensitive por-
tions [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 a digital meter, measure the internal resistance of
Water Temperature Sensor Resistance
*: Reference Information
If the reading is out of the range, replace the sensor.
If the reading is within the standard, but the problem still
exists, replace the ECU (see ECU Removal/Installation).
Water Temperature Sensor Circuit
1. Water Temperature Sensor
*(about 6.544 )