16-72 ELECTRICAL SYSTEM
Switches and Sensors
Water Temperature Sensor Inspection
Remove the water temperature sensor (see Water Tem-
perature Sensor Removal in the Fuel System (DFI) chap-
Suspend the sensor [A] in a container of coolant so that
the temperature-sensing projection [E] and threaded por-
tion [E] are submerged.
Suspend an accurate thermometer [B] in the coolant.
The sensor and thermometer must not touch the con-
tainer side or bottom.
Place the container over a source of heat and gradu-
ally raise the temperature of the coolant while stirring the
Using the hand tester, measure the internal resistance of
The sensor sends electric signals to the ECU (Electronic
Control Unit) and coolant temperature gauge in the meter
Measure the resistance across the terminals and the body
(for the gauge) at the temperatures shown in the table.
If the hand tester does not show the specified values, re-
place the sensor.
Water Temperature Sensor
Resistance for ECU [C]
Resistance for Water Temperature Gauge [D]
Speed Sensor Removal
Fuel Tank (see Fuel Tank Removal in the Fuel System
Disconnect the speed sensor lead connector [A].
Remove the speed sensor bolt [B] and spacer.
Remove the speed sensor [C].
Speed Sensor Installation
Install the speed sensor.
Torque - Speed Sensor Bolt: 12 N·m (1.2 kgf·m, 104 in·lb)