Water Temperature Sensor (Service Code 14)
Never drop the sensor, especially on a hard surface.
Such a shock to the sensor can damage it.
Drain the coolant (see Coolant Change in the Periodic
Remove the throttle body assy (see Throttle Body Assy
Removal in this chapter).
Water Temperature Sensor [A]
Apply silicone sealant to the threads of the water temper-
ature sensor and tighten it.
Sealant - Kawasaki Bond (Silicone Sealant): 56019-120
Torque - Water Temperature Sensor: 25 N·m (2.5 kgf·m, 18
Fill the engine with coolant and bleed the air from the
cooling system (see Coolant Filling in the Cooling System
Output Voltage Inspection
Be sure the battery is fully charged.
Remove the ECU (see ECU Removal in this chapter). Do
not disconnect the connectors.
Connect a digital voltmeter [A] to the ECU connectors [B],
with the needle adapter set.
Special Tool - Needle Adapter Set: 57001-1457
Water Temperature Sensor Output Voltage
Connections to ECU
Meter (+) → O lead (terminal 9)
Meter (–) → BR/BK lead (terminal 28)
Measure the sensor output voltage with the engine
stopped and the connector joined.
Turn the ignition switch ON.
Output Voltage at ECU
Standard: About 2.80 ∼ 2.97 V at 20°C (68°F)
The output voltage changes according to the coolant
temperature in the engine.
FUEL SYSTEM (DFI) 3-57