Removal/installation
Caution! Never drop the sensor, especially on a hard surface. Such a shock to the sensor can damage it.
Remove the fuel tank (see Fuel tank removal).
Drain the coolant (see Coolant change in the Periodic Maintenance chapter).
Disconnect the sensor connector [A], and unscrew the water temperature sensor [B].
- Torque - Water Temperature Sensor: 12 N·m (1.2 kgf·m, 106 in·lb)
![](https://motoinstruction.ru/img/kawasaki/13/118755.jpg)
Fill the engine with coolant and bleed the air from the cooling system (see Coolant change in the Periodic Maintenance chapter).
Output voltage inspection
Note.
- Be sure the battery is fully charged.
- The output voltage changes according to the coolant temperature in the engine.
Remove the ECU (see ECU removal). Do not disconnect the connectors.
Connect a digital voltmeter to the ECU connector, using two needle adapters.
- Special Tool - Needle Adapter Set: 57001-1457
Measure the output voltage of the sensor with the engine stopped and the connector joined.
Turn the ignition switch ON.
Water temperature sensor output voltage connections to ECU:
(Other than Europe Models [A])
- Meter (+) → O lead (terminal 17)
- Meter (-) → BR/BK lead (terminal 22)
![](https://motoinstruction.ru/img/kawasaki/13/118756.jpg)
(Europe Models [B])
- Meter (+) → O lead (terminal 20)
- Meter (-) → BR/BK lead (terminal 28)
![](https://motoinstruction.ru/img/kawasaki/13/118757.jpg)
- Standard: about 2.80-2.97 V at 20°C (68°F)
Turn the ignition switch OFF.
★ If the output voltage is out of the specified, check the ECU for its ground, and power supply (see ECU power supply inspection). If the ground and power supply are good, remove the fuel tank and check the wiring between the ECU and the water temperature sensor for continuity.
★ If the wiring is good, check the water temperature sensor resistance.
Water temperature sensor resistance inspection
Refer to the Water temperature sensor inspection in the Electrical System chapter (see Water temperature sensor inspection in the Electrical System chapter).
Water temperature sensor circuit (other than Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118758.jpg)
Water temperature sensor circuit (Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118759.jpg)
1. ECU; 2. Water Temperature Sensor; 3. Joint Connector B