Inlet air temperature sensor removal/installation
Caution! Never drop the sensor, especially on a hard surface. Such a shock to the sensor can damage it.
Remove the air cleaner housing (see Air cleaner housing removal).
Remove the screw [A].
Pull out the inlet air temperature sensor [B] out of the air cleaner housing.
![](https://motoinstruction.ru/img/kawasaki/13/118749.jpg)
Put the inlet air temperature sensor into the air cleaner housing.
Tighten:
- Torque - Inlet Air Temperature Sensor Screw: 1.2 №m (0.12 kgf·m, 11 in·lb)
Output voltage inspection
Note. Be sure the battery is fully charged.
Remove the ECU (see ECU removal). Do not disconnect the ECU connectors.
Connect a digital voltmeter to the ECU connector, using needle adapter set.
- Special Tool - Needle Adapter Set: 57001-1457
Inlet air temperature sensor output voltage connections to ECU connector:
(Other than Europe Models [A])
- Meter (+) → Y lead (terminal 20)
- Meter (-) → BR/BK lead (terminal 22)
![](https://motoinstruction.ru/img/kawasaki/13/118750.jpg)
(Europe Models [B])
- Meter (+) → Y lead (terminal 26)
- Meter (-) → BR/BK lead (terminal 28)
![](https://motoinstruction.ru/img/kawasaki/13/118751.jpg)
Measure the sensor output voltage with the engine stopped and the connector joined.
Turn the ignition switch ON.
Output Voltage at ECU:
- Standard: about 2.25-2.50 V at inlet air temperature 20°C (68°F)
Note. The output voltage changes according to the inlet air temperature.
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 air cleaner housing, check the wiring between the ECU and the inlet air temperature sensor.
★ If the wiring is good, check the sensor resistance.
Sensor resistance inspection
Remove the inlet air temperature sensor (see Inlet Air Temperature Sensor Removal).
Suspend the sensor [A] in a container of machine oil so that the heat-sensitive portion is submerged.
Suspend a thermometer [B] with the heat-sensitive portion [C] located in almost the same depth with the sensor.
![](https://motoinstruction.ru/img/kawasaki/13/118752.jpg)
Note. The sensor and thermometer must not touch the container 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 the sensor across the terminals at the temperatures shown in the table.
Inlet air temperature sensor resistance:
Standard:
- 5.4-6.6 kΩ at 0°C (32°F)
- 0.29-0.39 kΩ at 80°C (176°F)
★ If the measurement is out of the range, replace the sensor.
★ If the measurement is within the specified, replace the ECU.
Inlet air temperature sensor circuit (other than Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118753.jpg)
Inlet air temperature sensor circuit (Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118754.jpg)
1. ECU; 2. Inlet Air Temperature Sensor; 3. Joint Connector B