Subthrottle valve actuator removal
Caution!
- Do not remove the subthrottle valve actuator [A] since it has been adjusted and set with precision at the factory.
- Never drop the actuator, especially on a hard surface. Such a shock to the actuator can damage it.
![](https://motoinstruction.ru/img/kawasaki/13/118792.jpg)
Subthrottle valve actuator inspection
Remove the air cleaner housing (see Air cleaner housing removal).
Turn the ignition switch ON.
Check to see that all subthrottle valves [A] open and close smoothly.
![](https://motoinstruction.ru/img/kawasaki/13/118793.jpg)
★ If the subthrottle valves do not operate, check the actuator internal resistance (see Resistance inspection in the Subthrottle Valve Actuator section).
Resistance inspection
Turn the ignition switch OFF.
Remove the fuel tank (see Fuel tank removal).
Disconnect the subthrottle valve actuator connector [A].
![](https://motoinstruction.ru/img/kawasaki/13/118794.jpg)
Connect a digital meter to the subthrottle valve actuator connector [A].
![](https://motoinstruction.ru/img/kawasaki/13/118795.jpg)
Measure the subthrottle valve actuator resistance.
Subthrottle valve actuator resistance:
- Connections: BK lead [1] ←→ P lead [2]
- G lead [3] ←→ W/BL lead [4]
- Standard: about 5.2-7.8 Ω
Input voltage inspection
Note. Be sure the battery is fully charged.
Turn the ignition switch OFF.
Remove the fuel tank (see Fuel tank removal).
Connect the peak voltage adapter [A] and a digital meter [B] to the connector (main harness side) [C], using the needle adapter set [D].
![](https://motoinstruction.ru/img/kawasaki/13/118796.jpg)
Special Tools:
- Peak Voltage Adapter: 57001-1415
- Type: KEK-54-9-B
- Needle Adapter Set: 57001-1457
![](https://motoinstruction.ru/img/kawasaki/13/118797.jpg)
Subthrottle valve actuator input voltage connections to harness connector:
- (I) Meter (+) → BK lead [1]
- Meter (-) → P lead [2]
- (II) Meter (+) → G lead [3]
- Meter (-) → W/BL lead [4]
Measure the actuator input voltage with the engine stopped, and with the connector joined.
Turn the ignition switch ON.
Input voltage at sensor:
- Standard: about 8.9-10.9 V DC
★ If the reading is out of the range, check the wiring to ECU (see next diagram).
★ If the wiring is good, replace the ECU.
Install the fuel tank (see Fuel tank installation).
Subthrottle valve actuator circuit (other than Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118798.jpg)
Subthrottle valve actuator circuit (Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118799.jpg)
1. ECU; 2. Subthrottle Valve Actuator