![](https://motoinstruction.ru/img/kawasaki/13/118774.jpg)
Input Terminal [A]; Output Terminal [B]; Ground Terminal [C]
Subthrottle sensor removal/adjustment
Caution!
- Do not remove or adjust the subthrottle sensor [A] since it has been adjusted and set with precision at the factory.
- Never drop the sensor, especially on a hard surface.
- Such a shock to the sensor can damage it.
![](https://motoinstruction.ru/img/kawasaki/13/118775.jpg)
Input voltage inspection
Notes:
- Be sure the battery is fully charged.
- The inspection is the same as "Input Voltage Inspection" of the inlet air pressure sensor and the atmospheric pressure sensor.
Turn the ignition switch OFF.
Remove the ECU (see ECU removal). Do not disconnect the ECU connectors.
Connect a digital voltmeter to the connector, using the needle adapter set.
- Special Tool - Needle Adapter Set: 57001-1457
Subthrottle sensor input voltage connections to ECU connector:
(Other than Europe Models [A])
- Meter (+) → BL lead (terminal 8)
- Meter (-) → BR/BK lead (terminal 22)
![](https://motoinstruction.ru/img/kawasaki/13/118776.jpg)
(Europe Models [B])
- Meter (+) → BL lead (terminal 10)
- Meter (-) → BR/BK lead (terminal 28)
![](https://motoinstruction.ru/img/kawasaki/13/118777.jpg)
Measure the input voltage with the engine stopped, and with the connectors joined.
Turn the ignition switch ON.
Input voltage at ECU connector:
- Standard: 4.75-5.25 V DC
Turn the ignition switch OFF.
★ If the reading of input voltage is less than the standard, check the ECU for its ground, power supply and wiring shorted.
★ If the input voltage is within the standard range, remove the fuel tank, and check wiring from ECU to the subthrottle sensor for continuity.
★ If the wiring is good, check the output voltage of the subthrottle sensor.
Output voltage inspection
Measure the output voltage at the ECU in the same way as input voltage inspection.
- Special Tool - Needle Adapter Set: 57001-1457
Subthrottle sensor output voltage connections to ECU:
(Other than Europe Models [A])
- Meter (+) → BL/W lead (terminal 19)
- Meter (-) → BR/BK lead (terminal 22)
![](https://motoinstruction.ru/img/kawasaki/13/118778.jpg)
(Europe Models [B])
- Meter (+) → BL/W lead (terminal 24)
- Meter (-) → BR/BK lead (terminal 28)
![](https://motoinstruction.ru/img/kawasaki/13/118779.jpg)
Turn the ignition switch ON.
Measure the output voltage when the subthrottle valve is fully opened or completely closed by hand.
Output voltage at ECU:
- Standard: 0.93-4.59 V DC (at subthrottle valve full opening to closing)
Note. The throttle sensor is operating correctly if the following voltages are obtained:
- 0.93 VDC (or slightly higher) with the subthrottle valve at the closed position.
- 4.59 VDC (or slightly lower) with the subthrottle valve at the fully open position.
Caution!
- Do not remove or adjust the subthrottle sensor. It has been adjusted and set with precision at the factory.
- Never drop the sensor can especially on a hard surface. A shock to the sensor can damage it.
Note.
- The standard voltage marked with an asterisk refers to the value when the voltage reading at the Input Voltage Inspection shows 5 V exactly.
- When the input voltage reading shows other than 5 V, derive a voltage range as follows.
- Example:
- In the case of a input voltage of 4.75 V.
- 0.93·4.75-5.00 = 0.88 V
- 4.59·4.75-5.00 = 4.36 V
- Thus, the valid range is 0.88-4.36 V
★ If the output voltage is within the standard range, check the wiring for continuity (see next diagram).
★ If the output voltage is far out of the standard range (e.g. when the wiring is open, the reading is 0 V), check the throttle sensor resistance.
Resistance inspection
Turn the ignition switch OFF.
Disconnect the subthrottle sensor connector.
Connect a digital meter [A] to the subthrottle sensor connector [B].
Measure the subthrottle sensor resistance.
![](https://motoinstruction.ru/img/kawasaki/13/118780.jpg)
Throttle sensor resistance:
- Connections: BL lead [C] ←→ BK lead [D]
- Standard: 4-6 kΩ
★ If the reading is out of the range, replace the throttle body assy.
★ If the reading is within the range, but the problem still exists, replace the ECU.
Subthrottle sensor circuit (other than Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118781.jpg)
Subthrottle sensor circuit (Europe models)
![](https://motoinstruction.ru/img/kawasaki/13/118782.jpg)