Oxygen Sensor Removal/Installation
- Refer to the Oxygen Sensor Removal/Installation in the Electrical System chapter.
Oxygen Sensor Inspection
- Warm up the engine thoroughly until the radiator fan starts.
- Turn the ignition switch OFF.
- Disconnect the oxygen sensor connector and connect the harness adapter [A] between these connectors.
![](https://motoinstruction.ru/img/kawasaki/23/128321.jpg)
Special Tool - Oxygen Sensor Measuring Adapter: 57001 -1682
- Connect a digital meter to the harness adapter lead.
Oxygen Sensor Output Voltage
Connections to Adapter
- Meter (+) → BL/Y (sensor BL) lead
- Meter (-) → BR/BK (sensor W) lead
- Remove the air switching valve hose from the fitting.
- Install the suitable plug [A] on the fitting [B] and shut off the secondary air.
![](https://motoinstruction.ru/img/kawasaki/23/128322.jpg)
- Turn the ignition switch ON.
- Start the engine, and let it idle.
- Measure the output voltage with the connector joined.
Oxygen Sensor Output Voltage (with Plugs) Standard: 0.7 V or more
- Next, remove the plugs from the fitting [A] with idling
![](https://motoinstruction.ru/img/kawasaki/23/128323.jpg)
- Measure the output voltage with the connector joined.
Oxygen Sensor Output Voltage (without Plugs)
Standard: 0.2 V or less
If the reading is within range (with plugs: 0.7 V or more, without plugs: 0.2 V or less), the oxygen sensor is good.
If the reading is without range, inspect the engine and fuel supply system.
If the engine and fuel supply system good, replace the oxygen sensor (See Oxygen Sensor Removal/Installation in the Electrical System chapter).
Oxygen Sensor Circuit
![](https://motoinstruction.ru/img/kawasaki/23/128324.jpg)
1. ECU; 2. Oxygen Sensor; 3. Water-proof Joint E; 4. Water-proof Joint C; 5. Oxygen Sensor Heater Fuse 10 A; 6. Main Fuse 30 A; 7. Battery; 8. Frame Ground; 9. Joint Connector