Kawasaki Ninja Service Manual: Oxygen Sensor - not activated (Service Code 33, Equipped Models)

Kawasaki Ninja Service Manual / Self-Diagnosis System / Oxygen Sensor - not activated (Service Code 33, Equipped Models)

Oxygen Sensor Removal/Installation

Refer to the Oxygen Sensor Removal/Installation (Equipped Models) in the Electrical System chapter.

Oxygen Sensor Inspection

Remove: Fuel Tank (see Fuel Tank Removal in the Fuel System (DFI) chapter) Oxygen Sensor Lead Connector [A]

Oxygen Sensor Inspection

Connect the measuring adapter [A] between the harness connector and oxygen sensor lead connector.

Main Harness [B] Oxygen Sensor [C]

Special Tool - Measuring Adapter: 57001-1700

Connect a digital meter [D] to the measuring adapter leads.

Oxygen Sensor Inspection

Oxygen Sensor Output Voltage Connections to Adapter: Digital Meter (+) → R (sensor BK) lead Digital Meter (–) → BK (sensor GY) lead

Oxygen Sensor Inspection

Remove the air switching valve [A] (see Air Switching Valve Removal in the Engine Top End chapter).

Do not disconnect the air switching valve connector [B].

Remove the hoses [C].

Oxygen Sensor Inspection

Install the suitable plugs [A] on the fitting of the air suction valve covers, and shut off the secondary air.
Install the following parts temporarily.

Air Cleaner Housing (see Air Cleaner Housing Installation in the Fuel System (DFI) chapter) Fuel Tank (see Fuel Tank Installation in the Fuel System (DFI) chapter)

Oxygen Sensor Inspection

Warm up the engine thoroughly until the radiator fan starts.
Measure the output voltage with the connector joined.

Measuring Adapter [A]

Output Voltage (with Plugs, Rich) Standard: DC 0.8 V or more

Oxygen Sensor Inspection

Turn the ignition switch to OFF.
Remove the air cleaner housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter).
Remove the plugs from the fittings [A].

WARNING

The engine gets extremely hot during normal operation and can cause serious burns. Never touch a hot engine.

Oxygen Sensor Inspection

Install the following parts temporarily.
Air Cleaner Housing (see Air Cleaner Housing Installation in the Fuel System (DFI) chapter) Fuel Tank (see Fuel Tank Installation in the Fuel System (DFI) chapter)
Start the engine, and let it idle.
Measure the output voltage with the connector joined.
Output Voltage (without Plugs, Lean) Standard: DC 0.24 V or less
Turn the ignition switch to OFF.

If the reading is out of the standard (with plugs: 0.8 V or more, without plugs: 0.24 V or less), remove the ECU and check the wiring for continuity between harness connectors.

Special Tool - Hand Tester: 57001-1394

Oxygen Sensor Inspection

Disconnect the ECU and sensor connectors.

Wiring Continuity Inspection ECU Connector [A] ←→ Oxygen Sensor Connector [B] W/BL lead (ECU terminal 35) [C] BR/BK lead (ECU terminal 13) [D]

If the wiring is good, replace the sensor.

If the reading is within the standard (with plugs: 0.8 V or more, without plugs: 0.24 V or less), check the ECU for its ground and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).

If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).

Oxygen Sensor Circuit

Oxygen Sensor Circuit

1. ECU

2. Oxygen Sensor

3. Ignition Switch

4. Joint Connector F

5. Joint Connector A

6. Fuse Box 1

7. Ignition Fuse 15 A

8. Relay Box

9. ECU Main Relay

10. Frame Ground 3

11. Starter Relay

12. ECU Fuse 15 A

13. Main Fuse 30 A

14. Battery

15. Engine Ground

Subthrottle Sensor Resistance Inspection

Turn the ignition switch to OFF. Disconnect the subthrottle sensor connector. Connect a digital meter [A] to the subthrottle sensor connector [B]. Measure the subthrottle sensor resistance. ...

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Other materials:

Radiator Cap Inspection
Remove: Radiator Cap (see Coolant Change in the Periodic Maintenance chapter) Check the condition of the bottom [A] and top [B] valve seals and valve spring [C]. If any one of them shows visible damage, replace the cap with a new one. Install the cap [A] on a cooling system pr ...

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It is the owner’s responsibility to keep the battery fully charged. Failure to do so can lead to battery failure and leave you stranded. If you are riding your vehicle infrequently, inspect the battery voltage weekly using a voltmeter. If it drops below 12.8 volts, the battery should be ...

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Replace the following parts with new ones. Slide Bushing Guide Bushing Oil Seal Install the following parts to the inner tube [A]. Dust Seal [B] Retaining Ring [C] Apply grease to the oil seal lips. Install the oil seal [A] so that the stamp side faces lower side. Insta ...