Kawasaki Ninja Service Manual: For Primary Fuel Injectors

Kawasaki Ninja Service Manual / Fuel System (DFI) / Fuel Injectors / Fuel Injector Power Source Voltage Inspection / For Primary Fuel Injectors

For Primary Fuel Injectors

Remove the air cleaner housing (see Air Cleaner Housing Removal).
Disconnect the injector connector and connect the harness adapter [A] between these connectors as shown in the figure.

Main Harness [B] Primary Fuel Injector #1 [C]

Special Tool - Measuring Adapter: 57001-1700

Connect a digital meter [D] to the harness adapter lead.

Fuel Injector Power Source Voltage Inspection

Primary Fuel Injector Power Source Voltage Connections to Adapter:

For Primary Fuel Injector #1, #2, #3, #4

Digital Meter (+) → R (injector W/R) lead

Digital Meter (–) → Battery (–) terminal

Measure the power source voltage with the engine stopped.
Turn the engine stop switch to run position.
Turn the ignition switch to ON.

Power Source Voltage Standard: Battery Voltage for 3 seconds, and then 0 V

Turn the ignition switch to OFF

If the reading stays on battery voltage and never shows 0 V, check the fuel pump relay (see Relay Circuit Inspection in the Electrical System chapter).

If the fuel pump relay is normal, check the ECU for its ground and power supply (see ECU Power Supply Inspection).

If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

If there is still no battery voltage, check the fuel pump relay (see Relay Circuit Inspection in the Electrical System chapter).

If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

If there is still no battery voltage, check the fuel pump relay (see Relay Circuit Inspection in the Electrical System chapter).

If the fuel pump relay is normal, check the power source wiring (see wiring diagram in this section).

Special Tool - Hand Tester: 57001-1394

If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection).

If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

If the reading is in specification, check the output voltage (see Fuel Injector Output Voltage Inspection).

Fuel Injector Power Source Voltage Inspection

NOTE Be sure the battery is fully charged. Turn the ignition switch to OFF. ...

For Secondary Fuel Injectors

Remove the fuel tank (see Fuel Tank Removal). Disconnect the injector connector and connect the harness adapter [A] between these connectors as shown in the figure. Main Harness [B] Secon ...

Other materials:

Steering Play Inspection
Remove the lower fairings (see Lower Fairing Removal in the Frame chapter). Raise the front wheel off the ground with the jack. Special Tools - Jack: 57001-1238 Jack Attachment: 57001-1608 With the front wheel pointing straight ahead, alternately tap each end of the handlebar. The f ...

Subthrottle Valve Actuator Inspection
NOTE Be sure the battery is fully charged. Remove the air cleaner housing (see Air Cleaner Housing Removal in the Fuel System (DFI) chapter). Turn the ignition switch to ON. Check to see that all the subthrottle valves [A] open and close smoothly. Turn the ignition switch to OFF. I ...

Transmission Assy Installation
Assemble the transmission assy (see Transmission Assy Assembly). Be sure that the dowel pins are in position. Install the transmission assy on the crankcase. Tighten: Torque - Transmission Case Bolts: 20 N·m (2.0 kgf·m, 15 ft·lb) Install: Shift Shaft (see External Shift Mechani ...