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


Special Tool - Measuring Adapter: 57001-1700

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

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

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:

Exploded View
AL: Tighten the two clamp bolts alternately two times to ensure even tightening torque. HG: Apply high-temperature grease. R: Replacement Parts WL: Apply soap and water solution or rubber lubricant. Specifications WARNINGSome replacement tires may adversely affect h ...

Water Temperature Sensor Resistance Inspection
Refer to the Water Temperature Sensor Inspection in the Electrical System chapter. If the reading is within the standard, but the problem still exists, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter). Water Temperature Sensor Circuit 1. ECU 2. Water T ...

Brake Disc Wear Inspection
Measure the thickness of each disc [A] at the point where it has worn the most. If the disc has worn past the service limit, replace it. Measuring Area [B] Brake Disc Thickness Standard: Front 5.3 5.7 mm (0.21 0.22 in.) Rear 4.8 5.2 mm (0.19 0.20 in.) Service Limit: Front 5. ...