Kawasaki Ninja Service Manual: Fuel Injector Output Voltage Inspection

Kawasaki Ninja Service Manual / Fuel System (DFI) / Fuel Injectors / Fuel Injector Output Voltage Inspection

NOTE

Be sure the battery is fully charged.

Fuel Injector Output Voltage Inspection


Do not disconnect the ECU connector

Special Tool - Needle Adapter Set: 57001-1457

Primary Fuel Injector Output Voltage [C] Connections to ECU Connector:

For Primary Fuel Injector #1

Fuel Injector Output Voltage Inspection


Digital Meter (+) → BL/R lead (ECU terminal 47)

Digital Meter (–) → Battery (–) terminal

For Primary Fuel Injector #2

Digital Meter (+) → BL/O lead (ECU terminal 48)

Digital Meter (–) → Battery (–) terminal

For Primary Fuel Injector #3

Digital Meter (+) → BL/BK lead (ECU terminal 49)

Digital Meter (–) → Battery (–) terminal

For Primary Fuel Injector #4

Digital Meter (+) → BL/Y lead (ECU terminal 50)

Digital Meter (–) → Battery (–) terminal

Secondary Fuel Injector Output Voltage [D]

Connections to ECU Connector: For Secondary Fuel Injector #1

Digital Meter (+) → O/R lead (ECU terminal 57)

Digital Meter (–) → Battery (–) terminal

For Secondary Fuel Injector #2

Digital Meter (+) → O/G lead (ECU terminal 72)

Digital Meter (–) → Battery (–) terminal

For Secondary Fuel Injector #3

Digital Meter (+) → O/BK lead (ECU terminal 61)

Digital Meter (–) → Battery (–) terminal

For Secondary Fuel Injector #4

Digital Meter (+) → O/Y lead (ECU terminal 62)

Digital Meter (–) → Battery (–) terminal

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

If the reading is in specification, 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 out of the specification, remove the ECU and check the wiring for continuity between main harness connectors.

Special Tool - Hand Tester: 57001-1394

Fuel Injector Output Voltage Inspection


Wiring Continuity Inspection (Primary Fuel Injectors) ECU Connector (Gray) [A] ←→ Primary Fuel Injector Connector [B]

For Primary Fuel Injector #1 [C]

BL/R lead (ECU terminal 47) [D]

For Primary Fuel Injector #2

BL/O lead (ECU terminal 48)

For Primary Fuel Injector #3

BL/BK lead (ECU terminal 49)

For Primary Fuel Injector #4

BL/Y lead (ECU terminal 50)

Wiring Continuity Inspection (Secondary Fuel Injectors) ECU Connector (Gray) [A] ←→ Secondary Fuel Injector Connector [E]

Fuel Injector Output Voltage Inspection


For Secondary Fuel Injector #1 [F]

O/R lead (ECU terminal 57) [G]

For Secondary Fuel Injector #2

O/G lead (ECU terminal 72)

For Secondary Fuel Injector #3

O/BK lead (ECU terminal 61)

For Secondary Fuel Injector #4

O/Y lead (ECU terminal 62)

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 ...

Fuel Injector Fuel Line Inspection
Remove: Fuel Tank (see Fuel Tank Removal) Air Cleaner Housing (see Air Cleaner Housing Removal) Disconnect: Primary and Secondary Fuel Hoses (see Fuel Hose Replacement in the Periodic Mai ...

Other materials:

Fuel Filter Cleaning
The fuel filter [A] is built into the fuel pump and can not be cleaned or checked. If the fuel filter is suspected of clogging or being damaged, replace it with the fuel pump as a set. Fuel Pump Circuit 1. Ignition Switch 2. Engine Stop Switch 3. Joint Connector E 4. ECU 5. Engine G ...

Piston Installation
Apply molybdenum disulfide oil solution to the oil ring expander, and install the oil ring expander [A] in the bottom piston ring groove so the ends [B] not butt together Applymolybdenum disulfide oil solution to the oil ring steel rails, and install the oil ring steel rails, one above th ...

Nozzle Assy Disassembly
Remove the nozzle assy (see Nozzle Assy Removal). Pull out the secondary fuel injectors [A] from the delivery pipe assy [B]. NOTE Do not damage the insertion portions of the injectors when they are pulled out from the delivery pipe assy. NOTICE Never drop the secondary fuel injecto ...