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Fuel Pump Operating Voltage Inspection - Kawasaki Z1000 Service Manual

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  • Contents

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3-120 FUEL SYSTEM (DFI)
Fuel Pump

Fuel Pump Operating Voltage Inspection

○
Be sure the battery is fully charged.
•
Turn the ignition switch OFF.
•
Remove the right side cover (see Side Cover Removal in
the Frame chapter).
•
Disconnect the fuel pump lead connector and connect the
harness adapter [A] between these connectors as shown.
Main Harness [B]
Fuel Pump [C]
Special Tool - Measuring Adapter: 57001-1700
•
Connect a digital meter [D] to the harness adapter leads.
Fuel Pump Operating Voltage
Connections to Adapter:
Digital Meter (+) → R (pump Y/R) lead
Digital Meter (–) → BK (pump BK/W) lead
•
Measure the operating voltage with engine stopped and
with the connector joined.
•
Turn the engine stop switch run position.
•
Turn the ignition switch ON.
Operating Voltage
Standard: Battery Voltage for 3 seconds, and then 0 V
•
Turn the ignition switch 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 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 ECU main
relay and fuel pump relay (see Relay Circuit Inspection in
the Electrical System chapter).
If the main relay and pump relay are normal, check the
wiring for continuity (see wiring diagram in this section).
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, but the pump does not op-
erate, replace the fuel pump (see Fuel Pump Removal/In-
stallation).
NOTE

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