Service Manual (KLZ1000C) — page 132 of 762

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3-48 FUEL SYSTEM (DFI)
Fuel Pump
Fuel Pump Operating Voltage Inspection
• Turn the ignition switch off.
• Remove   the seat (see Seat Removal(15-10)).
• the measuring
  Disconnect  the fuel pump lead connector and connect
                  adapter [A] between these connectors as
 shown.
  Main Harness [B]
  Fuel Pump [C]
 Special Tool - Measuring Adapter: 57001-1700
• Connect
  leads.
          a digital meter [D] to the measuring adapter

 Fuel Pump Operating Voltage
   Connections to Adapter:
      Digital Meter (+) → R (pump BK/Y) lead
      Digital Meter (–) → BK (pump BK/W) lead

• Measure    the operating voltage with engine stopped and
  with the connector joined.
• Slide  the engine start/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 Inspec-
 tion(16-117)).
 If the fuel pump relay is normal, check the ECU for its
 ground and power supply (see ECU Power Supply In-
 spection(3-39)).
 If the ground and power supply are good, replace the
 ECU.
 If there is still no battery voltage, check the fuel pump relay
 (see Relay Circuit Inspection(16-117)).
 If the fuel pump relay is normal, check the wiring for con-
 tinuity (see Fuel Pump Circuit(3-49)).
 If the wiring is good, check the ECU for its ground and
 power supply (see ECU Power Supply Inspection(3-39)).
 If the ground and power supply are good, replace the
 ECU.
 If the reading is in specification, but the pump does not
 operate, replace the fuel pump.
Pressure Regulator Removal
○The pressure regulator [A] is built into the fuel pump [B]
 and can not be removed.