Fuel Pump Unit Description - Mazda 6 Training Manual

1 Fuel tank
2 Nonreturn valve
3 Fuel pump unit
4 Fuel injector
5 Pulsation damper
End Of Sie

FUEL PUMP UNIT DESCRIPTION

Note
• It is normal to hear the fuel pump operating when the ignition switch is turned to the ON position.
Function
• Due to the adoption of the mechanical returnless fuel system.
• The fuel pump unit, ecept for the fuel gauge sender unit, is integrated for confidentiality protection.
• To prevent decreased engine output from a lack of fuel supply when the vehicle is turning, the fuel pump has
been designed so the fuel supply always remains constant in the fuel reservoir cup.
• Fuel stored in the fuel reservoir cup is supplied from two lines: the check valve (one-way) and the jet pump.
Structure
FUEL SYSTEM
6 Fuel pump relay
7 Check connector
8 Quick release connector
9 Fuel filler cap
A6E391213350T01
F
A6E3912W024
F–19