Mazda CX-5 Service & Repair Manual: Returnless Fuel System
Purpose, Outline
-
Fuel evaporation in the fuel tank is reduced by adjusting the fuel amount (fuel pressure) ejected from the fuel pump and preventing fuel warmed in the engine compartment from returning.
System Diagram
2WD
AWD
Structure
-
The returnless fuel system consists of the following parts:
|
Part name |
Reference |
|
Fuel filter (low-pressure) |
(See FUEL PUMP UNIT [SKYACTIV-G 2.0].) |
|
Fuel filter (high-pressure) |
|
|
Pressure regulator |
|
|
Fuel pump |
Operation
-
Fuel in the fuel tank is pumped out through the fuel filter (low-pressure) by the fuel pump, filtered by the fuel filter (high-pressure), and then regulated to a specified pressure by the pressure regulator. The regulated fuel is sent to the high pressure fuel pump, and unnecessary regulated fuel is returned from the pressure regulator to the fuel tank.
2WD
AWD
Quick Release Connector Removal/Installation
WARNING:
Fuel is very flammable liquid. If fuel spills or leaks from the pressurized
fuel system, it will cause serious injury or death and facility breakage. Fuel
can also irritate skin ...
Fuel Pressure Sensor Inspection
Voltage Inspection
NOTE:
The fuel pressure sensor cannot be removed as a single unit. When replacing
the fuel pressure sensor, replace it together with the fuel distributor as a
single ...
Other materials:
Magnetic Clutch Disassembly/Assembly [Manual Air Conditioner]
1. Disassemble in the order indicated in the table.
1
Bolt
(See Bolt Removal/Installation Note.)
2
Pressure plate
3
Shim
(See Shim Installation Note.)
4
Snap ring
(See Snap Ring ...
Catalytic Converter
Purpose, Function
Purifies contaminants in the exhaust gas by utilizing the chemical reactions
of the three-way catalytic converter.
A WU-TWC and a TWC have been adopted.
WU-TWC
The three-way catalyst is integrated with the exhaust manifold.
Because the c ...
Start Stop Unit Configuration (Using Read/Write Function)
NOTE:
When performing configuration, it is necessary to read the vehicle specification
information from the start stop unit before replacing it. Connect the M-MDS
to the vehicle and perform vehicle identification before removing the start
stop unit. The vehicle specification informa ...
