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:
Manifold Absolute Pressure (Map) Sensor/Intake Air Temperature (Iat) Sensor
No.2 Removal/Installation
NOTE:
Because the IAT sensor No.2 is integrated in the MAP sensor, replacing the
IAT sensor No.2 includes replacement of the MAP sensor/IAT sensor No.2.
1. Disconnect the negative battery cable..
2. Disconnect the MAP sensor/IAT sensor No.2 connector.
3. Remove the MAP sensor/IA ...
Efficient Removal Of Body Panels
Body Measurements
Before removal or rough?cutting, first measure the body at and around the
damaged area against the standard reference dimension specifications. If there
is deformation, use frame repair equipment to make a rough correction.
Prevention of Body Deformation
...
Rear Seat Removal/Installation
CAUTION:
When removing or putting in the rear seat, contact with the surrounding areas
of the vehicle could cause scratches and damage. When removing or putting in
the rear seat, always use two or more persons to perform the work and be careful
not to scratch or damage the rear seat ...
