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:
Fuel Pressure Sensor
Purpose/Function
Detects the fuel pressure in the fuel distributor as basic information for
mainly determining the fuel injection amount.
Detects the fuel pressure in the fuel distributor and inputs it to the PCM
as a fuel pressure signal.
Construction
Installed on ...
Instrument Cluster Disassembly/Assembly
CAUTION:
If the instrument cluster is hit forcefully during disassembly such as by
being dropped, it could get damaged and the system may not operate normally.
When disassembling the instrument cluster, perform the procedure on a workbench
on clean clothes being careful not to drop ...
Rear Crossmember Removal/Installation [Awd]
WARNING:
Verify that the crossmember is securely supported by a jack. If the rear
crossmember falls off, it can cause serious injury or death, and damage to the
vehicle.
CAUTION:
Performing the following procedures without first removing the rear ABS wheel-speed
sensor ...
