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:
Washer Fluid Level Sensor Inspection
1. Disconnect the negative battery cable..
2. Set the front over fender aside..
3. Set the mudguard (RH) aside..
4. Remove the front bumper..
5. Inspect for continuity according to washer fluid level between the washer
fluid-level sensor terminals.
If not as indicated in th ...
Fuel Gauge Sender Unit Inspection [2 Wd]
NOTE:
For the fuel gauge sender unit removal/installation, refer to the fuel pump
removal/installation because the fuel gauge sender unit is integrated with the
fuel pump..
1. Verify that the resistance at fuel gauge sender unit terminals D and C is
as indicated in the table ac ...
Liquid Crystal Display (LCD)
Outline
The LCD displays vehicle information in the instrument cluster.
The instrument cluster performs LCD fail-safe..
Function/Construction
The instrument cluster configures the indication of the LCD based on the
CAN signals sent from the related modules and displays ...
