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:
Clutch Pedal Position Switch Removal/Installation [C66 M R]
1. Disconnect the negative battery cable..
2. Disconnect the clutch pedal position switch connector.
3. Rotate the clutch pedal position switch 45° counterclockwise.
4. Remove the clutch pedal position switch from the clutch pedal.
5. Insert a new clutch pedal position switch into t ...
Extractor Chamber Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Rear splash shield.
b. Rear combination light.
c. Rear bumper.
3. Insert a tape-wrapped flathead screwdriver shown in the figure and remove
clips in the direction of arrow (1).
4. Remove the extractor cham ...
Throttle Position (TP) Sensor
Purpose/Function
Detects the throttle valve opening/closing condition, which operates in accordance
with the accelerator pedal operation, as basic information for mainly determining
the fuel injection amount.
Detects the throttle valve opening/closing condition, which operates i ...
