Outline
Changes the fuel pressure applied to the fuel injector according to engine operation conditions to improve engine output and startability.
The PCM determines the fuel pressure value corresponding to the engine operation conditions based on the each input signal, and drives the spill valve control solenoid valve for optimum control of fuel pressure.
Block Diagram

OPERATION
Directly after engine start
During a cold engine start, the fuel pressure is raised to promote fuel atomization.
Basic Control
The PCM determines the target fuel pressure according to charging efficiency and performs feedback control by monitoring the fuel pressure in the fuel delivery pipe using the fuel pressure sensor.
When idling after engine warm up: Approx. 3 MPa {31 kgf/cm2, 435 psi}
After engine warm up, engine speed is 3,000 rpm or more, charging efficiency is 60 % or more: Approx. 15.0 MPa {153 kgf/cm2, 2176 psi}
Fuel Tank
High Pressure Fuel Pump InspectionService Publications
Service Publications
Factory-authorized Mazda service publications are available for owners who wish
to do some of their own maintenance and repair.
When requesting any of our publications through an Authorized Mazda Dealer, refer
to the chart below.
If they do not have what you need in stock ...
Climate Control Unit [Manual Air Conditioner]
Purpose
The climate control unit performs air conditioning according to the operation
by the users and the driving conditions of the vehicle.
Function
The climate control unit determines optimum air-conditioning based on the
input signals from each sensor and the control mo ...
Hazard Warning Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the decoration panel..
3. Verify that the continuity between the hazard warning switch terminals is
as indicated in the table.
If the continuity is as indicated in the table, go to the next step.
If not as indicated i ...