Mazda CX-5 Service & Repair Manual: High Pressure Fuel Pump

Mazda CX-5 Service & Repair Manual / Engine / Fuel / High Pressure Fuel Pump

Purpose, Function

Applies pressure to fuel sent from the fuel pump equipped on the fuel tank, and then pumps it to the fuel delivery pipe.
Fuel is sectioned and pumped by the up and down movement of the piston caused by the rotation of the cam installed to the rear end of the exhaust camshaft.

Construction

The high pressure fuel pump is installed to the exhaust camshaft with the vacuum pump.
The high pressure fuel pump consists of a spill valve control solenoid valve, spill valve, piston, and spring.

Operation

Based on the control signal from the PCM, the spill valve solenoid valve opens and closes in the high pressure fuel pump.
For the high pressure fuel pump control details, refer to CONTROL SYSTEM..

Fail-safe


DTC	Fail-safe
P0089:00	Limits the intake air amount. Stops the high pressure fuel pump control. The upper limit of the engine speed is 2,500 rpm.
P0091:00	Limits the intake air amount. Stops the high pressure fuel pump control.
P0092:00	Limits the intake air amount. Stops the high pressure fuel pump control.

High Pressure Fuel Pump 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 ...

Low Fuel Warning Light

Purpose The low fuel warning light warns the driver that the remaining fuel level is low. Function The instrument cluster calculates the fuel quantity based on the following ...

Other materials:

Afs Off Indicator Light
Purpose The AFS OFF indicator light notifies the user that the AFS is stopped or a malfunction occurs in the AFS. Function The AFS OFF indicator light illuminates when the AFS is stopped and flashes when a malfunction occurs in the AFS. Construction When the mi ...

Awd Warning Light
Purpose, Function Warns the driver of a AWD system malfunction. Construction The AWD warning light is built into the instrument cluster. Operation If the self-diagnostic function stores a DTC, the warning light illuminates to alert the driver of the malfunct ...

Check Valve Removal/Installation
Except U.S.A. And CANADA 1. Remove the floor under cover.. 2. Remove in the order indicated in the table. 1 Evaporative hose 2 Check valve 3. Install in the reverse order of removal. ...