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:

Front Body Control Module (Fbcm) Configuration (Using Read/Write Function)
NOTE: When performing configuration, it is necessary to read the vehicle specification information from the front body control module (FBCM) before replacing it. Connect the M-MDS to the vehicle and perform vehicle identification before removing the front body control module (FBCM). ...

Shift And Select Mechanism [C66 M R]
Purpose, Function The shift and select mechanism moves the shift fork to change gears according to the operation of the shift lever in the cabin. Construction Shift control module The moving parts of the shift control module are vertically positioned.. In th ...

Catch Tank
Purpose, Function Suppresses pulsation occurring before evaporative gas is inducted into the intake manifold. Construction The catch tank is installed in the engine compartment. Operation When evaporative gas flows from the charcoal canister to the purge sol ...