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:

Fuel Gauge Sender Unit Inspection [Awd]
Fuel gauge sender unit (main) 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 (main) terminals D a ...

Front Brake (Disc)
Purpose/Function Large diameter, ventilated disc type front brakes with a 297 mm {11.7 in} diameter and 28 mm {1.1 in} thickness have been adopted, improving braking force and fade resistance. Construction Operation When brake fluid is applied, the piston equipped on o ...

Front Door Trim Disassembly/Assembly
Driver-side 1. Disassemble in the order shown in the figure. 1 Switch panel cover 2 Power window main switch (See Power Window Main Switch, Power Window Subswitch And Lock Switch Removal Note.) 3 Fastener ...