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:

D Pillar Speaker Inspection
D-pillar speaker 1. Disconnect the negative battery cable.. 2. Remove the following parts: a. Trunk board. b. Trunk end trim. c. Rear scuff plate. d. Trunk side trim. e. D-pillar trim. 3. Disconnect the D-pillar speaker connector.. 4. Verify that the resistance between the D-pillar ...

Shift Solenoid No.4 [Fw6 A EL, Fw6 Ax EL]
Purpose/Function Shift solenoid No.4 adjusts the hydraulic pressure in the high clutch circuit and the low and reverse brake circuit based on the current demand from the TCM according to the vehicle conditions. Construction Shift solenoid No.4 is installed to the solenoid c ...

Fuel Injector
Purpose, Function Promotes atomization of fuel by injecting it from the multiple holes. Injects fuel according to the control signal from the PCM. Construction The fuel injector is installed to the cylinder head. The fuel injector has multiple injection hole ...