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:

Panel Light
Purpose The panel light adjusts the instrument cluster and steering switch illumination brightness. Function The instrument cluster adjusts the brightness of the following illumination lights when a TNS illumination signal sent via CAN transmission from the front body co ...

Exhaust System Removal/Installation
WARNING: A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system. 2WD 1. Disconnect the negative battery cable.. 2. Remove in the order indicated in the table. 3. Remove the insulator.. 4. Ins ...

Disc Pad (Rear) Replacement
1. Remove in the order indicated in the table. 2. Install in the reverse order of removal. 3. After installation, pump the brake pedal a few times and inspect the following: The disc pad projection is securely installed to the piston groove Parking brake lever stroke Bra ...