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

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

NOTE:

The following vacuum values are indicated by relative pressure from the fuel pressure sensor.

1. Verify that the fuel pressure sensor is normal..

2. Connect the M-MDS to the DLC-2.

3. Switch the ignition ON (engine off).

4. Select the “FUEL_PRES”, “LOAD” and “RPM” PIDs on the M-MDS..

CAUTION:

If the engine is run at a high speed, it could be damaged. When racing the engine, be careful not to increase the engine speed suddenly.

5. After the “LOAD” PID is 60% or more

while the engine is raced with the accelerator pedal fully depressed, verify that the “FUEL_PRES” PID is approx. 15.0 MPa {153 kgf/cm2, 2176 psi}

If not as specified, replace the high pressure fuel pump..

High Pressure Fuel Pump Control

Outline Changes the fuel pressure applied to the fuel injector according to engine operation conditions to improve engine output and startability. The PCM determines the fuel pressur ...

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 ...

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