High Pressure Fuel Pump Inspection
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- The following values are indicated by relative pressure from the fuel pressure sensor.
- Verify that the fuel pressure sensor is normal. (See FUEL PRESSURE SENSOR INSPECTION .)
- Connect the M-MDS to the DLC-2.
- Switch the ignition ON (engine off).
- Select the "FUEL_PRES", "LOAD" and "RPM" PIDs on the M-MDS. (See ON-BOARD DIAGNOSTIC TEST
.)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.
- Is the "FUEL_PRES" PID value 3.0 MPa {31 kgf/cm2
, 435 psi} or more while idling.
- If not as specified, replace the high pressure fuel pump. (See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION .)