| 1. Disconnect the negative battery terminal. |
| 2. Remove the fuel pressure. |
| 3. Lift the car. |
| 4. Connect the measuring instrument OK2A1 about 131,110 A fuel filter. |
| 5. Connect the cable to the negative terminal of the battery. |
| 6. An additional wire connect plugs FUEL PUMP (the fuel pump) and In + a diagnostic socket. |
| 7. Turn on ignition no more than 10, whereby the fuel pump starts to work and create the desired pressure in the fuel system. |
8. Check the pressure in the fuel system.
Fuel pressure: 320-350 kPa
If the pressure exceeds the required values:
- Check the cleanliness of the fuel return pipe;
- If the fuel return pipe is clean, replace the pressure regulator.
If the pressure is below the desired value:
- Close the fuel return pipe, and check whether the pressure rises;
- If the pressure increases, replace a pressure regulator;
- If the pressure does not rise, measure the maximum pressure created by the fuel pump. |
| 9. Turn off the ignition and remove additional a wire connecting the terminals of the diagnostic socket. |
