Checking the fuel pump relay

The fuel pump relay test only needs to be done when the fuel pump is not working.

Check the fuse No. 18 of the fuel pump, if necessary, replace the fuse.



Remove the fuel pump relay at position #12 of the relay board.

Turn on the ignition and connect the control pump on semiconductor diodes between the following contacts: 6 and ground (-), 2 and mass (-), 6 and 4. The prescribed voltage value is approximately the voltage of the battery (12 volt). Otherwise, find a wire break in accordance with the wiring diagram and repair it.
Switch off the ignition.

Connect a test lamp between pins 3 and 2.

Turn on the ignition and observe the control lamp. The control lamp should light up for about 1 second and then go out.

Otherwise, find a broken wire according to the wiring diagram and repair, if necessary, replace the control unit.