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92
3.3.4 Fuel Pump
The fuel in the fuel tank can be pumped and pressurized through the fuel pump, usually there are 6-8 sectors. Under
the same condition of the engine, a good fuel pump has the same and uniform current change in each sector.
Use a current clamp, connect one end to channel 1 of the oscilloscope, and clamp the other end to the power line of
the fuel pump. Pay attention to the direction of the current. (You can also use the corresponding fuse, replace it with
a extension cord and clamp on the cord of the current clamp).
Use ATO oscilloscope to test the electronic fuel pump, the specific operation is shown in Figure 3-30 below:
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