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3.2.8 Fuel pressure
Fuel pressure signals generally appear on high-pressure fuel rails or sensors or common rail diesel vehicles, and the
pressure is relatively high. Generally, the fuel pressure is proportional to the output voltage, and the voltage
increases with the angle of the accelerator pedal (no-load and full-load will affect the voltage rise time).
Use a BNC to banana cable, connect one end to channel 1 of the oscilloscope, the other end of the black plug is
grounded, and the red connector uses a needle to connect the signal line of fuel pressure.
Use ATO oscilloscope to test the fuel pressure sensor, the specific operation is shown in Figure 3-18:
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