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46
3.1.4 Ford Focus Smart Generator
Use a BNC to banana cable, connect one end to channel 1 of the oscilloscope, connect the black plug to the black
alligator clip to ground (battery negative), and use a needle to connect the red connector to the engine ECM to
generator output control line. Use BNC to banana cable, one end Connect to channel 2 of the oscilloscope, the other
black plug is connected to the black alligator clip to ground (the negative electrode of the battery), and the red
connector is connected to the feedback of the generator to the engine ECM with a stinger.
Use a current clamp of 600A and above, connect the BNC of the current clamp to channel 3, turn on the switch of
the current clamp, and clamp the current clamp to the output power line of the generator.
Start the vehicle and start the test. Among them, the control signal of ECM to the generator on channel 1 is square
wave/pulse width modulation signal/LIN line; the feedback signal of the generator on channel 2 is square
wave/pulse width modulation signal, which is displayed on channel 3. Is the output current of the generator.
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