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摘要

ATA Master Technician and MIM regular James Dillon returns to these pages with a look at the behaviour of the internal wiring system when a fault is present. During a recent diagnostic job, a thought struck me regarding the wiring and function of electronic sensors and actuators. Now, I don't mean that a sensor has three wires - a power, a ground and a signal -1 was considering the internal wiring of the relevant control unit.