A guide to probing and poking.
The Hippocratic Oath states a doctor shall “do no harm.” The technician’s oath is the same, but that we “do no harm” to a vehicle we are trying to diagnose or repair. This oath has become more difficult to follow as vehicles have become more complex.
One of the most controversial topics among technicians is the probing and piercing of wires and connectors. Some technicians curse t-pins and piercing probes claiming they can damage a wiring harness. On the other end of the spectrum are technicians who have zero problems stuffing a blunt multimeter lead into a connector for an ECM.
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