This tool has fixed 5 cars that other techs failed to find the issue due to testing voltage on an open circuit. The most impressive find was for a Jaguar XJ6 cooling fan motor. Relay would click and the fan would not turn on. Checked voltage at fan connector using fan ground and that check showed 12.6v. Press the LoadPro button and the voltage dropped to 0V. Moved the ground lead to the chassis and got the same result = Issue is on the power side
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