Up Close: Power Probe PPPWM

The PPWM tip can be used with any Power Probe circuit tester to test PWM components.
July 29, 2025

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Application

The Power Probe PPPWM can be used to test blower motors, radiator fans, headlight bulbs, starters, fuel pumps, etc., as a component health check or diagnosis.

Origin

This tool originated from the challenges of testing PWM-actuated components without pulling out multiple tools or computers to supply PWM signals. The PWM tip allows the user to supply PWM signals to any power probe circuit tester for an all-in-one solution. 

Features and benefits

  • Adjustable duty cycle from 1 percent to 100 percent
  • Technicians can test pulse-width modulated components and their ability to be modulated throughout the entire range, as well as diagnose faulty/failing equipment 
  • Can be used inline with the amp tip
  • Allows technicians to test the current a component is drawing under all power load conditions

Manufacturing/engineering specifications

The PPPWM is made mainly of plastic in Taiwan and features a backlit LCD screen. The tool weighs 0.07 lbs. 

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