Description
TopDiag • Automotive circuit system tester P180
The TopDiag P180 is a professional handheld tester designed for diagnostics of 9-30V vehicle electrical systems. Built with a durable probe, TFT color display, and internal circuit protection, it serves technicians working on cars, trucks, motorcycles, marine, and off-road equipment. It measures both DC (0-200V) and AC (-100VAC to +100VAC) voltage, detects resistor values from 0.1Ω to 1MΩ, and includes multifunction tests such as battery startup, charge, load; fuel injector signal and cleaning; and open circuit wire location using the P181 wire finder. The device supports multiple languages and operates reliably in harsh workshop conditions.
Key benefits
- Ultra-wide voltage ranges (DC up to 200V, AC ±100VAC) for versatile circuit verification
- Comprehensive battery diagnostics: startup, charge, and load test modes for safety and performance checks
- Wire breakpoint detection with acoustic signal and P181 wire-finder for precise fault location
- Fuel injector testing and injector cleaning modes to assess and maintain injector function
- Internal circuit breaker for overload protection with reset function for safe component activation
Supported functions
Depending on vehicle compatibility the following functions are supported:
- DC voltage measurement
- AC voltage measurement and waveform analysis (RMS, peak-to-peak, frequency)
- Resistance and diode testing
- Component activation (e.g. lights, solenoids, fans)
- Fuel injector testing and cleaning
- Continuity and breakthrough wire detection using P181 wire-finder
- Battery health tests (startup, charge, load)
Included items
- 1 × P180 circuit tester main unit
- 1 × P181 wire finder receiver
- 1 × alligator clip battery cable
- 1 × probe adapter
- 1 × power cable
- 1 × user manual
Supported languages
English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, German, Italian, Turkish, Polish, Indonesian, Spanish, Portuguese, Russian, Vietnamese, Thai, Arabic










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