Description
TopDiag • Automotive circuit system tester P61
The TopDiag P61 is a professional-grade automotive electrical circuit tester designed for diagnosing 9-30 V DC systems. It helps professionals such as auto electricians, service technicians, and maintenance workshops pinpoint faults in wiring, components, and electrical accessories. With a vivid 0.96-inch color display and rugged design, it delivers functions like voltage and resistance measurement, component activation up to 8 A, pulse signal analysis, and more—all in one handheld tool.
Key benefits
- Wide voltage operating range (DC 9-30 V) and measurement span (0.3-70 V) for use on various vehicle types.
- Component activation capability up to 8 A for testing relays, injectors, lamps, and other loads directly.
- Signal frequency detection between 10-200 kHz to verify pulse generators, coils, and sensors.
- Resistance measurement from 1 Ω to 200 kΩ, plus diode and continuity testing to find wiring issues and faulty components.
- Built-in flashlight and polarity detection to improve visibility and speed during diagnosis in dark or confined environments.
Supported functions
Depending on vehicle compatibility the following functions are supported:
- DC voltage measurement and polarity identification
- Component activation (up to 8 A)
- Signal pulse detection and frequency analysis
- Resistance, continuity, and diode testing
- Ground/earth circuit testing
- Starter cranking test and charging system diagnosis
- Short-circuit tracing and trailer light/connector verification
Included items
- 1 × TopDiag P61 circuit system tester (Model No. P61)
- 1 × jump lead with battery clamps for power input
- 1 × test probe
- 1 × user manual










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