ANCEL PB600 Automotive Circuit Tester with 30-Foot Cable and Waveform Testing

Live waveform and digital display modes help the ANCEL PB600 reveal changing automotive signals, not just basic voltage readings. Its 30-foot cable gives you room to work around a vehicle while testing circuits. Need to trace a signal, check a relay, or evaluate a battery system? The PB600 brings those tasks together in one automotive electrical tool.

Tips for day-to-day use

Connect the tester to a vehicle 12V or 24V battery supply, or to an external 12/24V battery, then choose the function suited to the job. Use voltage, resistance, continuity, and diode checks for everyday wiring and component diagnostics. The continuity function sounds an alert when resistance is below 30Ω, helping you identify connected circuits as you trace wiring.

For a changing electrical signal, switch to waveform or digital display mode to view DC voltage, AC voltage, frequency, and duty cycle. When checking a component, the probe can apply battery power or ground through its tip, the left or right control selects positive or negative current. This can help you assess a component’s response without jumper wires. For a practical workflow, you might check a circuit’s continuity, inspect its signal, then activate a component as part of troubleshooting.

Specifications

• Type: Automotive circuit tester and electrical diagnostic tool
• Model: PB600
• Power source: Vehicle or external 12/24V battery
• Operating voltage: 8–35V DC
• Measurements: Voltage, resistance, diode characteristics, frequency, and duty cycle
• Functions: Waveform display, continuity alert, battery, cranking and charging tests, injector analysis, and relay testing
• Relay compatibility: Common 4-pin and 5-pin relays, using the included relay test cable and leads
• Cable: 30 feet
• Dimensions: 8.98 x 3.15 x 1.26 inches
• Included components: Circuit tester, probes, puncture needle, battery clip cable, and relay test cable

What you’ll notice day to day

The PB600 combines functions often handled by separate basic circuit testers, meters, and specialized checks. Its waveform analysis is useful when a simple voltage reading does not show how a signal changes, while the dedicated injector and relay functions provide focused options for those diagnostics. The battery module also brings Battery Test, Cranking Test, and Charging Test into the same tool, so you can examine the battery alongside starting and charging system checks.

Buyers commonly praise its usefulness for troubleshooting and appreciate being able to apply positive voltage or ground during component checks. Feedback on cord reach is mixed: some value the extended cable, while others would prefer more length. Opinions on build quality and accuracy also vary, and some buyers report probe durability concerns. These comments are individual experiences rather than a measure of how every unit will perform.

Questions before you buy

Can the PB600 test fuel injectors? Yes. It can display injector control signals in waveform and digital modes, including pulse characteristics, voltage, and signal changes, to support fuel-injection diagnostics.

What relay types can it check? It is designed to test common 4-pin and 5-pin automotive relays with the included relay test cable and leads.

What battery checks are available? The built-in battery module includes Battery Test, Cranking Test, and Charging Test for evaluating battery performance and the vehicle’s starting and charging systems.

Should you buy it?

If your automotive troubleshooting involves more than checking for power, the PB600 brings signal viewing, circuit measurements, component activation, injector and relay checks, and battery-system tests into one tool. Its range of functions and extended cable make it a practical fit for DIYers and technicians who work across different electrical diagnostic tasks and want those checks close at hand.