Introduction
The ANCEL PB100 Automotive Power Circuit Probe Tester is a versatile diagnostic tool designed for automotive electrical systems. It combines the functions of a multimeter, test light, and fuse tester, providing comprehensive capabilities for identifying and resolving electrical issues in 12V and 24V vehicle circuits. This manual provides detailed instructions for the proper setup, operation, maintenance, and troubleshooting of your PB100 device.
The PB100 is engineered to simplify electrical troubleshooting tasks, offering accurate readings and various testing modes to diagnose issues efficiently. Its robust design and user-friendly interface make it an essential tool for both professional technicians and DIY enthusiasts.
Package Contents

Image: ANCEL PB100 Power Circuit Probe Tester with its included accessories, including cables, clips, and the main unit.

Image: A top-down view of all components included in the ANCEL PB100 kit, neatly arranged outside their carrying case.
Upon opening the package, verify that all components are present and in good condition. The standard package for the ANCEL PB100 includes:
- 1 x PB100 Circuit Probe Tester Unit
- 1 x Probe Tip
- 1 x 20ft Extension Cable
- 1 x Battery Hookup Clip Set (Alligator Clips)
- 1 x 12-Volt Cigarette Lighter Adapter
- 1 x Sturdy Carrying Case
- 1 x User Manual (this document)
Setup
The ANCEL PB100 is designed for quick and easy setup. It operates by drawing power directly from the vehicle's 12V or 24V battery, or via the cigarette lighter port. No internal batteries are required.
- Power Connection: Connect the red alligator clip to the positive (+) terminal of the vehicle's battery and the black alligator clip to the negative (-) terminal. Alternatively, plug the cigarette lighter adapter into the vehicle's cigarette lighter socket.
- Probe Attachment: Securely attach the probe tip to the main unit.
- Initial Power-On: Once connected, the device will power on automatically, and the LCD screen will display the current voltage. The built-in work lights will illuminate, assisting in dark environments.

Image: The ANCEL PB100 connected to a vehicle battery using the provided alligator clips for power.

Image: The ANCEL PB100 connected to a vehicle's cigarette lighter socket for power.
Operating Instructions
The ANCEL PB100 offers multiple diagnostic modes to test various aspects of a vehicle's electrical system. Use the orange button on the tester to cycle through the different functions.
Key Functions and Modes:

Image: An overview of the ANCEL PB100's comprehensive testing capabilities, including voltage, continuity, signal circuit, and component activation.

Image: Visual representation of the four primary working modes: DC Voltage, AC Voltage, Resistance, and Diode test, as displayed on the PB100's screen.
- DC Voltage Test: Measures the DC voltage of the circuit with a precision of 0.1 volt. Touch the probe tip to the circuit point to read the voltage.
- AC Voltage Test: Displays maximum voltage, minimum voltage, and frequency of AC circuits. Useful for testing sensors and signal circuits.

Image: The PB100 being used to troubleshoot errors by testing a sensor/signal circuit in a vehicle's engine bay.
- Resistance Test: Measures resistance between the probe tip and the auxiliary ground lead. This helps determine if a circuit is complete or broken.
- Diode Test: Checks the operation of diodes, displaying the actual forward voltage when a conducting current is present.
- Continuity Test: Quickly checks the continuity of switches, relays, and other components.
- Polarity Test: Instantly identifies positive, negative, and open circuits. The device features a red LED for positive and a green LED for negative.

Image: The PB100's screen indicating polarity with red and green LEDs, showing a positive connection.
- Component Activation: The PB100 can activate components by supplying power or ground. Use the toggle switch to apply hot (forward) or ground (backward) to test components like blower motors, window motors, headlights, and fuel pumps. Use extreme caution to avoid damaging sensitive electronic components.

Image: The ANCEL PB100 connected to a vehicle battery, demonstrating its ability to activate various components such as a cooling fan, fuel pump, headlight, and solenoid.
- Short/Open Circuit Test: Helps in tracing wires and locating short or open circuits quickly without wasting fuses.
- Ground Test: Instantly identifies bad ground contacts.
- Trailer Light Test: Capable of testing trailer lights and connections.
Maintenance
Proper maintenance ensures the longevity and accuracy of your ANCEL PB100. The device is designed with durability in mind, featuring a stainless steel probe to resist rust and intelligent overload protection.
- Cleaning: After each use, wipe the probe tip and the main unit with a clean, dry cloth to remove any dirt, grease, or moisture. Avoid using abrasive cleaners or solvents.
- Storage: Store the PB100 and its accessories in the provided sturdy carrying case when not in use. Keep it in a cool, dry place, away from direct sunlight and extreme temperatures.
- Probe Care: The stainless steel probe is designed to resist rust. However, ensure it is clean and dry before storage to maintain its integrity.
- Overload Protection: The PB100 features built-in overload protection. If the current exceeds 8A, the tester will automatically break the circuit to prevent damage to itself or the vehicle. This is a safety feature and indicates an excessive load or short circuit.

Image: A visual explanation of the PB100's intelligent overload protection, showing how it automatically breaks the circuit when current exceeds 8A to prevent damage.

Image: Close-up view highlighting the PB100's advanced features, including the stainless steel probe, searchlight, LCD backlight, and insulated alligator clip.
Troubleshooting
This section provides guidance for common issues encountered during the use of the ANCEL PB100. The device is designed to assist in diagnosing various electrical problems.
- Device Not Powering On:
- Ensure the power connection (battery clips or cigarette lighter adapter) is secure and making good contact.
- Verify the vehicle's battery has sufficient charge (12V or 24V system).
- Check the vehicle's fuse for the cigarette lighter if using that power source.
- Inaccurate Readings:
- Ensure the probe tip is making firm contact with the test point.
- Verify the ground connection is solid and free of corrosion.
- Clean the probe tip if it appears dirty or corroded.
- Overload Protection Triggered (Current Exceeds 8A):
- This indicates a short circuit or excessive current draw in the circuit being tested.
- Immediately disconnect the probe.
- Investigate the circuit for shorts or faulty components before retesting.
- Difficulty Locating Shorts/Opens:
- Utilize the long 20ft extension cable to reach all areas of the vehicle.
- Systematically test sections of the circuit to isolate the fault.
- The audible tone indicator can assist in no-look scrolling and identifying circuit status.
Specifications
| Feature | Specification |
|---|---|
| Model | PB100 |
| Operating Voltage | 12V - 24V DC |
| Maximum Operating Voltage | 60 Volts |
| Rated Current | 1-10 Amps |
| Overload Protection | Automatic circuit break at 8A |
| DC Voltage Range | 0-65V |
| Resistance Range | 0-100 kΩ |
| Frequency Response (Sound Passage) | 0Hz to 10kHz |
| Cable Length | 20ft (main) + 20ft (extension) |
| Item Weight | 1215 Grams (approx. 2.68 pounds) |
| Dimensions (L x W x H) | 10.2 x 8.7 x 2.9 inches |
| Operating Temperature | 32°F to 140°F (0°C to 60°C) |
| Certifications | CE, CSA, ETL, FCC, UL |
Warranty and Support
ANCEL provides comprehensive support for the PB100 Automotive Power Circuit Probe Tester.
- Warranty: The ANCEL PB100 comes with a 1-year warranty.
- Accessory Replacement: If any parts of your PB100 tester are lost, you can contact ANCEL customer service for replacements.
- Return Policy: A hassle-free 60-day no-reason-asked return policy is available.
- Technical Support: A dedicated technical support team is available to assist with any quality issues or operational questions. Support is typically provided within 24 hours.
- Contact: For any questions, concerns, or assistance, please do not hesitate to reach out to ANCEL customer service.





