OBDResource CP10 Automotive Power Circuit Probe Tester User Manual

1. Product Overview

The OBDResource CP10 automotive electrical system activator is suitable for 0V - 80V automotive power circuit diagnosis. This product is compact in design and powerful in function. It has reverse connection and overload protection. The tool probe can be used to test conductivity and positive and negative level detection, activate components and other functions, can quickly detect short circuits and broken wires in vehicle electrical system components. It helps users understand vehicle problems faster and more accurately. It is an efficient and advanced testing tool that can greatly improve users' work efficiency.

Functions: Voltage Test/ Component Activation/ Continuity Test/ Ground detection /Tracking and Locating Short Circuit/ Positive and Negative Detection.

2. Specifications

2.1 Panel Explanation

The CP10 features a clear layout for easy operation and understanding:

1. Probe: A contact wire or component used for testing.
2. LED Light: Provides lighting in dark areas or at night.
3. Display: Displays measured values.
4. LED Indicator Light: Used to display test results.
5. Power Switch: Used to activate and test the functionality of electrical components guided by positive and negative current probes.
6. Buzzer: A beep sounds based on the test results.
7. Battery Clip: Connect the battery to power the device.
8. Ground Clamp: Ground wire auxiliary test function.
9. Main Cable: 5m main cable.

Figure 1: CP10 Labeled Components

2.2 Parameter Information

Figure 2: CP10 Product Dimensions

3. Setup

3.1 Unboxing and Initial Connection

Upon receiving your OBDResource CP10, carefully open the packaging. The box should contain the CP10 Automotive Circuit Tester unit and a User Manual.

Figure 3: Package Contents

To power the device, connect the red battery clip to the positive terminal of your vehicle's battery and the black battery clip to the negative terminal. Ensure a secure connection.

Figure 4: Connecting to Vehicle Battery

3.2 Quick Self-test

Before you start testing any circuit or component, it is crucial to confirm that your CP10 device is in good working condition by performing a self-test. This product is powered by the external battery or car battery.

1. Attach the red clip to the battery's positive terminal and the black clip to the battery's negative terminal.
2. Press the power switch forward to activate the positive voltage probe. The red LED will light up, and the voltage value will be displayed on the screen. Release the switch, and the red LED will turn off.
3. Then, press the power switch backward to activate the negative voltage probe. The green LED will light up. Release the switch, and the green LED will turn off.

If the LED lights and display illuminate as described, the device is in good condition and will work properly.

Figure 5: Quick Self-test on Car Battery

4. Operating Instructions

4.1 Positive and Negative Test (Bidirectional Circuit Test)

When the device is connected to vehicle power, the front LED lights will power on. The CP10 can detect voltage polarity:

• When the probe contacts a positive circuit, the red LED will light up, and the voltage value will be displayed on the screen.
• If the probe contacts a negative circuit, the green LED will light up, and the buzzer will sound (screen voltage shows 0.0V).

Figure 6: Bidirectional Circuit Test

4.2 Component Activation

The activation function can be used to activate components such as the starter fuel pump, solenoid valve, blower, cooling fan, headlights, etc.

1. Connect the ground auxiliary clamp to the negative terminal of the testing part.
2. Connect the probe contact to the positive terminal of the testing part.
3. Press the positive activation button (+). The probe will output positive voltage, the voltage value will be displayed on the screen, and the red LED will light up. The testing part will then be activated.

The probe can output positive and negative voltages. Pressing the (+) button outputs positive voltage (red LED lights up, voltage displayed). Pressing the (-) button outputs negative voltage (green LED lights up, buzzer sounds). The maximum activated output current is 8A. Equipment exceeding 8A will activate the trip protection function, and the equipment will trip.

Figure 7: Component Activation Example

4.3 Continuity Test

By using the probe tip and auxiliary ground wire, continuity testing can be performed on wires and components that are disconnected from the vehicle's electrical system. If the continuity test passes, the green LED will light up.

NOTE: Do not press the activation switch during the continuity test.

Figure 8: Continuity Test Setup

4.4 Ground Detection

Use the probe to make contact with the negative terminal of the component. The device's green LED will light up when the ground test passes.

NOTE: Do not press the activation switch during ground detection.

Figure 9: Grounding Test

4.5 Test Trailer Lights and Connectors

Connect the device to the battery, clamp the auxiliary ground wire's clip to the trailer ground, and connect the probe to the socket of the trailer connector. Then press the (+) button to test the function and direction of the trailer lights.

Figure 10: Testing Trailer Lights and Connectors

4.6 Jumper Function

The black clip and the auxiliary ground wire are directly connected through the device. The red clip is disconnected from the vehicle battery, and the device can be used as a long jumper.

Please take care to avoid short circuits and overloads, as the jumper function is not protected by the unit's circuit breaker.

Figure 11: Jumper Function

5. Troubleshooting

5.1 Overload Protection

If the current exceeds 8A, the circuit tester will automatically trip and give out a buzzer warning. The power switch can be replaced if needed. This feature extends the service life of the device and protects the safety of users.

Figure 12: Overload Protection Mechanism

5.2 Trace and Locate Short Circuits

In most cases, a short circuit will manifest itself as a tripped fuse or electrical protective device (such as a tripped circuit breaker). Follow these steps to trace and locate a short circuit:

1. Trace the wire harness by removing the blown fuse from the fuse box, touching each fuse contact with a probe, noting the number or color of the wire, and following the wire as far as possible.
2. If you are tracing a brake light short, you must first go through the threshold of the wire, find the color or number of the wire and label it.
3. If the device shows a green LED, that means the wires are shorted. Carefully cut the wires and touch each end of the wire with a probe. Follow the wire to the correct location. Repeat this step toward the short circuit until you find the exact location of the short circuit. Threshold the wire, find the color or number of the wire and mark it.

6. Maintenance

To ensure the longevity and accurate performance of your OBDResource CP10, follow these general maintenance guidelines:

• Cleaning: Regularly wipe the device with a soft, dry cloth. Avoid using abrasive cleaners or solvents that could damage the casing or display.
• Storage: Store the tester in a dry, cool place away from direct sunlight and extreme temperatures. Keep it in its original packaging or a protective case when not in use to prevent damage to the probe tip and cables.
• Cable Care: Avoid sharp bends or kinks in the main cable and battery clips. Inspect cables for any signs of wear, fraying, or damage before each use.
• Probe Tip: Ensure the probe tip remains sharp and clean for accurate contact.
• Power Switch Replacement: The toggle switch is detachable and replaceable. If the switch is damaged or worn, it can be carefully removed and a new one inserted. When knocking it out, take a paper pad to prevent scratches.

7. User Tips

• Always perform the quick self-test before starting any diagnostic work to ensure the tool is functioning correctly.
• Utilize the built-in LED light when working in dimly lit areas of the engine bay or under the vehicle.
• For component activation, ensure the component is safely disconnected from the main circuit if there's a risk of damage or unintended operation.
• When tracing short circuits, proceed systematically and mark wires as you go to avoid confusion.
• The 5m main cable provides ample reach; take advantage of it to avoid repositioning the battery clips frequently.

8. Support & Contact

For technical support, warranty information, or any inquiries regarding your OBDResource CP10, please contact the manufacturer:

• Manufacturer: OBDResource Electronics Co., Ltd
• Email: info@obdresource.com
• Tel: +86-755-29071623
• Website: www.obdresource.cn
• Address: Xinniu Community, Longhua District, Shenzhen, CN

A digital version of this user manual is available. You can access it by scanning the QR code below or visiting the manufacturer's website.

Scan for Digital User Manual (PDF)