OBDResource RT100 Automotive Relay Tester User Manual

1. Introduction

The OBDResource RT100 is a professional automotive relay tester designed to diagnose the health and function of 12V and 24V automotive relays. It supports both 4-pin and 5-pin relays and automatically identifies their configuration. The device performs multiple test cycles, checking the relay coil and contacts for proper operation. Test results are indicated by a dual-color LED (green for pass, red for fail) and an audible buzzer.

2. Product Overview

The RT100 features a compact design with intuitive controls and indicators. Below is a diagram and description of its main components:

1. Relay Pin Sockets: Dedicated slots for inserting 4-pin and 5-pin relays for testing.
2. LED Indicator: Displays the device's status (e.g., testing in progress, pass, fail, low battery).
3. Toggle Switch: Used to select between 4-pin and 5-pin relay testing modes.
4. Test Button: Press to initiate the relay testing process.
5. ON/OFF Key: Powers the device on or off.

3. Specifications

4. Setup

4.1 Battery Installation

The RT100 requires 3 AA batteries for operation. Follow these steps to install them:

1. Locate the battery compartment on the back of the device.
2. Open the battery compartment cover.
3. Insert 3 AA batteries, ensuring correct polarity (+ and - terminals). Do not invert the batteries.
4. Close the battery compartment cover securely.

4.2 Type-C Power Supply

Alternatively, the RT100 can be powered via a Type-C USB cable, offering flexibility for continuous use or when batteries are unavailable.

1. Connect one end of a Type-C USB cable to the Type-C port on the RT100.
2. Connect the other end of the Type-C USB cable to a power source such as a power bank, power adapter, or laptop.

5. Operating Instructions

Follow these steps to test an automotive relay using the RT100:

1. Power On: Press the ON/OFF key to turn on the device. The green LED indicator will light up, and the buzzer will emit a short 'tick' sound, indicating the device is ready.
2. Select Relay Type: Before inserting the relay, check its pin configuration (4-pin or 5-pin). Use the toggle switch on the RT100 to select the corresponding '4 PIN' or '5 PIN' position.
3. Insert Relay: Carefully insert the automotive relay into the appropriate pin sockets on the tester. Ensure the relay is seated firmly.
4. Perform Test: Press the 'Test' button. The device will automatically identify if it's a 12V or 24V relay and then perform 20 open and close detection actions. During this process, you may hear the relay clicking.
5. Interpret Results: After the test is complete, the buzzer will sound for 2 seconds.
   • A green LED light indicates that the relay is functioning normally (Pass).
   • A red LED light indicates that the relay is faulty or there was a wrong foot position selection (Fail).
6. Power Off & Remove Relay: Long press the ON/OFF key to power off the relay tester. Once powered off, carefully remove the relay from the tester.

6. Maintenance

To ensure the longevity and optimal performance of your RT100 Automotive Relay Tester, please observe the following maintenance guidelines:

• Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Storage: Store the device in a dry environment within the recommended storage temperature range of -20℃~50℃ (-4°F~122°F).
• Battery Care: If the device will not be used for an extended period, remove the AA batteries to prevent leakage and damage.
• Material: The device is made from ABS material with a silicone rubber oil spraying process, providing a durable and environmentally friendly finish.

7. Troubleshooting

7.1 Indicator Function Definition

7.2 Battery Indication

• Sufficient Power: The green indicator lights up in standby mode, and the test-ready state is entered.
• Low Battery: The green indicator lights up in standby mode, and the buzzer beeps twice every 5 seconds to enter the test-ready state.
• Insufficient Battery: The red indicator light is always on, the test button cannot be operated, and the buzzer will ring for 3 seconds.

Note: The battery level indicator only works when 3 AA batteries are used. When powered by Type-C, the default battery level indicator is sufficient.

7.3 Automatic Power Off

The device will automatically shut down if there is no operation for more than 1 minute to conserve battery power.

8. User Tips

• Power Source: Always use a strong, healthy, and fully charged battery or a reliable Type-C power source. A weak power supply can lead to inaccurate test results or the device indicating insufficient battery (solid red LED).
• Relay Compatibility: The RT100 can test relays regardless of whether their pin position is normally open or normally closed, as long as the pin configuration is correct for the selected mode.
• Avoid Conflicts: Do not attempt to test multiple relays simultaneously.

9. Manufacturer & Support

For technical support or inquiries, please contact the manufacturer: