The No.3540 Circuit Relay Tester is an essential tool designed for automotive technicians and enthusiasts. This device allows for the precise testing of three common types of vehicle relays, providing critical insights into their operational condition. The testing results are conveniently displayed via LED indicators, aiding technicians in diagnosing relay-related issues within the vehicle's electrical system.

Key Features:
- Versatile Relay Testing: Capable of testing relays in both 12V and 24V vehicle systems. Simply connect a 12V battery for 12V relays and a 24V battery for 24V relays.
- Compatibility: Supports both 4-pin and 5-pin relays, making it suitable for a wide range of automotive applications.
- Problem Pin Indication: Identifies faulty pins effectively, streamlining the diagnostic process.
- User-Friendly Design: Equipped with coloured wires corresponding to pin numbers for easy identification and connection.

Technical Specifications:
- Approvals: Meets CE and UKCA certification standards, ensuring safety and compliance with industry regulations.
- Power Supply: Operates using a vehicle battery power supply (12V for 12V relays, 24V for 24V relays).

Applications:
The Circuit Relay Tester is perfect for automotive professionals who need to quickly and accurately assess the condition of vehicle relays. Its compatibility with multiple relay types and voltages, along with clear LED indications, makes this tool indispensable for troubleshooting electrical issues.

Usage Instructions:
1. Power Connection: Connect the tester to a 12V or 24V vehicle battery, depending on the relay being tested.
2. Relay Connection: Use the appropriate relay adapter to plug the relay into the tester.
3. Diagnosis: Observe the LED indicators to determine the condition of the relay and identify any problematic pins.
4. Analysis: Utilise the coloured wires and pin numbers to match the relay configuration, ensuring accurate diagnostics.

Why Choose the No.3540 Circuit Relay Tester?
- Reliability: Trusted by professionals for accurate and reliable relay diagnostics.
- Ease of Use: Intuitive design makes it accessible for both experienced technicians and beginners.
- Efficiency: Quickly identifies relay issues, saving time and effort in the diagnostic process.

Enhance your automotive toolkit with the No.3540 Circuit Relay Tester, an invaluable device for maintaining and diagnosing vehicle electrical systems effectively and efficiently.

Specifications:

Working Temperature
0 ~ 50°C ( 32 ~ 122°F ); < 85%RH
Storage Temperature
-20 ~ 60°C ( -4 ~ 140°F ); < 85%RH
Operation

A. Relay Tester

Base on the specification of the relay, user needs to select the correct relay pin type by switch the“4 pin / 5 pin switch” to its corresponding position, and connect the battery clips to 12V or 24V vehicle battery
(12V battery for 12V relay; 24V battery for 24V relay).
Install the relay into the relay socket, and press and hold the “Testing” button to start the test. The test result indication will keep flashing during the tester; do not release the testing button until the result has shown by the “Test result indication”.

Possible result is as below:

(1) If “OK” lights up, it means the relay is function correctly.

(2) If “87”indication stays light, it means pin No. 87 is short circuit with other pins.
      If “87” indication is flashing, it means the connection of pin No. 87 is poor.
      This may be open loop or poor conductivity due to oxidization. For both conditions, user has to replace
      the relay and check the relative connectors; make sure the voltage passing through the pin is normal.

(3) If “87a” indicationstays light, it means pin No. 87a is short circuit with other pins.
      If “87a” indication is flashing, it means the connection of pin No. 87a is poor.
      This may be open loop or poor conductivity due to oxidization.
      For both conditions, user has to replace the relay and check the relative connectors; make sure the
      voltage passing through the pin is normal.

(4) If “coil” indication stays light, it means the coil within the relay is damaged.
      Please replace the relay, and check the specification of the relay; make sure the voltage meets the requirement of the vehicle.

CAUTION:
* To prevent damaging the relay and to obtain an accurate test result, please make sure the specified voltage of the relay has satisfied the vehicle battery connected with the tester.
* Make sure the “4 pin / 5 pin switch”position meets the pin number of tested relay.
* Do not press and hold the “TEST”button after the test result has appeared.

B. Relay Adapter 

1. Plug the relay adapter into the relay tester.
2. Connecting the alligator clips of the adapter with the relay according to the pin number, and press the “TEST” button to start the test.

CAUTION:
* Make sure the pin number on the relay adapter and the connected relay are the same, otherwise the testing result will be incorrect.
* In order to prevent short circuit between alligator clips, make sure the insulation jacket of the alligator clips has been pushed to the position where no conductor is under exposure.

 

Barcode # 9322159935400