| 1. The most reliable results are yielded by check with use of the scheme of turning on of the relay. If the scheme of inclusion is absent, then execute checks taking into account the following data. |
| 2. Couple of conclusions of any relay are connected to the coil providing operation of the relay. Other conclusions become in pairs isolated or disconnected at a coil zapityvaniye. |
| 3. As a rule, distributing of contacts is specified on the relay case. |
| 4. Connect one of relay coil conclusions to a positive conclusion of the battery through a wire with a thin delay as a safety lock. Connect the second conclusion to weight. After connection the click has to be listened. If there is no click, then change polarity of connection (polarity of connection matters on some relays). |
| 5. Check existence of a chain between relay conclusions according to marking on the case. |
| 6. If results of checks negative, then replace with the relay. |
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