| 1. On the cars "Toyotas 4 Runner/Hilux/Surf" 2 sound signals established on both parties from a radiator are provided. |
| 2. For check disconnect the socket and directly connect the battery to a signal. In the absence of a sound replace a signal. |
| 3. If the sound is, then check tension on a conclusion when pressing the signal button. In the presence of tension check connection with weight. |
| 4. If there is no tension, then check the relay. It is necessary to consider that relays of a sound signal generally have the 4 or 3 conclusion (3-output relays have external connection with weight). |
| 5. If relays are serviceable, then check tension on relay conclusions. If there is no tension, then check wires from a safety lock to the relay. |
| 6. If on relay conclusions tension is, then press the button of a signal and check a chain of connection with weight between the relay and the button. If there is no break, then replace the signal button. |
| 7. If via the button the chain on weight becomes isolated, then check existence in a chain from the relay for the button of break or short circuit. |
