| 1. On cars "Toyota 4 Runner/Hilux/Surf" it is provided 2 sound signals established on both parties from a radiator. |
| 2. For check disconnect a socket and directly connect to a signal the battery. In the absence of a sound a signal replace. |
| 3. If the sound is, check up pressure on a conclusion by pressing the signal button. In the presence of pressure check up connection with weight. |
| 4. If pressure is not present, check up the relay. It is necessary to consider that relays of a sound signal basically have 4 or 3 conclusion (3-vyvodnye relays have external connection with weight). |
| 5. If relays are serviceable, check up pressure on relay conclusions. If pressure is not present, check up wires from a safety lock to the relay. |
| 6. If on conclusions of the relay pressure is, press the button of a signal and check up a chain of connection with weight between the relay and the button. If breakage is not present, replace the signal button. |
| 7. If through the button the chain on weight becomes isolated, check up presence in a chain from the relay on the breakage or short circuit button. |