1. Disconnect the socket from the antenna. |
2. Check whether tension of the rechargeable battery on contacts 1 and 3 sockets moves constantly. |
 |
3. Check whether tension of the rechargeable battery on contacts 1 and 2 sockets moves at inclusion of ignition and the radio receiver. |
4. Give additional wires tension of the rechargeable battery on contacts 3 and 2 and check whether the antenna engine works (the antenna has to start). |
 |
5. Check whether the antenna engine after a detachment of contact 2 from the battery works (the antenna has to move down). |