| 1. Disconnect the battery from weight. |
| 2. Hook and get the switch from the panel and disconnect the socket. |
| 3. Check existence of a chain between conclusions 1 and 3 sockets from the relay (see rice. Numbering of conclusions of the socket of the switch of heating of back glass). If between conclusions there is no chain, check a lamp. |
| 4. Check the heater timer. For this purpose connect (+) - a battery conclusion to a conclusion 2, and (-) - a conclusion – to a conclusion 4 switches, between (+) - a conclusion of the battery and a conclusion 6 connect the 3,4 W lamp (see rice. Check of operation of the timer of a heater of back glass). Press the switch, – test and control lamps of the switch have to light up and 12–18 min. later to go out. Otherwise replace the switch. |
| 5. Check a chain from the switch socket. |
|
6. Between a conclusion 4 and weight the chain has to be constantly. |
| 7. When the ignition key is in the provisions ACC or LOCK between conclusions 2 or 6 and weight tension has to be absent. |
| 8. When the ignition key is the situation ON by conclusions 2 or 6 and tension has to be weight. |
| 9. Connect conclusions 4 and 6 and be convinced of normal work of a heater. |
| 10. If results of one of checks negative, the switch replace. |
|
11. Check the heater relay, – between conclusions 1 and 2 there has to be a chain. At a zapityvaniye of conclusions 1 and 2 (12 V) the chain has to be between conclusions 3 and 5. The relay is in the block of safety locks in salon. |
| 12. If results of one of checks negative, replace with the relay. |