Examination
1. Check the integrity of the relay contact circuit at contacts 5 ("+") and 1 ("-").

| Relay winding (contacts 2 and 4) | Chain condition |
| The winding is off | No conductivity |
| The winding is on | There is conductivity |
2. If the relay is faulty, replace it. Tightening torque: 7–11 N·m.
