| 1. Disconnect the negative battery terminal. |
| 2. Disconnect the connector from the solenoid valve. |
| 3. Measure the resistance between terminal 7 of the connector and "weight". Resistance: 4,1-5,1 Ohm |
| 4. If there is no connection, check the electrical circuit for an open or short circuit or replace the pressure control valve. |
| 5. Connect to the solenoid valve. |
| 6. Connect the cable to the negative terminal of the battery. |