Attention! Before removing, put a label on the vacuum hose so as not to confuse it in the future.
1. Disconnect the vacuum hoses (with black and red stripes) from the solenoid valve.
2. Disconnect the wiring connector.
3. Connect the vacuum pump to valve nipple A (pic. 6.8).
Pic. 6.8. Purge Solenoid Valve Leak Test
4. Check the tightness of the valve with and without accumulator voltage connected to the solenoid valve:
- when connected to the battery terminals - the vacuum decreases;
- without attaching to the terminals - the vacuum is maintained.
5. Measure the resistance between the solenoid valve terminals (pic. 6.9). Rated value - 36-44 Ohm (at 20°C).
Pic. 6.9. Checking the resistance between the solenoid valve terminals