Vacuum unit operating check

Check 3330DB

With the engine switched off, connect connector EX09 with transducer EX06 to the section of pipe between the actuator and the solenoid valve.

In the instrument environment, preselect the intake pressure measurement pressure gauge.

Start the engine and let it idle, then wait until the pressure level stabilizes.

The pressure reading should be between 450 and 500 mmHg (Phase 3 1910 engines).

The graphic acquisition of the pressure can be made by selecting the scale 2000 or 4000 mmHg.