Pic. 2.436. Resistance test
Measure the resistance between the terminals with an ohmmeter (pic. 2.436).
Verification conditions
If the resistance is out of specification, replace the VRV vacuum distribution valve.
Check that the VRV vacuum distribution valve is not shorted to ground.
Pic. 2.437. Checking the absence of electrical conductivity
Measure with an ohmmeter and check that there is no electrical continuity between all terminals and the body (pic. 2.437).
Verification conditions
If there is electrical conductivity, replace the VRV vacuum distribution valve.
Check the tightness of the valve.
Pic. 2.438. Valve leak test
Create a vacuum in the vacuum inlet. Verify that the gauge needle shows a vacuum of 66.7 kPa or more (pic. 2.438).
If the vacuum is not within specification and the VRV vacuum distribution valve is leaking, replace it.
Check functionality.
Connect 4 1.5 V batteries in series.
Pic. 2.439. Health check
Make sure that when creating a vacuum in the inlet vacuum channel, the instrument pointer does not move (pic. 2.439).
If the valve does not operate normally, replace the VRV vacuum distribution valve.