Vacuum Switching Valve for Fuel Pressure Control Circuit

INSPECTION OF VSV
1. Check resistance of VSV:
(a) Using an ohmmeter, measure the resistance between the terminals.

Specified resistance: 30-50 ohms at 20°C (68°F)

If resistance is not as specified, replace the VSV.




(b) Using an ohmmeter, check there is no continuity between each terminal and the body.

If there is continuity, replace the VSV.




2. Check VSV operation:
(a) Apply battery voltage between the terminals.
(b) Check that the air from pipe E is flowing out through the air filter.




(c) Remove the battery test probes.
(d) Check that the air from pipe E is flowing out through pipe G.

If operation is not as specified, replace the VSV.