Vacuum Switching Valve Assy

INSPECT VACUUM SWITCHING VALVE ASSEMBLY







a. Check the resistance.
1. Using an ohmmeter, measure the resistance between the terminals.
If the resistance is not as specified, replace the vacuum switching valve.







b. Check the vacuum switching valve for ground.
1. Using an ohmmeter, check the resistance between each terminal and the body.
If the resistance is not as specified, replace the vacuum switching valve.




c. Check the operation.
1. Check that air flows from port E to the filter.
If the operation is not as specified, replace the vacuum switching valve.




2. Apply battery positive voltage across the terminals.
3. Check that air flow from port E to port F.
If the operation is not as specified, replace the vacuum switching valve.