Toyota Celica 1986-1993 Repair Guide

Vacuum Solenoid Valves

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These valves are operated electrically by the ECU; when energized the valve opens a vacuum passage allowing engine vacuum to operate a component. The VSV is employed in several circuits; all are tested in basically the same fashion.



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Fig. Fig. 1 Testing VSVIdle-up solenoid valve on 2S-E engine shown



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Fig. Fig. 2 Testing VSVIdle-up solenoid valve on 3S-GE engine shown



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Fig. Fig. 3 Testing VSVA/C solenoid valve on 5S-FE engine shown



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Fig. Fig. 4 Testing VSV with filterT-vis solenoid valve on 3S-GTE engine shown

TESTING



  1. Disconnect the negative battery terminal, remove the electrical connector from the valve and remove the valve.
  2.  
  3. Test resistance between the valve terminals. Resistance should be approximately 30-35 ohms with the valve cold. If there is no continuity, the valve must be replaced. Check for continuity between either terminal and the VSV body. There should be no continuity.
  4.  
  5. Using jumper wires, energize the valve by connecting to the proper terminals. Air should now pass out the B or F port when blowing air into the A or E port.
  6.  
  7. With no power to the VSV, check that there is no air flow out of the B or F port when blowing into the A or E port. On valves with air filters, such as air control or T-vis, air may flow from the air filter when blowing into one port.
  8.  
  9. If any portion of the test procedure is not as specified, the valve must be replaced.
  10.  

 
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