EVAP Vacuum Switching Valve
- Remove EVAP Vacuum Switching Valve (VSV). See EVAP VSV LOCATION table. See Figure.EVAP VSV LOCATION
Application Location Previa Bolted To Mounting Bracket On Charcoal Canister NOTE: EVAP VSV may also be identified by wire colors. See appropriate wiring diagram in WIRING DIAGRAMS article. - Using ohmmeter, ensure continuity exists between electrical terminals on EVAP VSV and resistance is 30-34 ohms at 68°F (20°C). Ensure no continuity exists between each electrical terminal and the body of the EVAP VSV. Replace EVAP VSV if continuity exists between electrical terminal and body of EVAP VSV.
- To test EVAP VSV operation, apply air pressure to port "E". Ensure air does not flow from port "F". Perform STEP 1. See Fig 1.
- Apply battery voltage and ground to electrical terminals on EVAP VSV. Apply air pressure to port "E". Ensure air flows from port "F". Perform STEP 2. See Fig 1. Replace EVAP VSV if defective.