EGR Vacuum Switching Valve (VSV)
NOTE:
When testing EGR VSV, it may be necessary to use proper illustration to determine component location. See Figure.
- Disconnect electrical connector from EGR VSV. See EGR VSV LOCATIONS table. Using ohmmeter, check that continuity exists between electrical terminals on EGR VSV and that resistance is within specification. See EGR VSV RESISTANCE SPECIFICATIONS table. Replace EGR VSV if no continuity exists or resistance is not within specification.
- Ensure no continuity exists between each electrical terminal and the body of EGR VSV. Replace EGR VSV if continuity exists between electrical terminal and the body of EGR VSV.
- To test EGR VSV operation, apply air pressure to port "E". Ensure air flows from port "G". Perform STEP 1. See Fig 1. Apply battery voltage and ground to electrical terminals on EGR VSV.
- Apply air pressure to port "E". Ensure air flows from filter and not from port "G". Perform STEP 2. See Fig 1. Replace EGR VSV if defective. Reinstall EGR VSV.
EGR VSV LOCATIONS
| Application | Location |
|---|---|
| RAV4 | On Cylinder Head, Below Air Intake Chamber |
EGR VSV RESISTANCE SPECIFICATIONS
| Application | Ohms @ 68°F (20°C) |
|---|---|
| RAV4 | 33-39 |