Charcoal Canister
WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
- Visually check charcoal canister for cracks or other damage.
- Blow air at .06 psi (.39 kPa) into vent port with purge port closed with your finger. Check that air flows from lower air inlet port. See Fig 1.
- Blow air at .06 psi (.39 kPa) into vent port with air inlet port closed. Check that air flows from purge port. See Fig 1.
- Apply vacuum of 1.01 in. Hg (3.43 kPa) to vent port while holding lower air inlet port closed. Check that air is sucked into purge port. See Fig 1.
- If operation is not as specified, replace charcoal canister.
- To maintain air tightness, perform following checks with CCV terminal port held closed by hand. You will need assistance for this. Apply vacuum of 1.01 in. Hg (3.43 kPa) to purge port with vent port and both air inlet ports closed. See Fig 1. Check that vacuum is sustained for one minute.
- Remove air hose between ports "A" and "B". Hold closed vent port, purge port and air inlet ports. Apply vacuum of .42 in. Hg (1.42 kPa) into port "A". Check that air is sucked in from port "B". See Fig 2.
- Apply vacuum of .42 Inch Hg (1.42 kPa) into port "A" with vent port, purge port and lower air inlet port held closed. Measure how long it takes for vacuum to drop. Vacuum drop time should be 10 seconds or more.
- If operation is not as specified, replace charcoal canister. Reinstall air hose between ports "A" and "B".
- Check vacuum switching valve for charcoal canister. See Vacuum Switching Valve For Charcoal Canister .