For 1990-2009 cars only
- Cover the pressure relief valve.
- Turn the vehicle's ventilation fan to high.
- Close all windows and doors.
- Apply a soapy solution to all potential leak areas.
- Look for bubbles that reveal escaping air.
- Consider the following as an alternative to pressurizing the vehicle's interior:
| • | Use compressed air |
| • | Do not exceed 207 kPa (30 psi) |
