For 1990-2009 cars only
- Cover the pressure relief valve.
- Turn the vehicle's ventilation fan to high.
- Close all of the windows and the doors.
- Apply a soapy solution to all potential leak areas.
- Look for bubbles that reveal escaping air.
- Consider the following procedure as an alternative to pressurizing the vehicle's interior:
| 6.1. | Use an air compressor air hose. |
| 6.2. | Do not exceed 207 kPa (30 psi). |
