Pathfinder 4WD V6-4.0L (VQ40DE) (2006)
Use a suitable vacuum pump to check. Connect to brake booster side of check valve.
Check valve specification: Vacuum decrease should be within 1.3 kPa (10 mmHg, 0.39 inHg) for 15 seconds under a vacuum of -66.7 kPa
(-500 mmHg, -19.69 inHg)