Both High- and Low-pressure Sides are Too High

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Abnormal Pressure Trouble Diagnosis (Both High- And Low-Pressure Sides Are Too High)

Courtesy of NISSAN MOTOR CO., U.S.A.