Pressure Switch (Dual Switch): Inspection

WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.

Connect the manifold gauge to the service valve on the high-pressure side.
Remove the pressure switch harness connector. Using a circuit tester, inspect the ON-OFF operation of the pressure switch.

Fig 1: Removing Pressure Switch Harness Connector

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: High & Low Pressure Switch Chart

Courtesy of SUBARU OF AMERICA, INC.