High Altitude Compensator Solenoids (Justy Carbureted)

1. Connect ohmmeter leads between terminals of Black/White and White/Red wires of solenoid. If resistance is not 33-40 ohms, replace solenoid valve.
2. Ensure windings are not grounded. Apply battery voltage to valve terminals. Ensure vacuum passage opens and closes as voltage is applied and removed.
3. When solenoid is not energized, passage between "A" and "B" should be closed. See Fig 1 . When solenoid is energized, passage between "A" and "B" should be open. If solenoid valve does not operate properly, replace solenoid valve.

Fig 1: Testing High Altitude & Vacuum Line Control Solenoid(s)

Courtesy of SUBARU AMERICA, INC.