Check Valve

Remove check valve and connect vacuum pump to Dark Blue nipple. When vacuum is applied, vacuum should leak. Connect vacuum pump to White nipple. When vacuum is applied, vacuum should hold.

Fig 1: HAC System (California)

Courtesy of CHRYSLER MOTORS.

Fig 2: HAC System (Cordia & Tredia - Federal)

Courtesy of CHRYSLER MOTORS.

Fig 3: HAC System (All Others - Federal)

Courtesy of CHRYSLER MOTORS.