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Electric Ported Vacuum Switch
- The PVS section should be checked as a regular three port PVS. To check the electrical section, connect a self powered test light to switch. See Fig 1. On the normally closed switch with the coolant temperature cold the light should glow.
Courtesy of FORD MOTOR CO.
- With coolant temperature hot (235°F), the light should not light. On the normally open switch with coolant temperature cold, the light should not light. With coolant temperature hot (235°F) the light should glow. If either section of the electric PVS fails to operate as described, replace switch.