D 250 Pickup L6-359 5.9L DSL (1992)
Cruise Control Vacuum Solenoid: Description and Operation
PURPOSE
The electronic controller uses input signals from various inputs to determine when the solenoids should be activated.
PURPOSE
The vent and vacuum speed control solenoids are controlled by the electronic controller. The electronic controller controls them by applying or
removing the ground from their respective circuits.
The vacuum solenoid maintains vacuum at a specific pressure to set, resume, or accelerate the speed control system. The vent solenoid is used to
vent vacuum during deceleration, when the brakes are applied, or when the transmission is shifted into PARK or NEUTRAL.
