Circuit Description

The shock solenoid valve is driven ON and OFF by the suspension control module. To activate the solenoid it is initially subjected to full battery voltage for a short period of time. Once the solenoid is pulled-in the supply voltage is pulse width modulated (PWM). The amount the shock solenoid valve is activated is based on inputs from the driver (Tow/Haul Switch), road inputs, and the powertrain control module.