Engine Control Module

The Engine Control Module monitors the Ride Control Switch as an input. The Engine Control Module applies 5 volts to the switch resistor ladder and monitors the signal voltage from the switch. As the switch is rotated to the left or right, current flows through different resistors and the voltage monitored at the Engine Control Module also changes. The Engine Control Module uses this voltage change to determine if the rotary knob is in the at rest position or has been turned left/right. The Engine Control Module will change the ride control based on this input.

When a ride control change is requested by the drive through the Ride Control Switch, the Engine Control Module will broadcast a message to all modules indicating the requested ride control. Control modules that are involved in changing their operation based on differing ride controls will then change their operating values. The Engine Control Module may also change operating values based on the ride control, such as a more or less aggressive throttle profile.