Electronic Control Module

This module controls the operation of the transfer case using inputs from the pushbutton controls, speed sensor and shift position sensor. The module is equipped with a self-test capability.

When either of the 2 switches in the overhead console are depressed, the electronic control module will analyze information from the transfer case shift position sensor to verify its current position. The module also receives data from the speed sensor and clutch interlock switch, or Neutral safety switch depending on application.

If all design conditions are met, the electronic control module will signal the electric shift motor to shift gear positions. After shift takes place, the module will read the input from the shift position sensor to determine if transfer case is in desired position. The electronic control module also will illuminate pushbuttons on overhead console indicating shift is completed.