Operation CHARM: Car repair manuals for everyone.

Transfer Case: Description and Operation

Electronic Shift Description:





The Borg-Warner 13-50 electronic shift transfer case transfers power from the transmission to the front and rear axle assemblies when electrically actuated by either of the two switches mounted in the push-button control panel. The electronic control module will analyze information from the transfer case shift position sensor to verify its current position. The electronic control module also analyzes input information from the speed sensor and the clutch interlock switch (M/T) (or neutral safety switch (A/T) depending upon transmission application). When all conditions are met, the electronic control module will command the electronic shift motor to execute the desired function. After the shift occurs and the motor is turned off, the electronic control module resumes looking at the inputs from the shift position sensor to determine if the transfer case is in the position selected by the operator. The electronic control module illuminates the push-buttons in the control panel indicating that the desired function has been completed.