Transfer Case

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

The Electronic Transfer Case is a conventional transfer case that uses a shift motor to place the transfer case into the desired range. A multi-position switch selector is located on the dash panel in place of a manual shift lever located on the floor.

The Transfer Case shift motor is a bi-directional, 2-wire motor. When the motor is energized, one of the leads is 12-volts and the other is ground. Reversing the polarity of the motor changes the direction of the rotation of the motor. The motor has a low speed, high torque output.

The Transfer Case Mode Sensor consists of a magnetic ring and four Hall Effect transistors that convert the shaft position into a coded signal sent to the TCCM. The magnet forces the output of the Hall device low when it is passed over it. The Mode Sensor is supplied 5 volts and a ground from the TCCM and has four output lines that feed back to the TCCM.

The Transfer Case Selector Switch is a multi-position, multi resistance switch that tells the TCCM what range is commanded. The switch assembly also contains a separate Neutral Button and four indicators, one for each selectable range.