Transfer Case Feed Harness Circuits

Transfer Case Feed Harness Location For Borg-Warner Model 13-54:

Electronic Transfer Case Feed Harness:

The electric transfer case feed harness contains ten wires that carry a variety of information to and from the Electronic Control Module (ECM).

A listing of the transfer case feed harness circuits and their functions follows:
1. The Electro-Magnetic Clutch Feed circuit provides a power signal to the clutch coil from the ECM when shifting from 2W to 4W.
2. CLOCKWISE rotation of the electric shift motor circuit provides power to drive the shift motor through the 2H-4H-4L sequence.
3. COUNTERCLOCKWISE rotation of the electric shift motor circuit provides power to drive the shift through the 4L-4H-2H sequence.
4. Actuation of the 4x4 switch while in 2H will cause a shift into 4H. Actuation of the 4x4 switch while in 4H will cause a shift into 2H.

NOTE: The module will not respond to actuation of the 4x4 switch while in 4L.

5. Actuation of the LOW RANGE switch while in 4H will cause a shift into 4L providing the following conditions are met:
a. Automatic transmission is in NEUTRAL position or the clutch pedal is depressed (manual transmission).
b. Vehicle speed is below 3 mph.
6. Actuation of the LOW RANGE switch while in 4L will cause a shift into 4H providing the above conditions exist.

NOTE: The module will not respond to actuation of the 4x4 switch while in 4L.

7. Shift position sensor return circuits provide the output information signals from the transfer case to the ECM. This information gives the ECM the correct position of the shift that turns the helical cam in the transfer case.