Circuit Description
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.
The transfer Case Encoder is an analog sensor that returns a signal that represents the physical position of the transfer case sector shaft. It represents the mode or range position which the transfer case is currently in. This sensor is made up of 3 circuits. It has a 5 V reference circuit, encoder signal circuit, and encoder return circuit.
This DTC detects an out-of-range reading from the encoder signal, a short to voltage on the 5 V Reg. Encoder circuit.