Circuit Description

The transfer case encoder is an analog sensor that returns a signal that represents the physical position of the transfer case sector shaft. This signal represents the mode or range position that the transfer case is currently in. This sensor is made up of the following 3 circuits:

• 5 volt reference circuit
• Encoder signal circuit
• Encoder low reference circuit

This DTC detects an out of range reading from the encoder signal or a short to voltage on the 5 volt reference circuit.