Liberty 4WD V6-3.7L (2009)
Gear Sensor/Switch: Description and Operation
MP3022 Transfer Case
Mode Sensor - Description
DESCRIPTION
MP3022 TRANSFER CASE
The transfer case Encoder (3) provides the Final Drive Control Module (FDCM) feedback about the position of the transfer case. The sensor consists of
a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The FDCM must
supply 5VDC (+/- 0.5v) to the sensor whenever the FDCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored
when the ignition is in the RUN position and for 10 seconds after the ignition is shifted to the OFF position. The sensor is mechanically linked to the
shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 20 mA of current during operation.
Mode Sensor - Operation
OPERATION
During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active.
The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 4.75 V or if it is less than 0.25 V.
NOTE: All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to
change.
The DTCM shall consider Transfer Case position based on the MODE SENSOR VOLTAGES table listed below:
MODE SENSOR VOLTAGES