General Description

Transfer Case Electric Shift Motor:

PURPOSE
The transfer case is used to provide a means of power flow to the front axle. The transfer case also provides a means of disconnecting the front axle, providing better fuel economy and quieter operation when the vehicle is driven on roads where four wheel drive is not required. In addition, the transfer case provides an additional gear reduction when placed in low range. This is useful when difficult off road conditions are encountered.

OPERATION
A Transfer Case Control Module (TCCM), mounted on the back of the vehicle Electronic Control Module (ECM) housing, controls the electric shift motor in response to control signals initiated by the vehicle operator. The shift motor rotates the sector shaft within the transfer case in response to commands from the vehicle operator through the TCCM.