Rear Drive Axle Description and Operation

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.

The K164 Differential Control Module's function is to control the electronic limited slip differential. The K164 Differential Control Module receives torque request through CAN-Bus and applies torque to the rear differential.

The differential system contains the following main components:

M135 Differential Lock Motor
Position Sensor (internal to motor)
Temperature Sensor (internal to motor)

The K164 Differential Control Module is located in the trunk compartment. The locking torque causes a multiplication of wheel torque, which can be used to improve traction and/or vehicle dynamics. The M135 Differential Lock Motor is actuating a multidisc friction clutch via a reduction gear set. The M135 Differential Lock Motor is used to close and open the clutch. The K164 Differential Control Module controls the M135 Differential Lock Motor. The K164 Differential Control Module gets the required information from the sensors of the differential system and from the CAN-Bus.