Optical Sensor: Operation

The optical sensor provides a speed/time signal to the power liftgate control module. The speed signal is generated from a trigger wheel, located inside the clutch housing of the drive unit assembly. When the optical sensor is installed in the clutch housing properly, the trigger wheel is positioned in the optical sensor. Hard-wired inputs to and from the liftgate control module are used to monitor the speed/time of the liftgate motor and clutch assembly.