Parking Brake Actuator: Description and Operation

COMPONENT PARTS

Parking Brake Actuator






- The signal from the electric parking brake control module applies and releases the parking brake.
- The following components are integrated with parking brake actuator.
- When there is a malfunction that prevents the parking brake from being released, use the tool in the luggage room to manually turn and release the parking brake.
- When the emergency release cable is rotated counterclockwise while pressing it to parallel direction to axis with the cap removed, deceleration gear is rotated through release gear, which results in electric parking brake release.

CAUTION:
After manual release, perform "EHS/PKB" self diagnosis. When a malfunction is detected, erase self diagnosis result for "EHS/PKB".










- Generates rotation starting torque using electric parking brake control module.










- Decreases rotation speed and increases motor rotating torque.










- Maintains shaft rotating torque.










- The shaft is screw shaped and the equalizer is nut shaped. Rotating torque loaded to shaft is converted to cable tension through equalizer.










- Equalizes left and right cable tensions.
- Detects the tension applied to the rear cable and sends it to the electric parking brake control module.