Parking Brake System: Description and Operation: Overview

Parking Brake

OVERVIEW
The EPB (electronic parking brake) is an electrically actuated system that operates the calipers on the rear brakes. The system consists of:
- An EPB (electronic parking brake) switch.
- Two EPB (electronic parking brake) actuators.
- A clutch position sensor (manual transmission vehicles only).
- An EPB (electronic parking brake) module.
- Two warning indicators.
The EPB (electronic parking brake) is controlled by the EPB (electronic parking brake) module, which uses the EPB (electronic parking brake) actuators to apply and release the rear disc brakes. Operation of the EPB (electronic parking brake) is initiated by the EPB (electronic parking brake) switch and software within the EPB (electronic parking brake) module. The EPB (electronic parking brake) has the following operating modes:
- Static apply/release.
- Gradient dependant apply.
- Ignition off apply.
- DAR (drive away release).
- Automatic transmission apply/release.
- High temperature re-clamp.
- Driver exit warning.
- Dynamic apply.
Signals from other vehicle systems for operation of the EPB (electronic parking brake) are transmitted to the EPB (electronic parking brake) module on the high speed CAN (controller area network) bus.