Ford Focus manuals

Ford Focus Service Manual: Anti-Lock Control

Anti-Lock Braking

The ABS consists of the following components:

ABS aids in the prevention of wheel lock-up during braking events which will allow the driver to maintain steering control and stop in the shortest distance possible under most conditions. This is accomplished by the ABS module and HCU modulating brake fluid pressure to the affected brake caliper(s) and wheel cylinder(s).

When the ABS activates, the driver may notice the following operational symptoms:

Electronic Brake Distribution (EBD)

The ABS module and HCU incorporate a strategy called Electronic Brake Distribution (EBD) . The EBD strategy uses the HCU as an electronic proportioning valve to create a balanced braking condition between the front and rear wheels and minimize the chance of rear wheel lockup during hard braking. A slight bump sensation may be felt in the brake pedal when EBD is active.

ABS with AdvanceTrac®

The ABS with AdvanceTrac® system consists of the same components as the conventional ABS above with the following additional components:

The AdvanceTrac® system is made up of the following 2 distinct vehicle systems; traction control and Electronic Stability Control (ESC) .

Traction Control System

The traction control system aids in the prevention of excessive wheel spin which will allow the vehicle to maintain traction during acceleration. This is accomplished in the same manner as anti-lock braking but also includes the use of the PCM for modulating engine torque.

Electronic Stability Control (ESC) System

The ESC system constantly monitors vehicle direction of travel relative to the driver's intended course and aids in keeping the vehicle traveling along that course. The ESC also aids in keeping the vehicle stable during sudden or abrupt maneuvers. This is accomplished in the same manner as anti-lock braking and traction control.

When either of these 2 systems activate, the driver may notice the same operational symptoms as ABS along with the following additional symptoms:

Stability/Traction Control Switch

The traction control switch can be used by the driver to disable and enable the traction control portion of the AdvanceTrac® system. When the switch is pressed, the sliding car icon in the Instrument Panel Cluster (IPC) will illuminate. The conventional ABS and the ESC system cannot be disabled through the use of the traction control switch.

Stability/Traction Control Indicator

The stability/traction control indicator (also known as the sliding-car icon) is located in the instrument cluster. The sliding-car icon is used to alert the driver that the traction control portion of the AdvanceTrac® system has been disabled by the driver. It is also used to alert the driver that a stability/traction event is taking place (flashes twice per second) and to alert the driver of potential concerns in the AdvanceTrac® system (illuminates solidly).

Anti-Lock Brake System (ABS) Module
Special Tool(s) Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool   ...

Hydraulic Control Unit (HCU)
Special Tool(s) Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool Material ...

More about Ford Focus:

Ford Focus Halfshaft Seal - RH  (Automatic Transaxle/Transmission — 4F27E)
Special Tool(s) Handle 205-153 (T80T-4000-W) Installer, Output Shaft Seal 307-572 Material Item Specification Motorcraft® MERCON® LV Automatic Transmission Fluid XT-10-QLVC (US); CXT-10-LV12 (Canada) MERCON ...

© 2016-2019 Copyright www.ffguide.net