Chevrolet Sonic Repair Manual: Hydraulic Brake System Description and Operation
- System Component Description
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The hydraulic brake system consists of the following:
- Hydraulic Brake Master Cylinder Reservoir
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Contains a supply of brake fluid for the hydraulic brake system.
- Hydraulic Brake Master Cylinder
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Converts mechanical input force into hydraulic output pressure.
Hydraulic output pressure is distributed from the master cylinder through two hydraulic circuits, supplying diagonally-opposed wheel apply circuits.
- Hydraulic Brake Pressure Balance Control System
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Regulates brake fluid pressure delivered to hydraulic brake wheel circuits, in order to control the distribution of braking force. Pressure balance control on non-ABS equipped vehicles, is achieved through a proportioning valve assembly. Pressure balance control on ABS equipped vehicles, is achieved through electronic brake distribution (EBD), which is a function of the ABS modulator.
- Hydraulic Brake Pipes and Flexible Brake Hoses
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Carries brake fluid to and from hydraulic brake system components.
- Hydraulic Brake Wheel Apply Components
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Converts hydraulic input pressure into mechanical output force.
- System Operation
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Mechanical force is converted into hydraulic pressure by the master cylinder, regulated to meet braking system demands by the pressure balance control system, and delivered to the hydraulic brake wheel circuits by the pipes and flexible hoses. The wheel apply components then convert the hydraulic pressure back into mechanical force which presses brake linings against rotating brake system components.
Hydraulic Brake System Bleeding (Pressure)
Special Tools
CH-29532 Diaphragm Type Brake Pressure Bleeder
CH-35589-A Brake Pressure Bleeder Adapter
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid ...
Hydraulic Brake System Flushing
Warning: Refer to Brake Fluid Irritant Warning.
Caution: Refer to Brake Fluid Effects on Paint and Electrical Components
Caution.
Inspect the brake fluid for the following conditio ...
Other materials:
Battery Positive and Negative Cable Replacement
Removal Procedure
Disconnect the negative battery cable. Refer to Battery Negative Cable
Disconnection and Connection.
Remove the fuse block and battery positive cable cover.
Remove the battery tray. Refer to Battery Tray Replacement.
Remove the battery posit ...
Fuel Pressure Measurement
Special Tools
EN 34730?E1 Pressure Tester
For equivalent regional tools, refer to Special Tools
Warning: Gasoline or gasoline vapors are highly flammable. A fire
could occur if an ignition source is present. Never drain or store gasoline
or diesel fuel in an open con ...
Assisted parking
General information
Applies to: vehicles with park assist
If your vehicle is equipped with park assist, this
system helps you find suitable parking spaces.
Parking spaces are measured using ultrasonic
sensors on the sides of the vehicle.
The system helps you to park while the driver
monitors the v ...
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