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Brake Pedal Excessive Effort

Brake Pedal Excessive Effort


Step Action Yes No
DEFINITION: Brake pedal requires an increased amount of input from the driver to obtain good braking action and/or stopping distance is increased.

1

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Go to Symptoms - Hydraulic Brakes

2


1. Inspect the brake assist system for the following conditions.

Vacuum leaks, if equipped with vacuum power assist

Lack of lubrication, binding or excessively worn pushrod or pedal pivots or pivot bushings

Bent or damaged pedal pushrod, pedal, or pedal bracket

Damaged or improperly operating brake booster assembly

2. Adjust, repair or replace components as necessary.


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3


1. Inspect the hydraulic brake system for the following conditions.

Binding caliper pistons

Internally damaged flexible brake hoses; hindering fluid flow

Kinked or damaged flexible brake hoses and/or pipes

Internal brake fluid leaks; improperly functioning master cylinder

Poor brake fluid quality; low boiling point

2. Adjust, repair or replace components as necessary. Refer to Hydraulic Brake System Diagnosis .


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4


1. Inspect the disc brake system for the following conditions.

Excessively worn linings

Glazed linings

Cracked, distorted or damaged linings

Contaminated linings

Binding, damaged or excessively worn caliper hardware and/or lining hardware

Lack of lubrication or excessive corrosion on metal to metal contact surfaces

Excessively worn or corroded rotor friction surfaces

Glazed rotor friction surfaces

Hard spots, heat checks, blueing discoloration of rotor friction surfaces

2. Adjust, repair or replace components as necessary. Refer to Disc Brake System Diagnosis .


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Go to Symptoms - Hydraulic Brakes

5


1. Install or connect any components that were removed or disconnected during diagnosis.

2. Road test the vehicle in order to confirm proper operation. Refer to Brake System Vehicle Road Test .


Is the condition still present?

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System OK