DEFINITION: Braking action or stopping force sensitive or grabbing and/or more pronounced at the front or at the rear axle. Sensitive or grabbing brakes: Excessive brake jump-in force relative to brake pedal input.

Were you sent here from the Hydraulic Brake Symptom table?

Go to Step 2

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

•	Improper operation of wheel cylinder pistons, if equipped

•	Improper operation of calliper pistons

•	Kinked, pinched or damaged brake pipe or flexible brake hose

•	Brake fluid leak

•	Improperly functioning proportioning valve, if equipped

•	Improper operation of dynamic rear proportioning (DRP) system, if equipped

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

Did you find and correct a condition?

Go to Step 7

Go to Step 3

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

•	Contaminated linings

•	Glazed linings

•	Distorted, cracked or damaged linings

•	Excessively worn linings

•	Aftermarket linings

•	Damaged or excessively worn calliper hardware and/or lining hardware

•	Hard spots, heat checks, blueing discolouration of rotor friction surfaces

•	Glazed rotor friction surfaces

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

Did you find and correct a condition?

Go to Step 7

Go to Step 4

1. Inspect the drum brake system, if equipped, for the following conditions.

•	Contaminated linings

•	Improper adjustment

•	Excessively worn or damaged linings

•	Weak or damaged return spring or springs

•	Excessively worn or damaged drums

•	Hard spots, heat checks, blueing discolouration of drum friction surface

•	Distorted or damaged backing plate

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

Did you find and correct a condition?

Go to Step 7

Go to Step 5

5

1. Inspect the suspension system for the following conditions.

•	Loose suspension component connections

•	Excessively worn or damaged suspension components

2. Adjust, repair or replace components as necessary.

Did you find and correct a condition?

Go to Step 7

Go to Step 6

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

•	Binding, bent or damaged pedal pushrod, pedal, or pedal bracket

•	Damaged or improperly operating vacuum booster, if equipped

•	Damaged or improperly operating hydraulic booster, if equipped

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

Did you find and correct a condition?

Go to Step 7

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1. Install or connect 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?

Go to Step 2

System OK