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

Go to Diagnostic Starting Point - Vehicle

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

•	Improper operation of calliper pistons

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

•	Brake fluid leak

•	Improperly functioning proportion valve, if equipped

•	Improper operation of dynamic rear proportion (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 6

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 6

Go to Step 4

4

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. Refer to Diagnostic Starting Point - Vehicle .

Did you find and correct a condition?

Go to Step 6

Go to Step 5

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 6

Go to Diagnostic Starting Point - Vehicle

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