Were you sent here from the Hydraulic Brake Symptom table?

Go to Step 2

Go to Diagnostic Starting Point - Hydraulic Brakes

Is the vehicle equipped with an adjustable stop lamp switch and/or an adjustable cruise control release switch?

Go to Step 3

Go to Step 4

1. Inspect the stop lamp switch for proper adjustment to ensure that the brake pedal is fully releasing.
2. Inspect the cruise control release switch, if equipped, for proper adjustment to ensure that the brake pedal is fully releasing.

Did you find and correct a condition?

Go to Step 14

Go to Step 4

Is the vehicle equipped with Rotor Internaldrum Parking Brake System?

Go to Step 5

Go to Step 7

Make sure the parking brake shoes are not adjusted too tightly, otherwise the dragging may occur in some conditions.

Are the parking brake shoes adjusted too tightly?

Go to Step 6

Go to Step 7

1. Clean and inspect the parking brake shoes for excessive wear and/or damage.
2. Inspect the rotor drum for excessive wear, fading, hotspot and excessive pass of radial.
3. If any of these conditions are present, replace the affected components.
4. Adjust the parking brake system.

Did you find and correct a condition?

Go to Step 14

Go to Step 7

Inspect the parking brake system for proper operation. Refer to Park Brake System Diagnosis.

Did you find and correct a condition?

Go to Step 14

Go to Step 8

Inspect the disc brake system for proper operation. Refer to Disc Brake System Diagnosis.

Did you find and correct a condition?

Go to Step 14

Go to Step 9

1. Separate the brake booster pushrod from the brake pedal.
2. Inspect the brake corners to determine if the brake drag condition is still present.

Do the brake corners still exhibit the brake drag condition?

Go to Step 11

Go to Step 10

Replace the brake pedal assembly.

Did you complete the replacement?

Go to Step 14

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1. Separate the master cylinder from the brake booster. Do not disconnect any brake pipes.
2. Inspect the brake corners to determine if the brake drag condition is still present.

Do the brake corners still exhibit the brake drag condition?

Go to Step 13

Go to Step 12

Replace the brake booster assembly.

Did you complete the replacement?

Go to Step 14

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Inspect the hydraulic brake system for proper operation. Refer to Hydraulic Brake System Diagnosis.

Did you find and correct a condition?

Go to Step 14

Go to Diagnostic Starting Point - Hydraulic Brakes

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