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Symptoms - Hydraulic Brakes

Symptoms - Hydraulic Brakes


Note

The following steps must be completed before using the symptom tables.



1. Perform the Brake System Vehicle Road Test before using the hydraulic brake symptom tables in order to duplicate the customer's concern.

2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:

• Brake Warning System Description and Operation

• Hydraulic Brake System Description and Operation

• Brake Booster Vacuum Assist Description and Operation

• Brake Assist System Description and Operation

• ABS Description and Operation

• Park Brake System Description and Operation


Visual/Physical Inspection


• Inspect for aftermarket devices which could affect the operation of the hydraulic brake system. Refer to Checking Aftermarket Accessories .

• Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.


Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:


• Brake Warning Indicator Malfunction

• Brake Pulsation

• Brake System Noise

• Braking Action Uneven - Pulls to One Side

• Braking Action Uneven - Front to Rear

• Brake Pedal Excessive Travel

• Brake Pedal Excessive Effort

• Brakes Drag

• Brake System Slow Release

• Brake Fluid Loss

• Brake Booster Pump Motor Malfunction