Symptoms - Park Brake

Note
Review the system operation in order to familiarize yourself with the system functions.

Mechanical Park Brake System

Visual/Physical Inspection

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Inspect for aftermarket devices which could affect the operation of the park brake system.

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

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

Park Brake Will Not Hold or Release

Electronic Park Brake System (EPB)

Note
The following steps must be completed before using the symptom tables. Perform the Diagnostic System Check - Vehicle before using the symptom tables in order to verify that all of the following are true:
•	There are no DTCs set.
•	The control modules can communicate via the serial data link.

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Inspect for aftermarket devices which could affect the operation of the EPB. Refer to Checking Aftermarket Accessories .

•

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

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

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

Park Brake Will Not Hold or Release