PRE-RELEASE
Symptoms - Hydraulic Brakes
| Symptoms - Hydraulic Brakes |
| Note | ||
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The following steps must be completed before using the symptom tables. |
| 1. |
Perform
Diagnostic System Check - Vehicle
before using the brake indicator symptom tables in order to verify that all of the following are true:
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| • |
There are no DTCs set.
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| • |
The control module(s) can communicate via the serial data link.
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| 2. |
Perform the
Brake System Vehicle Road Test
before using the hydraulic brake symptom tables in order to duplicate the customer's concern.
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| 3. |
Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
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Hydraulic Brake System Description and Operation
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Brake Assist System Description and Operation
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Disc Brake System Description and Operation
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| Visual/Physical Inspection |
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Inspect for aftermarket devices which could affect the operation of the brake warning system. Refer to
Checking Aftermarket Accessories
.
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| • |
Inspect for easily accessible or visible system components for obvious damage or conditions which may cause the symptom.
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| 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:
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Brake Pulsation
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Brake System Noise
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Braking Action Uneven - Pulls to One Side
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Braking Action Uneven - Front to Rear
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Brake Pedal Excessive Travel
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Brake Pedal Excessive Effort
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Brakes Drag
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Brake System Slow Release
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Brake Fluid Loss
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