- Symptoms - Hydraulic Brakes
Symptoms - Hydraulic BrakesImportant: The following steps must be completed before using the symptom tables.
1. Perform Diagnostic System Check - Hydraulic Brakes before using the hydraulic brake 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.
2. Perform the Brake System Vehicle Road Test before using the hydraulic brake symptom tables in order to duplicate the customer's concern.
Road Test Procedure
3. Review the system operation in order to familiarize yourself with the system functions. Refer to the following:
- Brake Warning System
- Hydraulic Brake System
- Brake Assist System
- Disc Brake System
- Drum Brake System
Visual/Physical Inspection
Inspect for aftermarket devices which may affect the operation of the brake warning system.
Inspect the easily accessible or visible system components for obvious damage or conditions which may cause the symptom.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
- Brake Warning Indicator Always On
Brake Warning Indicator Always On
- Brake Warning Indicator Inoperative (W/ABS) or Brake Warning Indicator Inoperative (W/O ABS)
ABS Indicator Inoperative
Symptom Related Diagnostic Procedures
- Brake Pulsation
Brake Pulsation
- Brake System Noise
Brake System Noise
- Braking Action Uneven - Pulls to One Side
Braking Action Uneven - Pulls to One Side
- Braking Action Uneven - Front to Rear
Braking Action Uneven - Front to Rear
- Brake Pedal Excessive Travel
Brake Pedal Excessive Travel
- Brake Pedal Excessive Effort
Brake Pedal Excessive Effort
- Brakes Drag
Brakes Drag
- Brake System Slow Release
Brake System Slow Release
- Brake Fluid Loss
Brake Fluid Loss