Brake System
Symptom Chart(s)
Symptom Chart: Brake System
Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).
Condition | Possible Sources | Actions |
|---|---|---|
The red brake warning indicator and the yellow ABS warning indicator are illuminated | Diagnostic Trouble Codes (DTCs) in the ABS | CHECK for ABS diagnostic trouble codes (DTCs). REFER to: Anti-Lock Brake System (ABS) and Stability Control (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing). |
The red brake warning indicator is always/never on | Brake fluid level switch Parking brake switch Wiring, terminals or connectors IPC BCM | REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing). |
Vehicle pulls or drifts during braking | Brake calipers and/or guide pins Brake flexible hose Brake pads Brake discs | INSPECT the brake system components. INSTALL new components as necessary. |
Tires | REFER to: Wheels and Tires (204-04A Wheels and Tires, Diagnosis and Testing). | |
Suspension component(s) and/or wheel alignment | REFER to: Suspension System (204-00 Suspension System - General Information, Diagnosis and Testing). | |
Brake pedal goes down fast or eases down slowly | Brake fluid leaks and/or air in the system | INSPECT the system for leaks. REPAIR as necessary. BLEED the system. REFER to: Brake System Pressure Bleeding (206-00 Brake System - General Information, General Procedures). |
Brake master cylinder | CARRY OUT the Brake Master Cylinder - Bypass Condition Component Test. | |
HCU | REFER to: Anti-Lock Brake System (ABS) and Stability Control (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing). | |
Brake pedal | INSPECT the brake pedal simulator spring, cam and interface-to-booster. INSTALL a new brake pedal and bracket as necessary. |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.