Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD1991THUNDERBIRD LX, 5.0 TREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM
1991 Ford Thunderbird LX, 5.0 T
Anti-Lock Brake System
1991 Ford Thunderbird LX, 5.0 TSECTION Anti-Lock Brake System
- Description
- Operation
- Depressurizing Brake System
- Bleeding Brake System
- Trouble Shooting
- Diagnosis
- Diagnostic Tests Using Warning Light Symptom Chart
- Notes
- Circuit Test A - Anti-Lock Light On With Brake Light Off
- Circuit Test B - Anti-Lock Light On After Eng Starts, Brake Light Off
- Circuit Test C - Anti-Lock Light On While Driving Or Cycling Of Anti-Lock System
- Circuit Test D - Anti-Lock & Brake Light On Or Pump Motor Runs Over 60 Seconds
- Circuit Test E - Anti-Lock Light Intermittently On
- Circuit Test F - Brake Light On, Anti-Lock Light Off; Parking Brake & Brake Lining Checked
- Circuit Test G - Anti-Lock Light Not On When Ignition Is Turned On
- Circuit Test H - Spongy Brake Pedal, No Warning Light With/Without Anti-Lock Function
- Circuit Test J - Poor Vehicle Tracking During Anti-Lock Function, Light Off
- On-Board Self-Test
- Removal & Installation
- Adjustments
- Torque Specifications
- Wiring Diagrams
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.