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.
2002 Ford Focus SVTFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake Control System - Stability Assist
- Specifications
- Description And Operation
- Diagnosis And Testing
- Notes
- General Equipment
- Principles of Operation
- Inspection and Verification
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: No Communication With The Stability Assist Module
- Pinpoint Test B: Brake Pedal Position Input Circuit Failure
- Pinpoint Test C: DTC B1676 - Battery Voltage Out Of Range
- Pinpoint Test D: DTC C1937 - Steering Wheel Angle Sensor Offset Failure
- Pinpoint Test E: DTC C1095 - Abs Hydraulic Pump Motor Circuit Failure
- Pinpoint Test F: DTC C1145 (RF), DTC C1155 (LF), DTC C1165 (RR), DTC C1175 (LR) - Anti-Lock Brake Sensor Input Circuit Failure
- Pinpoint Test G: DTC C1233 (LF), DTC C1234 (RF), DTC C1235 (RR), DTC C1236 (LR) - Anti-Lock Brake Sensor Input Signal Missing
- Pinpoint Test H: DTC C1267 - Abs Functions Temporarily Disabled
- Pinpoint Test I: DTC C1279 - Yaw Rate Sensor Circuit Failure, DTC C1280 - Yaw Rate Sensor Signal Fault
- Pinpoint Test J: DTC C1281 - Accelerometer Circuit Failure, DTC C1282 - Accelerometer Signal Fault
- Pinpoint Test K: DTC C1285-Brake Booster Solenoid Output Failure
- Pinpoint Test L: DTC C1286-Booster Mechanical Failure
- Pinpoint Test M: DTC C1287 - Booster Pedal Force Switch Circuit Failure
- Pinpoint Test N: DTC C1288-Primary Brake Pressure Sensor Input Circuit Failure
- Pinpoint Test O: DTC C1289-Secondary Brake Pressure Sensor Input Circuit Failure
- Pinpoint Test P: DTC C1730 - Reference Voltage Out Of Range (+5 V)
- Pinpoint Test Q: The Yellow Abs Warning Indicator Does Not Self-Check
- Pinpoint Test R: The Traction Control Is Inoperative
- Pinpoint Test S: The Stability Assist/Traction Control Switch Indicator Is Never/Always On
- Pinpoint Test T: The Stability Assist System Cannot Be Disabled
- Pinpoint Test U: The Stability Assist Indicator Does Not Self-Check
- Pinpoint Test V: DTC U1053 - SCP (J1850) Invalid Or Missing Data For Steering / Steering Wheel
- Removal And Installation
Factory Service Tools
Use the Manual With the Right Hardware
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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.