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.
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HOMESERVICE MANUALSFORD2003WINDSTAR BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1964 (FOUR WHEEL DRIVE (4WD) SYSTEMS)
2003 Ford Windstar Base
Section 1964 (Four Wheel Drive (4WD) Systems)
2003 Ford Windstar BaseSECTION Section 1964 (Four Wheel Drive (4WD) Systems)
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnostic Tests
- Four Wheel Drive (4WD) Systems
- Notes
- Principles of Operation
- Inspection and Verification
- DTC Charts
- Symptom Chart
- Pinpoint Tests
- Pinpoint Test A: Four Wheel Drive (4WD) System Functional Test
- Pinpoint Test B: 4X4 Control Module Battery Voltage is High or Low
- Pinpoint Test C: 4X4 Control Module Received No/Invalid Data from PCM
- Pinpoint Test D: 4X4 Control Module Received No/Invalid Data from ABS Module
- Pinpoint Test E: High-Speed Controller Area Network (HS-CAN) Communications Bus Fault
- Pinpoint Test F: Vehicle Has No or Inadequate Torque at Rear Wheels
- Pinpoint Test G: Vehicle Binds in a Turn or Resists Turning
- Pinpoint Test H: Tire/Axle Out of Acceptable Range
- Four Wheel Drive (4WD) Systems
- Removal And Installation
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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.