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.
1996 Ford Crown Victoria V8-4.6L VIN WFACTORY OEM SERVICE PROCEDURE
Initial Inspection and Diagnostic Overview
Inspection and Verification
1. Verify the customer's concern by operating the power windows/heated back window to duplicate the condition.
2. Inspect to determine if one of the mechanical or electrical concerns from the Visual Inspection Chart apply.
3. If the inspection reveals obvious concerns that can be readily serviced, correct the concern before continuing with Inspection and Verification.
4. If the concern remains after the inspection, use the Rotunda New Generation Star (NGS) Tester, 007-00500 or equivalent, connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute Self Test Diagnostics for the driver door module. If after performing Data Link Diagnostic Test, the New Generation Star (NGS) Tester responds with module NO RESPONSE/NOT EQUIPPED, go to Pinpoint Test A. A: No Communication With Driver Door Module
5. If self test is passed and no diagnostic trouble codes (DTCs) are retrieved, GO to Symptom Chart to continue diagnosis. Symptom Related Diagnostic Procedures
6. If diagnostic trouble code (DTCs) are retrieved, GO to Driver Door Module (DDM) Diagnostic Trouble Codes (DTCs) Index. Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index
7. If the driver door module cannot be accessed by the New Generation Star (NGS) Tester, go to Pinpoint Test A. A: No Communication With Driver Door Module
1. Verify the customer's concern by operating the power windows/heated back window to duplicate the condition.
Visual Inspection Chart:
2. Inspect to determine if one of the mechanical or electrical concerns from the Visual Inspection Chart apply.
3. If the inspection reveals obvious concerns that can be readily serviced, correct the concern before continuing with Inspection and Verification.
4. If the concern remains after the inspection, use the Rotunda New Generation Star (NGS) Tester, 007-00500 or equivalent, connected to the data link connector (DLC) to retrieve continuous diagnostic trouble codes (DTCs) and to execute Self Test Diagnostics for the driver door module. If after performing Data Link Diagnostic Test, the New Generation Star (NGS) Tester responds with module NO RESPONSE/NOT EQUIPPED, go to Pinpoint Test A. A: No Communication With Driver Door Module
5. If self test is passed and no diagnostic trouble codes (DTCs) are retrieved, GO to Symptom Chart to continue diagnosis. Symptom Related Diagnostic Procedures
6. If diagnostic trouble code (DTCs) are retrieved, GO to Driver Door Module (DDM) Diagnostic Trouble Codes (DTCs) Index. Driver Door Module (DDM) Diagnostic Trouble Code (DTC) Index
7. If the driver door module cannot be accessed by the New Generation Star (NGS) Tester, go to Pinpoint Test A. A: No Communication With Driver Door Module
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.
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