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 MANUALSFORD1992CROWN VICTORIA TOURING, AOD-EREPAIR AND DIAGNOSIS (SINGLE PAGE)STEERINGPOWER STEERINGSTEERING SYSTEM - VARIABLE ASSISTTESTINGVARIABLE ASSIST SYSTEM TESTING
1992 Ford Crown Victoria Touring, AOD-E
Variable Assist System Testing
1992 Ford Crown Victoria Touring, AOD-ESECTION Variable Assist System Testing
NOTE:
Crown Victoria, Grand Marquis & Town Car feature computer assisted diagnostics using STAR Tester (Rotunda 007-00017), or SUPER STAR II Tester (Rotunda 007-00028) hand-held units. Refer to VARIABLE ASSIST TROUBLE CODES TABLE
for code explanation.
- To enter diagnostics, perform following procedure. With ignition off, connect STAR Tester to diagnostic connector. See Figure and Figure . Turn ignition on and wait a minimum of 5 seconds. Depress test button on STAR Tester. Code 10 followed by Code 12 or 13 should be displayed. While still holding button down, open and close all four doors and turn steering wheel.
- Release STAR Tester button, wait at least 5 seconds, and depress button. Star Tester will display Code 11 if system is okay, or trouble code(s) if problem is found. Turn ignition off to exit testing.
VARIABLE ASSIST TROUBLE CODES
| Code | Description |
|---|---|
| 10 | Diagnostics Entered, Auto Test In Progress |
| 11 | Vehicle Passes |
| 12 | Auto Test Passed |
| 13 | Auto Test Failure |
| 15 | No Drive Cycle Errors Detected |
| 16 | EVO Short Circuit |
| 17 | EVO Open Circuit |
| 18 | Bad Valve |
| 55 | Speed Greater Than 15 MPH Not Detected (Drive Only) |
| 74 | Steering Wheel Rotation Not Detected |
| 80 | Insufficient Battery Voltage To Run Diagnostics |
RENDER: 1.0x
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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.