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 MANUALSFORD1985BRONCO 5.8 G, STANDARD, TODREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1 (ANTI-LOCK)DIAGNOSISTROUBLE CODESCODE 11 (STOPLIGHT SWITCH CIRCUIT)
1985 Ford Bronco 5.8 G, Standard, TOD
Code 11 (Stoplight Switch Circuit)
1985 Ford Bronco 5.8 G, Standard, TODSECTION Code 11 (Stoplight Switch Circuit)
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 1992 Ford Ranger, 1992 Ford RV Cutaway, 1992 Ford Pickup, 1992 Ford Explorer, and 1992 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
- This condition occurs only when driving above 35 MPH. Depress brake pedal and check stoplight operation. If stoplights do not operate, repair stoplight circuit, and retest system. If stoplights operate properly, turn ignition off. Unplug control module connector. Measure voltage at module connector pin No. 11 while depressing brake pedal. See Figure .
- If voltage is less than 9 volts, repair open between stoplight switch and control module. If voltage is 9 volts or more, check 4-way flasher and wiring. A problem with 4-way flasher or wiring could cause feedback through stoplight circuit.
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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.