1990 Ford Taurus SHOFACTORY OEM SERVICE PROCEDURE

Preliminary Information

Before testing specific components of keyless entry system, ensure door lock actuator motors and trunk release solenoid operate correctly when activated by manual switches. Check for binding linkages and poor wire connections. Lubricate or repair as necessary.

The keyless entry module CANNOT be serviced and must be replaced as an assembly. Perform QUICK TEST, then perform those PINPOINT TESTS specified by QUICK TEST. Run PINPOINT TESTS only when QUICK TEST has failed. After repairs, perform QUICK TEST to ensure system works properly.

Fig 1: Keyless Entry System Wiring Diagram
G53158Courtesy of FORD MOTOR CO.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.