1986 Mercury Lynx Base, MTXIIFACTORY OEM SERVICE PROCEDURE

High Speed

  1. With the wiper switch in "HIGH" position, the current flows from the ignition switch through the wiper switch to the wiper motor high terminal. To check high speed operation, turn ignition switch on and place wiper switch in "HIGH" position.
  2. Check for voltage at the circuit 56 terminal at 3-way motor connector. If no voltage is present, check voltage at circuit 63 at the wiper switch. If voltage is present at circuit 63 but not present at circuit 56, replace the wiper switch.
  3. If voltage is not present at circuit 63, trace circuit back to source to determine problem. If voltage is present at circuit 56 and motor does not run, ground the motor ground terminal to the body. If motor runs, service ground wiring. If motor does not run, replace motor.
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:

  • • 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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