Injector Circuit

1995 Mercury Villager GS, Van PassengerSECTION Injector Circuit
  1. Turn ignition off. Disconnect suspect fuel injector wiring harness connectors. Turn ignition on. Measure voltage between connector terminals. If voltage is 11-14 volts, go to next step. If voltage is not 11-14 volts, check fuse. If fuse is okay, repair Yellow wire in fuel injector circuit.
  2. Leave fuel injector connector disconnected. Using an ohmmeter, measure resistance between fuel injector terminals. If resistance is not 10-14 ohms, replace fuel injector. If resistance is 10-14 ohms, fuel injector is okay and testing is complete.
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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.