2003 Ford Windstar BaseFACTORY OEM SERVICE PROCEDURE

Symptom Chart

Refer to SYSTEM WIRING DIAGRAMS for the connector numbers cited in the pinpoint tests.

SYMPTOMS

Condition Possible Sources Action
  • No communication with the front electronics module (FEM) - unable to carry out the front electronics module (FEM) self-test
  • Battery junction box (BJB) fuse 2 (10A).
  • Front electronics module (FEM).
  • Circuitry.
  • No communication with the rear electronics module (REM) - unable to carry out the rear electronics module (REM) self-test
  • Central junction box (CJB) fuse 16 (10A).
  • Rear electronics module (REM).
  • Circuitry.
  • No communication with the electronic instrument cluster - unable to carry out the electronic instrument cluster self-test
  • CJB fuse 16 (10A).
  • Electronic instrument cluster.
  • Circuitry.
  • All power windows are inoperative
  • BJB fuse 106 (30A).
  • Delayed accessory relay.
  • Front electronics module (FEM).
  • Circuitry.
  • A single power window is inoperative - driver front
  • BJB fuse 113 (30A).
  • Window regulator electric drive.
  • Master window regulator control switch.
  • FEM.
  • Circuitry.
  • A single power window is inoperative - passenger front
  • Window regulator electric drive.
  • Master window regulator control switch.
  • Passenger window regulator control switch.
  • Circuitry.
  • Vent power windows are inoperative
  • CJB fuse 18 (15A).
  • Master window regulator control switch.
  • Rear quarter flip window motor.
  • Circuitry.
  • The one-touch down feature is inoperative
  • FEM.
  • Master window regulator control switch.
  • Circuitry.
  • The rear window will not defrost
  • BJB 116 (30A).
  • CJB fuse 10 (15A).
  • Heated rear window switch.
  • Heated rear window relay.
  • Heated rear window glass.
  • Instrument cluster.
  • Front electronics module (FEM).
  • Circuitry.
  • The rear window defroster will not shut off automatically
  • Heated rear window switch.
  • Heated rear window relay.
  • Instrument cluster.
  • FEM.
  • Circuitry.
  • The delayed accessory does not turn off
  • FEM.
  • Delayed accessory relay.
  • Circuitry.
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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