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Front Wiper Motor Test

  1. Turn ignition off. Unplug wiper motor connector. Using fused jumper wire, apply 12 volts to terminal No. 2 of wiper motor. See Fig 1 . Motor should run at low speed.
  2. Disconnect jumper wire, then apply 12 volts to terminal No. 1 of wiper motor. Motor should run at high speed.
  3. Measure resistance between motor terminals No. 3 and 4. With motor in park position, resistance should be less than 5 ohms. With motor in any but park position, resistance should be more than 10,000 ohms. Replace motor if it does not perform as specified.
Fig 1: Identifying Wiper Motor Terminals
G94H46596Courtesy of FORD MOTOR CO.
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