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HOMESERVICE MANUALSFORD1997EXPLORER 4D UTILITY, 4.0 E, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 54 (WIPER/WASHER SYSTEMS)SYSTEM TESTINGPINPOINT TEST B - FRONT WIPERS INOPERATIVE
1997 Ford Explorer 4D Utility, 4.0 E, 4WD

Pinpoint Test B - Front Wipers Inoperative

1997 Ford Explorer 4D Utility, 4.0 E, 4WDSECTION Pinpoint Test B - Front Wipers Inoperative
WARNING: This page is about a different car, the 1997 Mercury Villager. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect FRONT WIPER fuse in instrument panel fuse block. If fuse is okay, go to next step. If fuse is blown, replace fuse. Turn ignition on. Recheck fuse. If fuse is okay, go to step 4). If fuse is blown again, go to next step.
  2. Turn ignition off. Remove FRONT WIPER fuse. Disconnect Front Wiper/Washer Amplifier (FWWA) 6-pin connector. FWWA is located on left front strut tower. Disconnect wiper motor connector and washer pump connector. Measure resistance of Black/White wire between ground and output side of FRONT WIPER fuse holder. If resistance is more than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair short to ground in Black/White wire.
  3. Measure resistance of Red wire between ground and FWWA 6-pin connector. If resistance is more than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair short to ground in Red wire.
  4. Test accessory relay. See ACCESSORY RELAY  under COMPONENT TESTS. Replace relay as necessary. If relay is okay, go to next step.
  5. Test front wiper/washer switch. See WIPER/WASHER SWITCH under COMPONENT TESTS  . Replace multifunction switch as necessary. If switch is okay, go to next step.
  6. Test front wiper motor. See WIPER MOTOR  under COMPONENT TESTS. Replace wiper motor as necessary. If wiper motor is okay, go to next step.
  7. Ensure wiper motor and FWWA connectors are disconnected. Turn ignition on. Measure voltage between ground and Black/White wire at wiper motor wiring harness connector and FWWA wiring harness connector. If battery voltage exists at both connectors, go to next step. If battery voltage does not exist at one or both connectors, repair open in Black/White wire from instrument panel fuse block.
  8. Disconnect FWWA 4-pin connector. Measure resistance of Black wire between ground and FWWA 4-pin connector, FWWA 6-pin connector and wiper motor wiring harness connector. If all resistances are less than 5 ohms, go to next step. If any resistance is 5 ohms or more, repair open in suspect Black wire.
  9. Disconnect multifunction switch 10-pin connector. Measure resistance of Green wire, White wire and Pink/Blue wire between ground and multifunction switch wiring harness connector. If any resistance is less than 10,000 ohms, repair short to ground in suspect wire. If all resistances are 10,000 ohms or more, go to next step.
  10. Measure resistance of Green wire, White wire and Pink/Blue wire between FWWA 4-pin wiring harness connector and multifunction switch wiring harness connector. If any resistance is 5 ohms or more, repair open in suspect wire. If all resistances are less than 5 ohms, replace FWWA.
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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.