Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 30 (WIPER/WASHER SYSTEM (CONVERTIBLE))TESTING2-SPEED FUNCTION TESTSWIPER MOTOR WILL NOT OPERATE IN ANY POSITION
1984 Plymouth Horizon Base, 1.6 A
Wiper Motor Will Not Operate In Any Position
1984 Plymouth Horizon Base, 1.6 ASECTION Wiper Motor Will Not Operate In Any Position
WARNING: This page is about a different car, the 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
- Check 20-amp fuse No. 28. If fuse is okay, go to next step. If fuse is blown, replace fuse and check wiper motor in all switch positions. If fuse does not blow and wiper motor does not operate, go to next step. If fuse blows, disconnect motor wiring connector and replace fuse. If fuse does not blow, motor is defective. If fuse blows again, switch and/or wiring is at fault.
- Turn wiper switch to LOW speed position. If motor can be heard running, check output shaft for rotation. If output shaft is not turning, replace motor. If output shaft is turning, check wiper drive linkage for wear and damage. If motor cannot be heard running, go to next step.
- Ensure wiper switch is in LOW position. Connect voltmeter between motor terminal No. 3 and ground strap. See Fig 1 . If less than one volt exists, move negative voltmeter lead to negative battery cable. If voltage increases, ground circuit is bad. Ensure motor mounting is free of paint. Ensure nuts and bolts are tight. If voltage is still not indicated, check for open circuit in wiring harness or wiper switch. Motor assembly is faulty if voltage increase is minimal (3 volts).
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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.