Table of Contents
What causes windshield wipers to not turn on?
When a windshield wiper is not working, it could mean that the electrical motor inside the wiper shorted out or malfunctioned. This means that your wipers won’t work at all. You can try replacing any worn parts, but the easiest thing might be just to replace your wipers.
What causes intermittent wipers to stop working?
This is usually caused by the wiper motor not getting the power that it needs due to a bad relay. In most cases, a professional mechanic will replace the intermittent wiper relay and the controls at the same time to ensure all of the supporting connections work smoothly together.
How do I know if my windshield wiper switch is bad?
Common signs include windshield wipers not turning on or off, not changing speed or settings, and the turn signals not working.
What relay controls wipers?
The intermittent wiper relay gives you this feature. The relay functions as a switch and energizes circuits as needed. In the case of your windshield wipers, it controls low, high, and intermittent speeds by energizing a particular circuit at a given moment depending on what speed you have your wiper switch set to.
How do you reset a windshield wiper motor?
Use a socket wrench to remove the nut located at the center of the wiper motor. This nut connects the arm linkage to the motor. Turn the wipers on, then back off, so the motor completes a full cycle and returns to the correct park position. The blades will not move since the linkage has been disconnected.
How do you test a rear wiper motor?
Unplug the wiper motor connector. Probe the voltage supply plug with a voltmeter and make sure voltage and ground are present. Move the wiper function switch through all positions to determine proper voltage at the plug. If there is no voltage, check the voltage supply to the dash switch and check the rear wiper fuse.
Where is the wiper control module?
Some mechanics refer to the wiper module as the wiper governor module. It is located underneath the dashboard, above the brake and accelerator pedal, and is responsible for the complete operation of the windshield wiper system.
How do you test a wiper control module?
Use the fuse pattern shown on the cover and locate the wiper motor fuse. Test the fuse using your twelve volt test light. Clip the ground lead to a solid ground source and touch the positive lead to each side of the fuse. If the test light lights up on both terminals, the fuse is good.
Do wiper motors need a relay?
Many wiper motors don’t need much current to run. Their wiper controls connect directly to the wiper motor without a relay.
How do I know if my rear wiper motor is bad?
Symptoms of a Bad or Failing Windshield Wiper Motor
- Wiper blades move slower than programmed.
- Wiper blades only have one speed.
- Wiper blades don’t move.
- Wiper blades don’t park in the correct position.