5-Step Wiper Pulse Module Installation
Your vehicle's wipers are controlled by a unit called the wiper pulse module. This module usually needs to be replaced once its logic chip gets fried by a problematic wiper switch. This module lasts a long time if the electrical wires of the components it controls are properly connected. In case you need to replace your damaged wiper pulse module, make sure you do it correctly by following this guide. Prepare the tools and gear up for a 30-minute DIY task.
Required skill level: Novice
Needed tools and materials
Positioning the wipers
If the wipers are not in parked position, run the engine and operate the wipers until they are horizontally set at the bottom of the windshield.
Cutting the electrical connections
Before working on any electrically run component on your vehicle, make sure that the electrical connection is cut. Lift the hood and disconnect the negative battery cable with a socket wrench. For added security, work with gloves on to prevent electrical shock.
Locating the wiper motor and the module
Locate the wiper motor under the dashboard, then disconnect its wiring connector. Next, disconnect the wiper washer pump from its hoses. Using the Phillips screwdriver, remove the screws that attach the driver-rod to the wiper arm, then separate the driver-rod from the wiper arm. Once this is done, go back under the dashboard and locate the module next to the motor.
Removing the old module
Remove the screws that secure the wiper pulse module to the assembly. There may be two or more screws that you need to unfasten. Set the screws aside.
Installing the new module
Switch the new control module with the removed one, then secure it in place by fastening the screws. Reconnect the driver-rod to the wiper arm, the hoses to the washer pump, and the wiring connector to the motor. Reattach the negative battery cable, then try if the wipers work fine with the newly installed pulse module.
Tips and warnings
- Make sure that the control unit you are going to install is the right one for your vehicle's make and model.
- In some models, the wiper pulse module is located at a far-flung area under the dashboard. Make sure that you do some body stretching first before getting down on the floor to install the new control unit.