If you have a cable operated regulator, replace the entire regulator. If you see movement, the regulator is usually at fault. If the motor is good, you should see some movement or hear some noise coming from the motor. Reconnect the electrical connector to the motor and try operating the window. It’s either a bad motor or a broken regulator that’s causing the motor to stall. If you’re seeing the toggling voltage, the problem is in the window regulator. Toggle the window switch and check meter to see if it switches from +12volts to -12volts Power window voltage toggles but window doesn’t move The problem lies in the window regulator. If the meter reading toggles between +12 volts and -12volts, the switch is good. Then turn the ignition key to the RUN position. Connect the red and black probes to the two wires on the wiring harness connector you just removed. Test a power window motorĭisconnect the electrical connector from the regulator motor. If you understand the point I’ve made above if the window goes down, that confirms that wiring to the window motor is good and, in most cases it confirms the motor is good (although rare, sometimes a motor can work in one direction and not the other). Power Window goes down but not upĪside from not working at all, a power window that goes down but not up is the second most common complaint. So if the motor works in one direction just fine, but not in the other direction it’s almost NEVER the motor-it’s the switch. When you operate the up cycle, the switch reverses the polarity on those same two wires. When you operate the down cycle on your power window switch, it provides + power and – ground to the power window motor. Second: Power window motors only have two wires. When passenger windows don’t work, but the driver’s window does, chances are high that you’ve got a bad master switch in the driver’s door or a broken wire in the driver’s door hinge area. This can save time and money when it comes to diagnosing and repairing problems with power windows.First: All the wiring for driver’s and passenger’s windows runs through the master switch. Knowing the wiring diagram will help you to quickly identify any issues and to determine which components need to be replaced. Before attempting any repairs, it’s important to refer to the power window wiring diagram for your Chevy. It does not provide information about the individual wires. The schematic is a simplified version of the wiring diagram that only shows the major components and how they connect to each other. It’s important to note that the wiring diagram is not the same as the schematic. This makes it easier to trace out any electrical problems that may be present. Each line on the diagram is labeled with the component name and the color of the line indicates the type of wire. It shows how these components are connected together and how they interact. The wiring diagram is essentially a map of all of the wires and connections in your car’s power window system. Knowing the wiring diagrams makes it possible to quickly diagnose problems with power windows and to ensure that they are working properly. It can take some digging to locate the diagram, but once you do, it should be easy to understand. Power window wiring diagrams for Chevy cars are typically found on the manufacturer's website. It’s important to understand the wiring diagram for your Chevy power windows in order to identify any potential problems or maintenance needs. But with power windows come wiring diagrams. Power windows make it easy to open and close windows without having to manually crank them up and down. If you have a newer model Chevy, the chances are good that it comes with power windows.
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