willie59
Administrator
Well, it's nice and toasty outside, summer is rocking along. The wife has an '04 Explorer that has a problem with RF power window. Baffles me, but she's one of those types that prefers riding with the windows down as opposed to using A/C, says it give her a headache. So, there's the problem, RF window won't go down = momma ain't happy. Enter> Me. :tong
Pull door panel off, actually a nice design by Ford, really easy to pull that panel. Using a test light, I discover two things rather quickly, 1) it's a fairly simple circuit, and 2) there's some form of window control module hidden somewhere on this vehicle, prolly in some god awful position under dash, that is causing the problem with window no go down.
Here's what happens; window motor only has two wires going to it, red/wht (up) and wht/red (dwn). The change of direction, up/dwn, happens by the control module (somewhere on vehicle) switching the ground of these two wires. At the switch, the brn/blu ground wire for up works proper, wht/yel for down is faulty.
Ok, so I know what the problem is, question is, 1) where is the control module, and 2) I can only imagine how much it costs. I'm quite certain the cost would result in a grrrrrrr by my tightwad self, not to mention I want to get this thing working now, the momma not happy factor ya know. :yup
So, I have a theory, have to test it out. Now that I have clipped the two ground wires going to control module, strip back the ground wires. Connect the wht/yel (dwn ground) from switch to brn/blu (up ground) harness wire going to control module. Vuala...window goes down. Connect brn/blu from switch back to brn/blu going to module, window goes up. Sweet!
So my theory worked. Question is, how does one make this circuit work by sending two grounding wires to one ground and not get feedback to opposite circuit? Simple, rectifier diodes, at a wallet busting (not) price of about .75 cents apiece from my local Radio Shack.
Before I actually terminal crimp the diodes into the circuit, gotta make certain they are going to do the job. Connect diodes to brn/blu module ground wire, then connect the diodes to the ground wires from switch, window now goes up and down. Excellent! Who's ur daddy now! Go willie, go willie! :drinkup
Now that I know it works, connect the diodes to wires with butt terminals and rap it up, fit the door panel.
Peace and harmony with momma has be restored.
Pull door panel off, actually a nice design by Ford, really easy to pull that panel. Using a test light, I discover two things rather quickly, 1) it's a fairly simple circuit, and 2) there's some form of window control module hidden somewhere on this vehicle, prolly in some god awful position under dash, that is causing the problem with window no go down.
Here's what happens; window motor only has two wires going to it, red/wht (up) and wht/red (dwn). The change of direction, up/dwn, happens by the control module (somewhere on vehicle) switching the ground of these two wires. At the switch, the brn/blu ground wire for up works proper, wht/yel for down is faulty.
Ok, so I know what the problem is, question is, 1) where is the control module, and 2) I can only imagine how much it costs. I'm quite certain the cost would result in a grrrrrrr by my tightwad self, not to mention I want to get this thing working now, the momma not happy factor ya know. :yup
So, I have a theory, have to test it out. Now that I have clipped the two ground wires going to control module, strip back the ground wires. Connect the wht/yel (dwn ground) from switch to brn/blu (up ground) harness wire going to control module. Vuala...window goes down. Connect brn/blu from switch back to brn/blu going to module, window goes up. Sweet!
So my theory worked. Question is, how does one make this circuit work by sending two grounding wires to one ground and not get feedback to opposite circuit? Simple, rectifier diodes, at a wallet busting (not) price of about .75 cents apiece from my local Radio Shack.
Before I actually terminal crimp the diodes into the circuit, gotta make certain they are going to do the job. Connect diodes to brn/blu module ground wire, then connect the diodes to the ground wires from switch, window now goes up and down. Excellent! Who's ur daddy now! Go willie, go willie! :drinkup
Now that I know it works, connect the diodes to wires with butt terminals and rap it up, fit the door panel.
Peace and harmony with momma has be restored.