2002 Ford Taurus power windows

Tiny
WILF
  • MEMBER
  • 2002 FORD TAURUS
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
Can only get 5.5 volts to window motors instead of 12 volts
Wednesday, March 11th, 2009 AT 9:32 PM

14 Replies

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
I need some info to better assist you ok. So first what model of taurus ei: lx se and such. Now what window is having the problem or is it all of them? Have you had a scanner hooked up to the GEM module to see if there is any codes (this is a special scanner)? Get back to me with what you know and we will go from there.
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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None of the windows will work &the power mirrows will not work. The Model is SE I have replaced the power windows relay with no luck I have not put a scanner on the car because of the cost
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
RACEFAN966
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Ok do you have a digital multi meter? I am thinking that sense the mirrors are not working either that you may have a GEM module problem. Now is there anything else that is acting up light the lighting or such? Get back to me and we will test the module. A scan does no good unless the check engine light is on. If you ever do need a scan call around to your local parts stores as some do free scans.
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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The lights are okay. I did get 6 volts to the window motor with the ignition key off
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
RACEFAN966
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Ok first we need to make sure a couple of fuses are good ok. Fuse number 26 this is for you mirrors and fuse number 10 that is you power window circuit fuse and fuse number 11. Fuse 26 is also shared with the power windows and mirrors. Get back to me with what you find there and we will go from that point ok.
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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The only fuse panel that have fuses with the numbers 10 11 26 is the one beside the battery & 26 is the only one to have a fuse in it 10 & 11 are blank & 26 is okay. The panel under the dash does not numbers on it The manual identfys these fuses by what they are for but none of them are for the power windows or power mirrows
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
RACEFAN966
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Ok lets keep to one problem at a time here. Now at the top of the fuse panel there is a relay on the right top corner (C2051). That is the one touch relay. We will need to see if that is good. Ok first you will need to remove the relay and then check for voltage between term 1 of the fuse box and ground (a pic of the relay for the numbers of the connector is included) key on engine off. If there is voltage then there is a short in the fuse box that needs fixed. If no voltage then check for voltage at term 2 of the fuse box and ground. If no voltage then there is a short in the light blue wire with the black stripe. If all that is good then check for voltage between term 2 and 5 of the fuse box and if voltage is better then 10 volts then we need to check the drivers door switch if it is less then 10 volts then then there is an open circuit. Get back to me with what you find and we will go from there.
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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I am getting 3.5 volts to term. #1 I took off the plug on the side of the fuse panel that had the light blue with the black stripe & got the same 3.5 volts how volts should be on terminal # 1
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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I ask you what the voltage should be but I found out it should be at least 11.5 to terminal # 1. Now I need to know if the 3 blocks on the side feed the fuse panel & if it does can I get attach a new 12volt supply to the light blue with black stripe
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
RACEFAN966
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Ok sorry I didn't tell you what the voltage should be, I do that because a lot of people will tell you what it should be as if they have already checked it instead of giving you the truth so you can actually help. I see that you are not one of those that do that so to the next step.
I need you to pull fuse number 16 it should be 15 amp fuse. This fuse is located on the fuse panel inside the car. Then with the fuse out have you multi meter handy and turn key on engine off and make sure that you have at least 10 volts or more to one side of where the fuse came out of ok.
Now if that is good then you can turn key off and replace the fuse and now locate the gem module behind or near that fuse box. It will have a 14 pin connector and be black and plastic.
Now disconnect it and check for voltage between ground and term 4 (the red wire with white stripe) with key on engine off it should be 10 volts or more. If less then 10 volts then you need to fix that red and white wire as it has a break in it. If all is good there then go to the next step.
Now turn the key off and check resistance between ground and term six (black wire with light green stripe), if less then 5 ohms then we need to look into the module and see if it is bad as it then it probably will be. If more then 5 ohms then that wire has a break and that needs to be fixed. Get back to me with what you find and we will go from there.
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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Can you tell me the color wire that feeds the number one post on the relay for the windows
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
RACEFAN966
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Ok there are three relays that help with the windows there is the one touch relay this is the one that controls the auto down mode. Then there is the battery saver relay and the accessory relay.
Now the one touch relay number one comes from the gem module (does not give me the color).
The battery saver relay comes directly from fuse number 26 (again doesn't show color).
The accessory relay comes directly from fuse 10 and again doesn't show color. I hope this will help get back to me with what you find.
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
WILF
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I found the problem with my windows the 12 volts goes to the door first then to the relay on the GEM module for its 12 volts it needs. I found 2 broken wires in the wireway between door & body 1 black & 1 blue with black strip I also found out that the relay on the top of GEM module only controls the driver door window the other 3 doors will work with the module taken out of module. Maybe this will help in the future THANKS for your help
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Tuesday, June 30th, 2020 AT 5:53 PM
Tiny
RACEFAN966
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Great glad it works again. That is the problem with wiring especially when the car isn't infront of you it takes a bit more to get to the problem at times. Thanks for the update and for staying with me on the tests. Thanks for your support too. If there is anymore I can do for you just ask.
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Tuesday, June 30th, 2020 AT 5:53 PM

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