2G Window switch electrical problem

[DSM_Kola]

Hello all,

I need some help figuring out what is wrong with my driver door harness and I need some guidance diagnosing it.

So the problem I ran into was that when I plugged in the window switch it went up in smoke as soon as I turned the key on. I quickly shut it off and unplugged it. I have attached some pictures with the wire that melted, it was a black wire. I believe the melted wire would be pin 7 on connector A if that helps. It melted all the way to a section where 3 black wires splice together. I just wanted to note before the window switch was plugged in when the key was on it never had this problem.

So if anyone has any ideas what might be wrong and how I would go about figuring this out I would appreciate it! Also is there anything I should know when fixing something like this?

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[chrysler kid]

Without more context into the car’s wiring situation I’m assuming the black wire is a ground, and possibly somewhere down the door harness that wire is pinched or frayed causing a short which caused that wire to melt.

So trace that melted wire back through the door into the dash

 

[DSM_Kola]

Without more context into the car’s wiring situation I’m assuming the black wire is a ground, and possibly somewhere down the door harness that wire is pinched or frayed causing a short which caused that wire to melt.

So trace that melted wire back through the door into the dash

Understood, I will trace the wire and see if I can find anything under the dash, so far I have the harness out of the door and don't see anything obvious other then the melted wire. Would the point at which the wire stopped melting indicate anything? Before the wire left the door it was no longer melted.

 

[luv2rallye]

That black wire on pin 7 (connector is actually D-04) goes to ground and is the ground for the door lock actuator and door lock key cylinder switch. So you may have a short/pinch to +12v in one of those places/wires and all the current is going through the black wire burning it up.

 

[DSM_Kola]

That black wire on pin 7 (connector is actually D-04) goes to ground and is the ground for the door lock actuator and door lock key cylinder switch. So you may have a short/pinch to +12v in one of those places/wires and all the current is going through the black wire burning it up.

I see, thanks for that info. Would you happen to know which specific color wires or pins I should check. Or would I be able to just depin/delete that since I most likely wouldn’t use it, I just want my windows to work.

 

[luv2rallye]

Ok I just noticed according to the diagrams, that connector D-04 which appears to have all the color wires of the connector in your pictures, is on the passenger door and for that window. Which door are you working on and are the pics from?

 

[DSM_Kola]

Ok I just noticed according to the diagrams, that connector D-04 which appears to have all the color wires of the connector in your pictures, is on the passenger door and for that window. Which door are you working on and are the pics from?

Interesting, I’m working on the driver side door, there is a chance I mixed the two harnesses when I started putting the car back together. Would that be causing my problem?

 

[luv2rallye]

Definitely, they are different. The drivers side doesn't even have a 9 pin D-04 connector. It has an identical 9 pin D-09 connector with different color wires that go to different places.

 

[chrysler kid]

Understood, I will trace the wire and see if I can find anything under the dash, so far I have the harness out of the door and don't see anything obvious other then the melted wire. Would the point at which the wire stopped melting indicate anything? Before the wire left the door it was no longer melted.

Technically you would use a volt meter to measure resistance of the wire to determine at what point the short occured at

However it sounds like you have a shell that you put a new harness into.

What is the depth of this project? Is it a shell of a car using a new harness? Was it a roller you are putting back together? Or were you just replacing a speaker on the door and after reinstalling everything had this problem?

 

[DSM_Kola]

Definitely, they are different. The drivers side doesn't even have a 9 pin D-04 connector. It has an identical 9 pin D-09 connector with different color wires that go to different places.

Gotcha I did check the other side now and I found a part number on the harness and tried to determine if it was meant for the driver side but could not find anything stating which side it was for. I also tried to check the wire diagram, but was having a hard time figuring what the colors where for the wires on connector D-09. So if you could please help me check, I would appreciate that! I have attached a picture of the “passenger” side connector and PN.

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Technically you would use a volt meter to measure resistance of the wire to determine at what point the short occured at

However it sounds like you have a shell that you put a new harness into.

What is the depth of this project? Is it a shell of a car using a new harness? Was it a roller you are putting back together? Or were you just replacing a speaker on the door and after reinstalling everything had this problem?

I see I have never had to do that before so if it turns out not to be the harness and to be a short I will make sure to do that.

As for the depth of this project this car is something I have been working on over 5+ years I did take pretty much everything apart and rebuild everything myself. Harness wise I got an ohm engine and fuse box harness. The chassis harness I just went through, got rid of things I knew I would not need mainly based on connectors in the wire diagram then I reloomed it. I did not change the door harnesses. So far everything else works except the windows, just got it back from the dyno, and then I ran into this issue after that.

 

[luv2rallye]

You definitely have the 2 door harnesses swapped. The connector in your picture above is D-09 which is for the drivers side (check the wires colors against the diagrams below). Here's the wiring (and D-04 right side): connector

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Plus googling MB942389 (in your passenger picture) shows it's the harness for the driver's side.

 

[DSM_Kola]

You definitely have the 2 door harnesses swapped. The connector in your picture above is D-09 which is for the drivers side (check the wires colors against the diagrams below). Here's the wiring (and D-04 right side): connector

Plus googling MB942389 (in your passenger picture) shows it's the harness for the driver's side.

I did try to goggle the PN it kept saying “front door” or FR door. Overall a noob mistake, but nonetheless thanks so much for the help!! I really appreciate it. I’m going to get those swapped today and fix the wire. One last question though would be do you think there would be anything else that might have been damaged or should check or should I be good after the swap and fix?

 

[chrysler kid]

I did try to goggle the PN it kept saying “front door” or FR door. Overall a noob mistake, but nonetheless thanks so much for the help!! I really appreciate it. I’m going to get those swapped today and fix the wire. One last question though would be do you think there would be anything else that might have been damaged or should check or should I be good after the swap and fix?

It should have popped the fuse before it melted the wire, so check to make sure the fuse is good. You should also replace the melted wire as far back as you can trace it

 

[DSM_Kola]

It should have popped the fuse before it melted the wire, so check to make sure the fuse is good. You should also replace the melted wire as far back as you can trace it

Sounds good I will get that done. Thanks for the help!

 

[DSM_Kola]

Just an update I did inspect everything and make sure that everything was good, then I got it all loomed back up. Plugged everything back in and it works now no problems! So it was just the wrong harness, thanks for the help I do not think I would have figured that out without it!

 

[luv2rallye]

It's good you posted your issue. There are a LOT of experts and guys with good info/experience on here.