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Drivers door wiring

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Right i just pulled my drivers door apart to see what's going on with the door lock.

 

The lock works manually with the key but not with the central locking ether on the fob or the button beside the leccy windows.

 

The drivers wing mirror will not adjust ether.

 

The puddle light, all electric window switches, speaker and tweeter and the imobeliser L.E.D. all have power and work.

 

Iv checked the wiring for any split or broken wires all are good except all the medium and thin browns coming from the door are taped together and not connected to anything on the car side as are the thin brown/yellow wires. there is also two thin grey/blue wire coming from the door that are taped to 1 grey/blue wire on the car side.

 

All are taped using black duck tape so im assuming not standard.

 

But this would have been like this before the door lock stopped working.

 

Any ideas were I should look now?

 

Here a pic of the wiring so you understand the tapped wires. I removed the tape from the brown to check for any corrosion. 

post-75160-0-84836600-1373321915_thumb.jpg

Im no sparky, but im pretty sure they should all be serving some function..

 

Everything worked even with it all bodged together like that?

Do/did the window switches work?

Id follow the wires back through the car to see where they are going,

to see if theyve been cut out elsewhere.

Any chance a previous owner replaced the door loom and left bits of the original behind?

  • Author

Ever thing worked for about a year the over night it somehow died. couldn't unlock the drivers door in the morning for work.

 

All the window switches work as well as the locking switch just not on the drivers door. 

 

Iv had most of the dash out of the car this morning and cant find any other cut wires or anything.

 

The door had been apart before as the foam cover thing had been cut and taped back together. But i don't think the harness had been removed it looks to tidy and no clips were broken. Whoever cut and joined them wires done it with the loom on the car.

Just a few points:

 

I am confused by the photo. How come the wires loop around the hinge instead of going through the plastic tube? Did you move them to be able to see better?

 

Brown wires are 0 Volts wires to be connected to a ground terminal. Yours are connected to each other but floating free. Have you tried connecting them to chassis? Possible that one of these brown wires goes to a ground terminal post in which case make sure that all the browns really are making to each other.

 

The red and brown wire is the 12 V feed from fuse 10. Follow this wire behind the door plastic cover and it should go to a multi plug and socket. Unplug it and check for corrosion on the connector's pins. Many reports of water corrosion destroying the pins.

 

The grey/blue wires I believe are the lighting supply wires to the switches. Check that they light up when the main lighting switch is on. Sometimes the loom wires get cut or break from flexing where they go between car and door. The join in these wires may be a previous repair from this cause.

 

Black duct tape is not standard so someone has been there before you so may have bodged a previous fix of a corrosion problem.

 

I hope this helps you dig a bit deeper to find the cause.

  • Author

Thanks guys. All is fixed and well now. There was a corroded pin in the big plug for the window. it was the bottom one in the middle row. Yellow with a thin red line. The pin had snapped of so i managed to solder a pin from an old stereo loom i had. We will see how long it holds for. when it does brake again all replace the window motor part that the broken pins are on.

 

Many thanks again.

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