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The mkiv Supra Owners Club

part 2 of the central locking shenanigans


ulysees

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Had a look this morning nd found this wire thats the same colour as the burnt one in drivers footwell could this be it as its in the same loom as were the burnt one goes into? how can i test to see if t is?

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the middle one of the three, green orange with pink spots

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Is one of the wires that goes into the door lock solenoid in the drivers door the same colour ? Look at the solenoid and see. If it is thats one step further forward as you will know for sure that the wire thats split into 3 in your last picture does actually control the door lock. The only way you are going to know for sure is to actually look at the door motor and see what colour the wire is, something which I am not sure you have done yet ?

 

If it is I would then trace this wire back from the door lock motor all the way to where it plugs into the drivers footwell, just in case where the plug with the melted wire in has different colours coming out of the back of it than goes into it, Id like to think that one of those 3 wires is the same colour from where you are holding it all the way to the door lock but you never know.

 

The fact that its one wire split into 3 would make me also check what colour the one in the passenger door that goes to the solenoid is as well. I am thinking perhaps that the central locking, which as far as I know only works from the drivers door might have an extra wire on the drivers door lock, possibly the same colour as one of the ones that splits into 3, so that when you lock the drivers door with the key a contact is made from that to the control unit to some sort of change over relay which then sends a current or earths it for a second down the other 2 wires to lock the doors.

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Right i found were the burnt wire stops burning, its just up in the dash about two feet from were it starts at the fuse box, it joins in to one wire along side another(2into1) so im gunna replace the knackered one and try it.

I did take door card off again tody and checked all wires and plugs and gave them a squirt of wd40 all seems fine in both doors.

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Did you have any luck once you replaced the wire mate? I took my door trims and most of the dash off today and looked at my wires, they look fine.

I'm thinking of changing the central locking unit and then if I get no joy using a blowtorch on the car as I'm reaching the end of my patience....

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if I get no joy using a blowtorch on the car as I'm reaching the end of my patience....

lol.. No mate i changed the wire and it made no difference to the locking so no sure what that wire does but at leased its replaced now and cant short out on anything.

The sparky's coming to me again tomorrow for another go at it, ill keep you posted on the outcome

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The sparky came today and you wouldnt believe it but its started working on him again within 2 mins of him being there,but it didnt work for me at all so he didnt charge me, ill be back again no doubt he said. it even works with the red box plugged in now:wtf::banghead:

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All is still ok and working today, and still on the old red box. BUT the button on the door panel only locks not unlock hmmmmm maybe theres the problem, in the button?

if mine stays ok then you can have the blue box from me if you like and try that in yours Gaz.

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Not sure if this will help at all but I had the same problem around this time last year. I did a search on here and quite a number of people have your or our problem. From memory mine and a few others central locking starts to play up when the temperature outside drops to around freezing?????

 

ps so you will be fine in the summer :o)

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All is still ok and working today, and still on the old red box. BUT the button on the door panel only locks not unlock hmmmmm maybe theres the problem, in the button?

if mine stays ok then you can have the blue box from me if you like and try that in yours Gaz.

 

it could be a problem in the button switch relay.... mine is still playing up, i have just paid keron for the box mate, along with a few other bits, thanks for the offer though, i really appreciate that. once the other unit arrives i will be taking both door cards off and all the trim glove boxes etc, hopefully i will stumble across the problem, otherwise its the sparky for me!

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