Thread: D2 td5 fuse blowing issue

It's known that the transmission harness will chafe where it crosses over the top of the transmission tunnel . More precisely as it turns towards the transmission from the top of the tunnel. There is a steel clamp there which wears through the outer insulation and two wires can lose their insulation and touch at times. ( or just on the sharp corner of the trans) There was a post on here a few years ago where it showed the loom unwrapped and the bare wires.
It's hard to see unless you remove the console and the console top by drilling out 14? rivets and there it is. I added some corrugated loom cover to mine.
Regards PhilipA

Hi, i really doubt that the transmission harness would blow any fuse as it's not directly connected to the fusebox. I'd replace the interior fusebox first if i was you cos they commonly suffer by corrosion inside which can cause a huge variety of symptoms. F22 is for the RH main beam it has nothing to do with the transmission nor those fuses from the engine bay, the only one which is connected to the autobox ECU is F24 but this one is also connected to the alternator so when it blows the M+S light are coming on due to low voltage. I suspect some short circuit within the interior fusebox hence it blows those from te engine bay too. If it's not that the vehicle's main harness which contains the fusebox's connectors is more suspect than anything else. You should rule out that fusebox before you go further, it's plug and play, important is to be from same modell(non facelift in your case), to disconnect the battery negative lead before the swap then after reconnection turn ignition on 2 and leave it so 5 minutes without doing anythig else. Good luck, you'll need it cos it's a very strange fault as there is not much connection between those blowing fuses.

Thanks Philip. I hadn't considered the inaccessible bit and had only tackled the area near the bolt on bracket. Time to pull it out and properly inspect it

cheers
Squanderer

Thanks very much Sierraferry; an interesting possible solution. In terms of the M & S lights coming on, this is always the first symptom and the car always goes into limp mode (sometimes with no blown fuse that I am aware of), so I guess the query there is whether the fact of the F24 fuse blowing would also trigger limp mode, or just the M & S lights showing?

I have looked into 10p/1999 model suitable/fuse boxes; it seems they don't make them any more so I will have to go second hand. Hopefully with a red fuse puller (I managed to lose mine)

I know from reading posts on this forum that there are about 18 reasons for the S & M lights to come on; I may have found the 19th....

cheers
Squanderer