Les Henson Posted May 6, 2007 Share Posted May 6, 2007 I went to a broken down 300TDi CSW the other day - there was no live supply to the fuel cut-off switch on the inj pump.I converted it to mechanical start and stall for now. I checked a bit further this morning, thinking it might be the ignition switch, but the live supply enters and leaves the switch as it's supposed to. So the supply is being interrupted between the ignition and the switch. Can anyone tell me the route the wiring takes (and the colours if poss), between the ignition and the switch please, or if this is a known problem? Les. Quote Link to comment Share on other sites More sharing options...
will_warne Posted May 6, 2007 Share Posted May 6, 2007 I went to a broken down 300TDi CSW the other day - there was no live supply to the fuel cut-off switch on the inj pump.I converted it to mechanical start and stall for now. I checked a bit further this morning, thinking it might be the ignition switch, but the live supply enters and leaves the switch as it's supposed to. So the supply is being interrupted between the ignition and the switch. Can anyone tell me the route the wiring takes (and the colours if poss), between the ignition and the switch please, or if this is a known problem?Les. Les, is the solinoid itself OK? I've heard of them failing before. IIRC my feed ('94 300tdi CSW) ran out of the dash and down the bulkhead along side the fuse box before heading into the engine compartment. I can't remember the colour, though. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted May 6, 2007 Author Share Posted May 6, 2007 The problem is not the solenoid. The wire to it is black and is dead with the ignition on. No black wire from the back of the ignition switch, so it goes elsewhere first. Les. Quote Link to comment Share on other sites More sharing options...
western Posted May 6, 2007 Share Posted May 6, 2007 Might be a duff start relay in fuse box [brown & red/white wires] or if immobiliser is fitted it might be that causing the porblem. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted May 6, 2007 Author Share Posted May 6, 2007 Would the rest of the electrics - including the starter motor still work in that case? There is the factory fitted immobilser, and the alarm does go off if you open the bonnet with it activated. Les. Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted May 6, 2007 Share Posted May 6, 2007 Would the rest of the electrics - including the starter motor still work in that case? There is the factory fitted immobilser, and the alarm does go off if you open the bonnet with it activated. Les. more than likely the spider immobiliser unit then Les, it's located in a riveted box in the battery compartment. It contains 2 relays, one for the FIP solenoid and one for the starter, either a dry joint or the board is toast. If it's toast, you can use AMR4956 which is a by-pass plug for the spider unit, it just plugs into the end of the loom (but then obviously you lose the immobilisation part of the alarm) If you whip it out, give me a shout, i'll take the lid off of it and have a look. you can buy a "better" unit to install instead of the spider, supposed to give more security: here or bogmonsters tech on how to fix a discovery spider (same unit, just in a different place) Quote Link to comment Share on other sites More sharing options...
Nigel H Posted May 6, 2007 Share Posted May 6, 2007 Les - I had a similar problem on my 90, turned out to be a dry solder joint in the spider box. N. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted May 6, 2007 Author Share Posted May 6, 2007 Thanks for that everyone. Jim, I'll whip it out for you Les. Quote Link to comment Share on other sites More sharing options...
Guest dew110CSW Posted May 6, 2007 Share Posted May 6, 2007 Jim, I'll whip it out for you Ooooh Errrrr Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted May 6, 2007 Share Posted May 6, 2007 Thanks for that everyone. Jim, I'll whip it out for you Les. NOOOOOOOOOOO /Running for the door/ Quote Link to comment Share on other sites More sharing options...
Les Henson Posted May 7, 2007 Author Share Posted May 7, 2007 Ok, I looked inside the battery box today and there's a black box with a squillion wires going into it - held onto the panel by 4 x M6 screws, and then 6 x blind rivets holding the box together. After some minor cursing and almost surgical use of a hammer and punch, I got the thing apart. Only one unit in there, and the motor won't start without it plugged in. There's nothing that I can see wrong with, but then I'm not entirely sure what to look for. Had to re-fit it for now as they need to use the truck. Jim - I can arrange for it to be here for a day if you still think you might be able to check if it's busted ot not? Piccys for you alarm porn people. Les. Quote Link to comment Share on other sites More sharing options...
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