 | Home > Td5 > td5 ecu immobilser has activated-panic! |
 
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| big steve Member Since: 24 Dec 2009 Location: hertfordshire Posts: 2456   
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i would check your battery or even alternator 2015 2.2 tdci hardtop xs
3.2 conversion DONE 238bhp and 707nm torque and thats just the start ;-P hybrid turbo in build -done ready to fit ashcroft atb in transfer box 6 speed auto in build |
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3rd Jul 2014 10:51pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610 
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"Don't panic Mr Mannering!" 
Fundamentally I think therein lies your problem. Where's the other 8 volts plus gone? Big Steve's suggestion is a good starting point!  If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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4th Jul 2014 1:46am |
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| achuakh Member Since: 12 Apr 2012 Location: Singapore Posts: 158  
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even if the immob is set to off and the alarm is disabled, there's still some handshake between the ECU and the 10AS.
There's still the code and if there's an attempt to swap ECU or 10AS it can suddenly make the 10AS say, hey, the code is wrong and then when you query it, it will say ECU is immob. Well, like you mentioned you have a nanocom so check there first, if it's really immob, if so, then make the 10AS learn the ECU again and it should be well. From the land of the most expensive land rover defenders on planet earth. At �125k for a XS 110 csw and you get to own it only for 10yrs! Please find me a good reason to stay on this island. |
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5th Jul 2014 7:56am |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
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if the alternator is faulty it can put the ignition light on very dim even when ignition off and key removed .
normally when the alternator does this there is a short inside that put light on dim and flattens battery |
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5th Jul 2014 8:03am |
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| worzel Member Since: 02 Apr 2014 Location: canterbury Posts: 8 
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thanks for the advice so far, batteries are all fine think alternators okay but will check, the defender is a standard hardtop and didn't come with and thrills,.
Is the 10AS a box behind the dashboard tt i've been reading about and if so do all defenders come with them regardless and as achuakh says it talks to the ecu, could I have some how dislodged a cable or something when I was rooting around with the stereo cables? Would like to check it with Nanocom but it stopped getting enough power up the cable the morning the rest went wrong. Still very confused. |
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5th Jul 2014 12:43pm |
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| Clive Member Since: 21 Mar 2014 Location: Littleborough Posts: 467 
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The 10AS is indeed the green box behind the dash/speedo panel, easy enough to remove the panel with 4 screws, one in each corner, the 10AS is a bit more fiddly due to limited access to the securing screws, to be honest though, you shouldn't really need to go there.
I wouldn't have thought it likely that disturbing the stereo wiring would worry it, the wiring to the 10AS connectors is generally pretty secure. When you say "the battery is OK" have you had a voltmeter on it? does the car still start, or at least turn over at a reasonable speed. One other point, when using the Nanocom Evo, you should always disconnect the OBD connector first, (the one on the car,) never undo the 15 pin connector between the NC and cable while powered up, I believe this can cause serious issues with the NC where it will need returning to BBS. |
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5th Jul 2014 1:00pm |
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| worzel Member Since: 02 Apr 2014 Location: canterbury Posts: 8
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cheers Clive, already aware of the Nanocom unplugging and been careful to follow procedure.
The car doesn't start at all can hear fuel pump and all lights come on as expected but then the red engine light comes on and as I turn the key further the power drops out ( have volt meter on dash) The car battery is reading 12.1volts. Seems funny that it happened directly after taking stereo out, maybe just bad timing and I'm barking up the wrong tree? |
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5th Jul 2014 1:17pm |
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| Clive Member Since: 21 Mar 2014 Location: Littleborough Posts: 467
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Does seem odd, It would appear there's something draining the battery, you need to disconnect it and get it on a decent charger, once serviceable you need to get a current meter on there to identify the drain, it could of course be the alternator given up the ghost
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5th Jul 2014 2:31pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Sounds to me the immobiliser is doing exactly what it's supposed to. Know anyone in your area with another Nanocom that may be able to confirm? If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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5th Jul 2014 3:28pm |
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| Porny Site Sponsor Member Since: 31 Aug 2009 Location: Sutton Coldfield - West Midlands Posts: 809 
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Have you fitted new speakers as well as a new stereo?
Might sound a daft question but magnetic interference does some funny things to a 10as.... If the magnet of the new speaker is too close it can cause the vehicle to immobilise.... have had this issue on a customers Td5. IRB The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers. www.IRBdevelopments.com www.facebook.com/irbdevelopments www.integrated316.com www.facebook.com/integrated316 |
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5th Jul 2014 4:16pm |
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| worzel Member Since: 02 Apr 2014 Location: canterbury Posts: 8
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That's interesting Porny, yes the speakers are new but have run with them for a couple of months now on the old stereo and also they are in the same location as the original defender speakers what was the issue you had exactly?
Unfortunately I cant get another nancom to plug in as even mine wont read the ecu due to the power lost on that cable. Everything else in the cab is fine all 12 volts. might have to give it over to the expensive people see what they make of it. |
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5th Jul 2014 5:27pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Excuse my ignorance but I have absolutely no experience with a Nanocom but am an electrician. With the Puma diagnostics they are connected to the OBDII port. There is a single 12V feed to this port that comes off the battery and is protected by a fuse there are obviously earths, databus lines etc. It is from this supply my Puma diagnostic derives it's supply.
You mention "power lost to that cable." Surely if you go back to basics and cure the loss of power to "that cable" there is a strong possibility the Nanocom would burst into life and hopefully give an indication where your issues lie? Concentrate your efforts into that. What would happen if you 'jury rigged' (second time I've used that term today) an alternative 12V supply to "that cable" or the Nanocom 12V pin/socket and then connected the Nanocom? If you go through life with your head in the sand....all people will see is an ar5e!! Treat every day as if it is your last....one day you will be right!! |
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5th Jul 2014 5:50pm |
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| Clive Member Since: 21 Mar 2014 Location: Littleborough Posts: 467
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I've just been looking at the MY2002 schematics and there is a 5A fuse, Fuse 30, in the "Fuse Box Satellite (P109)" that feeds the 12V supply to both the Diagnostic socket and the Radio.
I'm not 100% sure where that particular fusebox is but I think it's the one next to the engine ECU under the drivers seat. By the way Worzel, I've got a Nanocom Evo if you need to double check anything and I'm not so far away from you. |
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5th Jul 2014 6:09pm |
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| K9F Member Since: 12 Nov 2009 Location: Bournemouth Posts: 9610
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Clive I think you're onto something here!
You've probably dislodged a supply line or blown the fuse. If you go through life with your head in the sand....all people will see is an ar5e!!
Treat every day as if it is your last....one day you will be right!! |
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5th Jul 2014 6:16pm |
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